TP-Link TL-SG5412F manuale d’uso

TL-SG5428 24-Port Gigabit L2 Managed Switch with 4 SFP Slot s TL-SG5412F 12-Port Gigabit SFP L2 Managed Switch with 4 Combo 1000BASE-T Port s REV 2.1.2 1910010846[...]

COPYRIGHT & TRADEMARKS S pecifications ar e subject to change without notice. is a registered trademark of TP-LINK TECHNOLOGIES CO., L TD. Other brands and product names are trademarks or registered trademarks of t heir respective holders. No part of the specificatio ns ma y be reproduced in any form or by any means or used to make any derivati[...]

II Safety Information  When product has power button, the power butto n is one of the way to shu t off the product; When there is no power button, the only way to co mpletely shut off power is to disconnect the product or the power adapter from the power source.  Don’t disassemble the product, or make repairs yourself. Y ou run the risk of [...]

CONTENTS Package C ontent s ............................................................................................................... ........... 1 Chapter 1 About this Guide........................................................................................................... 2 1.1 Intended Re aders ......................................[...]

5.1.1 Port C onfig ....................................................................................................... 31 5.1.2 Port Mi rror ........................................................................................................ 32 5.1.3 Port Secu rity ............................................................................[...]

7.1.1 STP Conf ig....................................................................................................... 83 7.1.2 STP Sum mary .................................................................................................. 85 7.2 Port C onfig ........................................................................................[...]

9.3.3 OUI Conf ig ..................................................................................................... 129 Chapter 10 ACL .......................................................................................................................... 13 1 10.1 T ime-R ange .................................................................[...]

1 1.5.3 Radius Se rver ................................................................................................ 171 Chapter 12 SNMP ....................................................................................................................... 173 12.1 SNMP C onfig ....................................................................[...]

VI 15.1 System M onitor ......................................................................................................... 217 15.1.1 CPU Moni tor .................................................................................................. 217 15.1.2 Memory Mo nitor ......................................................................[...]

Package Content s The following items should be found in your box:  One JetStream L2 Managed switch  One power cord  One console cable  Two mounting brackets and other fittings  Installation Guide  Resource CD for TL-SG5428/TL-SG5412F switch, including:  This User Guide  Other Helpful Information Note: Make sure that the pac[...]

Chapter 1 About this Guide This User Guide contains information for setup and management of TL-SG5428/TL-SG5412F switch. Please read this guide carefully before operation. 1.1 Intended Readers This Guide is intended for network managers fam iliar with IT concepts and network terminologies. 1.2 Conventions In this Guide the following conventions are[...]

Chapter Introduction Chapter 4 System This module is used to co nfigure system properti es of the switch. Here mainly introduces:  System Info: Configure the description, system time and network parameters of the switch.  User Management: Configure t he user name and password for users to log on to the Web management page with a certain acces[...]

Chapter Introduction Chapter 8 Multicast This modul e is used to configure multic ast function of the switch. Here mainly introduces:  IGMP Snooping: Configure global pa rameters of IGMP Snooping function, port propertie s, VLAN and multicast VLAN.  Multicast IP: Configure multicast IP t able.  Multicast Filter: Configure multic ast filter[...]

Chapter Introduction Chapter 12 SNMP This module is used to configure SNMP function to provide a management frame to monitor and ma intain the network devices. Here mainly introduces:  SNMP Config: Configure global settings of SNMP function.  Notification: Configure notif ication function for the management station to monitor and process the [...]

Chapter 2 Introduction Thanks for choosing the TL-SG5428/TL-S G5412F JetStream L2 Manage d Switch! 2.1 Overview of the Switch TL-SG5428 and TL-SG5412F are Gigabit Ethernet switching products recently devel oped by TP-LINK. TL-SG5428 possesses 24 RJ45 ports and 4 SFP slots, while TL-SG5412F characterizing with 12 SFP slots and 4 RJ45 ports . The SFP[...]

+ Rate limitin g confines the traf fic flow a ccurately according to the preset value.  Security + Supports multiple industry standard user aut hentication methods such as 802.1x, RADIUS. + IP Source Guard prevent s IP spoofing att acks. + Dynamic ARP Inspection blocks ARP packet s from unauthorized hosts, preventing man-in-the-middle attacks. +[...]

Name Statu s Indication On A device is linked to the corresponding port and runni ng at 1000Mbps. 1000Mbps Off A 10/100Mbps device or no d evice is linked to the corresponding port. On A device is linked to the corresponding port and runni ng properly . Flashing Data is being transmitted or received. Link/Act Off No device is linked to the correspo[...]

 AC Po wer Socket: Connect the female connector of t he power cord here, and the male connector to the AC power outlet. Please make su re the voltage of the power supply meets the requirement of the input vo ltage (100-240V~ 50/60Hz 0.6A). Return to CONTENTS 9[...]

Chapter 3 Login to the Switch 3.1 Login 1) T o access the configurat ion utility , open a web-browser and type in the default address http://192.168.0.1 in the address field of the browser , then press the Enter key . Figure 3-1 W eb-browser Tips: T o log in to the switch, the IP address of your PC should be set in the same subnet addresses of the [...]

Figure 3-3 Main Setup-Menu Note: Clicking Apply can only make the new conf igurations effective before the switch is rebooted. If you want to keep the configur ations effective even the swit ch is rebooted, please click Save Config . Y ou are suggested to click Save Config before cutting off the power or rebooting the switch to avoid losing the new[...]

Chapter 4 System The System module is mainly for system confi guration of the switch, including four submenus: System Info , User Management, System T ools and Access Security . 4.1 System Info The System Info, mainly for basic proper ties configuration, can be implemented on System Summary , Device Description , Sy stem Ti me , Day light Saving Ti[...]

When the cursor moves on the port, the det ailed information of the port will be displayed. Figure 4-2 Port Information  Port Info Port: Displays the port number of the switch. Ty p e : Displays the type of the port. Rate: Displays the maximum trans mission rate of the port. Statu s: Displays the connection status of the po rt. Click a port to d[...]

Choose the menu System → System Info → Device Description to load the following p age. Figure 4-4 Device Descripti on The following entries are displayed on this screen:  Device Description Device Name: Enter the name of the switch. Device Location: Enter the location of the switch. System Cont act: Enter your contact information. 4.1.3 Syst[...]

Current T ime Source: Displays the current time source of the switch.  Time Config Manual: When this option is selected, you can set the date and time manually . Get Time from NTP Server: When this option is selected, y ou can configure the time zone and the IP Address for the NTP Server . The switch will get UTC automatically if it has connecte[...]

 DST Config DST St atus: Enable or Disable DST . Predefined Mode: Select a predefined DST configuration:  USA: Second Sunday in Marc h, 02:00 ~ First Sunday in November , 02:00.  Australia: Fir st Sunday in October , 02:00 ~ First Sunday in April, 03:00.  Europe: Last Sunday in March, 01:00 ~ Last Sunday in October , 01:00.  New Zeal[...]

Figure 4-7 System IP The following entries are displayed on this screen:  IP Config MAC Address: Displays MAC Address of the switch. IP Address Mode: Select the mode to obtain IP Address for the switch.  St atic IP: When this option is sele cted, you should enter IP Address, Subnet Mask and Default Gateway manually .  DHCP: When this optio[...]

4. If DHCP or BOOTP option is selected, the switch will get network parameters dynamically from the Internet, which means that IP address, subnet mask and default gateway can not be configured. 5. By default, the IP address is 192.168.0.1. 4.2 User Management User Management functions to configure the user name and password for users to log on to t[...]

The following entries are displayed on this screen:  User Info User Name: Create a name for users’ login. Access Level: Select the access level to login.  Admin: Admin can edit, modify and view all the settings of different functions.  Guest: Guest only can view the setti ngs without the right to edit and modify . User St atus: Select En[...]

Figure 4-10 Config Restore The following entries are displayed on this screen:  Config Restore Restore Config: Click the Restore Config button to restore the backup configuration file. It will take ef fe ct af ter the switch automatically reboots. Note: 1. It will take a few minutes to restore the c onfiguration. Please wait without any operatio[...]

Note: It will take a few minutes to backup the configuration. Pleas e wait without any operation. 4.3.3 Firmware Upgrade The switch system can be upgraded via the Web management p age. T o upgrade the system is to get more functions and be tter performance. Go to http://www .tp-link.com to download the updated firmware. Choose the menu System → S[...]

4.3.5 System Reset On this page you can reset the switch to the defaul t. All the settings will be cleared after the switch is reset. Choose the menu System → Sy stem T ools → System Reset to load the following page. Figure 4-14 System Reset Note: After the system is reset, the sw itch will be reset to the default an d all the settings will be [...]

Figure 4-15 Access Control The following entries are displayed on this screen:  Access Control Config Control Mode: Select the control mode for us ers to log on to the W eb management page.  Disable ： Disable the access control function.  IP-based: Select this option to limit the IP-range of the users for login.  MAC-based: Select thi[...]

 Access User Number Number Control: Select Enable/Disable the Number Control function. Admin Number: Enter the maximum number of the users logging on to the Web management page as Admin. Guest Number: Enter the maximum number of the users logging on to the Web management page as Guest. 4.4.2 SSL Config SSL (Secure Sockets Layer), a security prot[...]

The following entries are displayed on this screen:  Global Config SSL: Select Enable/Disable the SSL function on the switch.  Certificate Download Certificate File: Select the desired certificate to download to the switch. The certificate must be BASE64 encoded.  Key Download Key File: Select the desired SSL Key to downl oad to the switch[...]

Figure 4-17 SSH Config The following entries are displayed on this screen:  Global Config SSH: Select Enable/Disable SSH function. Protocol V1: Select Enable/Disable SSH V1 to be the supported protocol. Protocol V2: Select Enable/Disable SSH V2 to be the supported protocol. Idle Timeou t: S pecify the idle timeout time. The system will automatic[...]

Application Example 1 for SSH:  Network Requirements 1. Log on to the switch via password authentic ation using SSH and the SSH function is enabled on the switch. 2. PuTTY client sof tware is recommended.  Configuration Procedure 1. Open the software to log on to the interface of PuTTY . Enter the IP address of the switch into Host Name field[...]

Note: 1. The key len gth is in the range of 256 to 307 2 bits. 2. During the key generati on, randomly moving the mouse quickly can accelerate the key generation. 3. After the ke y is successfully generated, please save the pub lic key and private key to the computer . 2. On the W eb management page of the switch, download the public key file saved[...]

Note: 1. The key typ e should accord with the type of the key file. 2. The SSH key dow nloading can not be interrupted. 3. Download the private key file to SSH client sof tware. 3. After the public key and private key are dow nl oaded, please log on to the interface of PuTTY and enter the IP address for login. After successful authentication, pl ea[...]

30 Return to CONTENTS[...]

Chapter 5 Switching Switching module is used to conf igure the basic functi ons of the switch, in cluding four submenus: Port , LAG , T raffic Monitor and MAC Address . 5.1 Port The Port function, allowing you to configure the basic features fo r the port, is implemented on the Port Config , Port Mirror , Port Security , Port Isolation and Loopback[...]

St atu s: Allows you to Enable/Dis able the port. When Enable is selected, the port can forward the packet s normally . Speed and Duplex: Select the S peed and D uplex mode for the port. The device connected to the switch s hould be in the same S peed and Duplex mode with the switch. When “Auto” is selected, the S peed and Duplex mode will be d[...]

 Mirror Group List Group: Displays the mirror group number . Mirroring: Displays the mirroring port number . Mode: Displays the mirror mode. Mirrored Port: Displays the mirrored port s. Operation: Click Edit to configure the mirror group. Click Edit to display the following figure. Figure 5-3 Port Mirror Config The following entries are displaye[...]

 Mirrored Port Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select the desired port as a mirrored port. It is multi-optional. Port: Displays the port number . Ingress: Select Enable/Disable the Ingre ss feature. When the Ingress is enabled, the incoming packe ts receive[...]

Figure 5-4 Port Security The following entries are displayed on this screen:  Port Security Select: Select the desired port for Port Security configuration. It is multi-optional. Port: Displays the port number . Max Learned MAC: S pecify the maximum number of MAC addresses that can be learned on the port. Learned Num: Displays the number of MAC [...]

Note: 1. The Port Security function is disabled for the LAG port member . Only the port is removed from the LAG , will the Port Security function be available for the port. 2. The Port Security function is dis abled when the 802.1X function is enabled. 5.1.4 Port Isolation Port Isolation provides a method of restricting traffic flow to improve the [...]

5.1.5 Loopback Detection With loopback detection feature enabled, the swit ch can detect loops using loopback detection packet s. When a loop is detected, the switch will di splay an alert or further block the corresponding port according to the port configuration. Choose the menu Sw itch ing → Port → Loopback Detection to load the following pa[...]

Select: Select the desired port for loop ba ck detection configuration. It is multi-optional. Port: Displays the port number . Statu s: Enable or disable loopback det ection function for the port. Operation Mode: Select the operation mode when a Loopback is detected.  Alert : When a Loopback is detected, display an alert.  Port based: When a [...]

Tips: 1. Calculate the bandwidth for a LAG: If a LAG consists of th e four ports in the speed of 1000Mbps Full Duplex, the whole bandwidth of the LAG is up to 8000Mbps (2000Mbp s * 4) because the bandwidth of each member port is 2000Mbp s counting t he up-linked speed of 1000Mbps and the down-linked speed of 1000Mbps. 2. The traf fic load of the LA[...]

Operation: Allows you to view or modify the information for each LAG .  Edit: Click to modify the settings of the LAG .  Det ail: Click to get the information of the LAG . Click the Detail button for the det ailed information of your selected LAG . Figure 5-8 Det ail Information 5.2.2 S t atic LAG On this page, you can manually c onfigure the[...]

 LAG Config Group Number: Select a Group Number for the LAG . Description: Displays the description of LAG .  LAG T able Member Port: Select the p ort as the LAG member . Clearing all the ports o f the LAG will delete this LAG . Tips: 1. The LAG can be deleted by clearing its all member ports. 2. A port can only be added to a LAG . If a port [...]

Figure 5-10 LACP Config The following entries are displayed on this screen:  Global Config System Priority : S pecify the system priority for the switch. The system priority and MAC address constitute the system identification (ID). A lower system priority value indicates a higher system priority . When exchanging information between systems, t [...]

Port Priority : S pecify a Port Priority for the port. This value determines the priority of the port to be selected as the dynamic aggregation group member . The port with smaller Port Priority will be considered as the preferred one. If the two port pr iorities are equal; the port with smaller port number is preferred. Mode: S pecify LACP mode fo[...]

Refre sh Rate: Enter a value in seconds to specify the refresh interval.  T raffic Summary Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Port: Displays the port number . Packets Rx: Displays the number of p ackets received on the port. The erro r packet s are not counted in. Pac[...]

Auto Refre sh: Allows you to Enable/Disable refreshing the T raffic Summary automatically . Refresh Rate: Enter a value in seconds to specify the refresh interval.  St atistics Port: Enter a port number and click the Select button to view the traffic statistics of the corresponding port. Received: Displays the details of the packe ts received on[...]

update d by auto-learning. In the stable networks, th e static MAC address entries can facilitate the switch to reduce broadcast packets and enhance the efficiency of packets forwarding remarkably. The address filtering feature allo ws the switch to filter the undesired packets and forbid its forwarding so as to improve the network security. The ty[...]

VLAN ID: Enter the VLAN ID of your desired ent ry . Port: Select the corresponding port number of your desired entry . Ty p e : Select the type of your desired entry .  All: This option allows the address table to display all the address entries.  Stati c: This option allows the address table to display the st atic address entries only .  [...]

Figure 5-14 S tatic Address The following entries are displayed on this screen:  Create St atic Address MAC Address: Enter the static MAC Address to be bound. VLAN ID: Enter the corresponding VLAN ID of the MAC address. Port: Select a port from the pull-down list to be bound.  Search Option Search Option: Select a Search Option from the pull-[...]

Note: 1. If the corresponding po rt number of the MAC address is not co rrect, or the connected port (or the device) has been change d, the switch can not be forward the packet s correctly . Please reset the static address entry appropriately . 2. If the MAC address of a device has been added to the S tatic Address T able, connecting the device to [...]

 Search Option Search Option: Select a Search Option fr om the pull-down list and click the Search button to find your desired entry in the Dynamic Address T able.  MAC: Enter the MAC address of your desired entry .  VLAN ID: Enter the VLAN ID number of your desired entry .  Port: Enter the Port number of your desired entry .  LAG ID[...]

Figure 5-16 Filtering Address The following entries are displayed on this screen:  Create Filtering Address MAC Address: Enter the MAC Address to be filtered. VLAN ID: Enter the corresponding VLAN ID of the MAC address.  Search Option Search Option: Select a Search Option fr om the pull-down list and click the Search button to find your desir[...]

52 Return to CONTENTS[...]

Chapter 6 VLAN The traditional Ethernet is a data network comm unication technology basi ng on CSMA/CD (Ca rrier Sense Multiple Access/Collision Detect) vi a shared communication medium. Through the traditional Ethernet, the overfull hosts in LAN will result in serious collis ion, flooding broadcasts, poor performance or even break down of the Inte[...]

6.1 802.1Q VLAN VLAN tags in the packet s are necessary for the sw itch to identify packet s of different VLANs. The switch works at the data link layer in OSI model and it can identify the data link layer encapsulation of the packe t only , so you can add the VLAN tag field into the data link layer encapsulation for identification. In 1999, IEEE i[...]

 PVID PVID (Port Vlan ID) is the default VID of the port. When the switch receives an un-VLA N-tagged packet, it will add a VLAN tag to the packet according to the PVID of its rece ived port and forward the packet s. When creating VLANs, the PVID of each port, i ndicating the default VLAN to which the port belongs, is an important p arameter wit[...]

T o ensure the normal communication of the factory sw itch, the default VLAN of all ports is set to VLAN1. The following entries are displayed on this screen:  VLAN T able VLAN ID Select ： Click the Select button t o quick-select the corresponding entry based on the VLAN ID number you entered. Select ： Select the desired entry to del ete the[...]

 VLAN Config VLAN ID: Enter the ID number of VLAN. Description: Give a description to the VLAN for identification. Check: Click the Check button to check whether the VLAN ID you entered is valid or not.  VLAN Members Port Select: Click the Select button to quick-select the corresponding entry based on the port number you entered. Select: Sele[...]

The following entries are displayed on this screen:  VLAN Port Config Port Select: Click the Select button to quick-select the corresponding entry based on the port number you entered. Select: Select the desired port for confi guration. It is multi-optional. Port: Displays the port number . Link T ype: Select the Link T ype from t he pull-down l[...]

Configuration Procedure: Ste p Operation Description 1 Set the link type for port. Required. On the VLAN → 802.1Q VLAN → Port Config page, set the link type for the port basing on its connected device. 2 Create VLAN. Required. On the VLAN → 802.1Q VLAN → VLAN Config page, click the Create button to create a VLAN. Enter the VLAN ID and the d[...]

2. When receivi ng tagged packet, the switch will process it basing on t he 802.1Q VLAN. If the received port is the member of the VLAN to which the tagged packet belongs, the packet will be forwarded normally. Otherwise, the packet will be discarded. 3. If the Protocol VLAN is created, pleas e set its enabled port to be the member of corresponding[...]

Figure 6-8 Create and V iew Protocol T emplate The following entries are displayed on this screen:  Create Protocol T emplate Protocol Name: Give a name for the Protocol T emplate. Ether T ype: Enter the Ethernet protocol type field in the protocol template.  Protocol T emplate T able Select: Select the desired entry . It is multi-optional. P[...]

Configuration Procedure: Ste p Operation Description 1 Set the link type for port. Required. On the VLAN → 802.1Q VLAN → Port Config page, set the link type fo r the port basing on its connected device. 2 Create VLAN. Requir ed. On the VLAN → 802.1Q VLAN → VLAN Config page, click the Create button to create a VLAN. Enter the VLAN ID and the[...]

a port receives a p acket, this port will replace the TP ID value in the outer VLAN tag of this p acket with the user-defined value and then s end the packe t again. Thus, the VLAN-VPN packet s sent to the public network can be recognized by devices of other manufacturers. The position of the TPID field in an Ethernet packet is the same as t he pos[...]

Select the d esired port as the VPN Up-link por t. It’ s required to set the port connected to the operators’ backbone networks to be up-link port. 6.3.2 Port Enable On this page, you can enable the port for the VL AN VPN function. Only the port is enabled, can the configured VLAN VPN function take ef fect. Figure 6-1 1 Enable VLAN VPN for Port[...]

implementation of GARP. When GA RP is implemented on a port of device, the port is called GARP entity. The information exchange between GARP entities is completed by messages. GARP defines the messages into three types: Join, Leave and LeaveAll.  Join Message: When a GARP entity expects other switches to register certain attribute information of[...]

registration information includes not o nly the static registration in formation configured locally, but also the dynamic registration information, which is received from other switches. In this switch, only the port with TRUNK link ty pe can be set as the GVR P application entity to maintain the VLAN registration information. GVRP has the followin[...]

 Port Config Port Select: Click the Select button to quick-select the corresponding entry based on the port number you entered. Select: Select the desired port for confi guration. It is multi-optional. Port: Displays the port numbe r . Statu s: Enable/Disable the GVRP feature for the port. The port type should be set to TR UNK before enabling th[...]

6.5 Private VLAN Private VLANs, designed to save VLAN resour ces of uplink devices and decrease broadcast, are sets of VLAN p airs that share a common primary id entifier . T o guarantee user information security , the ease with which to manage and account traffi c for service providers, in campus network, service providers usually require that eac[...]

 Packets fro m different Secondary VLANs can be forwarded to the uplink device via promiscuous port and carry no corresponding Secondary VLAN information.  Packets from Primary VLANs can be sent to end users via host port and carry no Primary VLAN information. Private VLAN is designed to save VLAN resource by means of Port conf iguration sync[...]

Figure 6-13 Port PVID Allowed VLANs Port5 5 VLAN5 Port2 2 VLAN2 Port3 3 VLAN3 T able 6-4 Port settings before configuration synchroni zation Port PVID Allowed VLANs Port5 5 VLAN2, 3, 5 Port2 2 VLAN2, 5 Port3 3 VLAN2, 5 T able 6-5 Port settings after configuration synchro nization  MAC address duplication: After port configurati on synchronizatio[...]

mac_2 2 port 2 mac_3 3 port 3 T able 6-6 MAC address t able before duplication Destination MAC VLAN Egress Port mac_a 5 port 5 mac_a 2 port 5 mac_a 3 port 5 mac_2 2 port 2 mac_2 5 port 2 mac_3 3 port 3 mac_3 5 port 3 T able 6-7 MAC address t able after du plication  Packet forwarding in Private VLAN The Private VLAN packet forwarding process (he[...]

7) When the promiscuous port Port5 receives the response packet, it tags this packet a default VLAN ID 5 and learns the MAC address entry mac_a+VLAN5+Port5. 8) According to the MAC address duplication, this MAC addr ess entry is copied to VLAN 2 and VLAN 3, and the switch adds two more MAC address entries mac_a+VLAN2+Port5 and mac_a+VLAN3+Port5 to [...]

desired Priva te VLAN.  Secondary VLAN ID: Enter the Secondary VLAN ID number of the desired Private VLAN.  Private VLAN T able Select: Select the entry to delet e. It is multi-optional. Primary VLAN: Displays the Primary VLAN ID number of the Private VLAN. Secondary VLAN: Displays the Secondary VLAN ID number of the Private VLAN. Port: Displ[...]

2. A Promiscuous Port can only join to a Primary VLAN. 3. If you want to add a Promiscuous port to differ ent Private VLANs with the same Primary VLAN, you need to add the Promiscuous port to any one of these Private VLANs. Configuration Procedure: Ste p Operation Description 1 Create Private VLAN Required. On the VLAN → Private VLAN → PVLAN Co[...]

Ste p Operation Description 1 Configure the Link T ype of the ports Required. On VLAN → 802.1Q VLAN → Port Config page, configure the link type of Port 2, Port 3 and Port 4 as ACCESS, TRUNK and ACCESS respectively 2 Create VLAN10 Required. On VLAN → 802.1Q VLAN → VLAN Config page, create a VLAN with its VLAN ID as 10, owning Port 2 and Port[...]

 Network Diagram  Configuration Procedure  Configure Switch A Ste p Operation Description 1 Configure the Link T ype of the ports Required. On VLAN → 802.1Q VLAN → Port Config page, configure the link type of Port 1 1 and Port 13 as ACCESS, and configure the link type of Port 12 as GENERAL. 2 Create VLAN10 Required. On VLAN → 802.1Q [...]

Ste p Operation Description 5 Port Enable Required. On the VLAN → Protocol VLAN → Port Enable page, select and enable Port 3, Port 4 and Port 5 for Protocol VLAN feature. 6 Create Protocol VLAN 10 On VLAN → Protocol VLAN → Protocol VLAN page, create protocol VLAN 10 with Protocol as IP . 7 Create Protocol VLAN 20 On VLAN → Protocol VLAN ?[...]

Ste p Operation Description 1 Create Private VLANs Required. On the VLAN → Private VLAN → PVLAN Config page, Enter the Primary VLAN 6 and Secondary VLAN 2-3, and then click the Create button. 2 Add Promiscuous port to Private VLANs Required. On the VLAN → Private VLAN → Port Config page, configure the port type of Port3 and Port4 as Promisc[...]

Chapter 7 S p anning T ree STP (S panning T ree Protocol ), subject to IEEE 802.1 D standard, is to disbr anch a ring network in the Data Link layer in a local netwo rk. Devices running STP discover loops in the network and block ports by exchanging inf ormation, in that way , a ring net work can be di sbranched t o form a tree-topologi cal ring-fr[...]

Figure 7-1 Basic STP diagram  STP T imers Hello T ime: Hello T ime ranges from 1 to 10 seconds. It specifie s the interval to send BPDU packe ts. It is used to test the links. Max. Age: Max. Age ranges from 6 to 40 sec onds. It specifies the maximum time the switch can wait without receiving a BPDU before attempting to reconfigure. Forward Delay[...]

Ste p Operation 1 If the priority of the BPDU received on t he po rt is lower than that of the BPDU if of the port itself, the switch discards the BPDU and does not change the BPDU of the port. 2 If the priority of the BPDU is higher t han that of the BPDU of the port itself, the switch replaces the BPDU of the port with the received one and compar[...]

point-to-p oint link, it can transit to forw arding state af ter getting response from the downstream switch through handshake.  RSTP Ele ment s Edge Port: Indicates the port connected directly to terminals. P2P Link: Indicates the link between two switches direct ly connected. MSTP ( Multiple S panning T ree Protocol), co mp ati ble wit h both [...]

 Port St ates In an MSTP , ports can be in the following four states:  Forwarding: In this status the port can rece ive/forward data, receive/send BPDU p acket s as well as learn MAC address.  Learning: In this status the port can rece ive/send BPDU p ackets and learn MAC address.  Blocking: In this status the port can only receive BPDU[...]

Figure 7-4 STP Config The following entries are displayed on this screen:  Global Config STP: Select Enable/Disable STP f unction globally on the switch. V ersion: Select the desired STP version on the switch.  STP: S panning T ree Protocol.  RSTP: Rapid S p anning T ree Protocol.  MSTP: Multiple S p anning T ree Protocol.  Parameter[...]

Note: 1. The forward delay parameter and the network dia meter are correlated. A t oo small forward delay parameter may result in temporary loops. A too large forward delay may cause a network unable to resume the normal state in time. The default value is recommended. 2. An adequate hello time parameter can enable the switch to discover t he link [...]

Figure 7-5 STP Summary 7.2 Port Config On this page you can c onfigure the parameters of th e ports for CIST . Choose the menu Sp anning T ree → Port Config to load the following page. Figure 7-6 Port Config The following entries are displayed on this screen:  Port Config 86[...]

Port Select: C lick the Select button to quick-select the corresponding port based on the port number you entered. Select: Select the desired port for STP conf iguration. It is multi-optional. Port: Displays the port number of the switch. Statu s: Select Enable /Disable STP f unction for the desired port. Priority: Enter a value from 0 to 240 divis[...]

Note: 1. Configure the ports con nected directly to terminals as edge ports and enable the BPDU protection function as well. This not only enables these ports to transit to forwarding state rapidly but also secures your network. 2. All the links of ports in a LAG c an be configured as point-to-point links. 3. When the link of a port is configured a[...]

Figure 7-8 Instan ce Config The following entries are displayed on this screen:  Inst ance T able Inst ance ID Select: Click the Select button to quick-select the corresponding Instance ID based on the ID number you entered. Select: Select the desired Instance ID for c onfiguration. It is multi-optional. Inst ance: Displays Instance ID of th e s[...]

Note: In a network with both GVRP and MSTP enabled, GVRP packet s ar e forwarded along the CIST . If you want to broadcast packe ts of a specific VL AN through GVRP , please be sure to map the VLAN to the CIST when configuring the MSTP VLAN-ins tance mapping t able. For detailed introduction of GVRP , please refer to GVRP function page. 7.3.3 Inst [...]

Priority : Enter the priority of the port in the inst ance. It is an important criterion on determining if the port connected to this por t will be chosen as the root port. Path Cost: Path Cost is used to choose the path and calculate the path cost s of ports in an MST region. It is an important criterio n on determining the root port. The lower va[...]

 Loop Protect In a stable network, a switch mainta ins the st ates of ports b y receiving and processing BPDU packet s from the upstream switch. Ho wever , wh en link congestions or link failures occurred to the network, a down stream switch does not receive BP DU packet s for certain p eriod, which results in spanning trees being regenerated an[...]

With BPDU filter function enabled, a port does not receive or forwar d BPDUs, but it sends out its own BPDUs. Such a mechanism prevent s the swit ch from being attacked by BPDUs so as to guarantee generation the spanning trees correct. Choose the menu Sp anning T ree → STP Security → Port Protect to load the following p age. Figure 7-10 Port Pr[...]

7.4.2 TC Protect When TC Protect is enabled for the port on Port Protect page, the TC threshold and TC protect cycle need to be configured on this page. Choose the menu Sp anning T ree → STP Security → TC Protect to load the following page. Figure 7-1 1 TC Protect The following entries are displayed on this screen:  TC Protect TC Threshold: [...]

 Configuration Procedure  Configure Switch A: Ste p Operation Description 1 Configure ports On VLAN → 802.1Q VLAN page, configure the link type of the related ports as T runk, and add the ports to VLAN101-VLAN106. The detailed instructions can be found in the section 802.1Q VLAN . 2 Enable STP function On Sp anning T ree → STP Config → [...]

 Configure Switch C: Ste p Operation Description 1 Configure ports On VLAN → 802.1Q VLAN page, configure the link type of the related ports as T runk, and add the ports to VLAN101-VLAN106. The detailed instructions can be found in the section 802.1Q VLAN . 2 Enable STP function On Sp anning T ree → STP Config → STP Config page, enable STP [...]

 The configuration procedure for switch E and F is the same with that for switch D.  The topology diagram of the t w o inst ances af ter the topology is stable  For Instance 1 (VLAN 101, 103 and 105), the red pa ths in the following figure are connected links; the gray paths ar e the blocked links.  For Instance 2 (VLAN 102, 104 and 106[...]

Chapter 8 Multicast  Multicast Overview In the network, packet s are sent in three modes: unicast, broadcas t and multicast. In unicast, the source server sends separate copy information to each receiver . When a large number of users require this information, the serv er must send many pieces of info rmation with the same content to the users. [...]

 Multicast Address 1. Multicast IP Address: As specified by IANA (Internet Assigned Numbers Authority), Class D IP addresses are used as destination addresses of multic ast packets. The multicast IP addresses range from 224.0.0.0~239.255.255.255. The following table displays the range and description of several special multicast IP addresses. Mu[...]

 IGMP Snooping In the network, the hosts apply to the near router for joining (leavin g) a multicast group by sending IGMP (Internet Group Management Protocol) me ssages. When the up-str eam device forwards down the multicast data, the switch is responsible for sending them to the host s. IGM P Sn oop ing is a multicast contr ol mechanism, which[...]

3. IGMP Leave Message The host, running IGMPv1, does not send IGMP l eave message when leaving a multicast group, as a result, the switch can not get the leave information of the host momentarily . However , after leaving the multicast group, the host does not send IGMP report message any more, so the switch will remove the port from the correspond[...]

Figure 8-4 Basic Config The following entries are displayed on this screen:  Global Config IGMP Snooping: Select Enable/Disable IGMP S nooping function globally on the switch. Unknown Multicast: Select the operation for the swit ch to process unknown multicast, Forward or Discard.  IGMP Snooping S t atus Description: Displays IGMP Snooping st[...]

Figure 8-5 Port Config The following entries are displayed on this screen:  Port Config Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select the desired port for IGMP Snooping feature configuration. It is multi-optional. Port: Displays the port of the switch. IGMP Snoopi[...]

Figure 8-6 VLAN Config The following entries are displayed on this screen:  VLAN Config VLAN ID: Enter the VLAN ID to e nable IGMP Snooping for the desir ed VLAN. Router Port Time: S pecify the aging time of the router port. Within this time, if the switch doesn’t receive IGMP query message from the router port, it will consider this port is n[...]

Leave T ime: Displays the leave time of the VLAN. Router Port s: Displays the router port of the VLAN. Note: The settings here will be invalid when multicast VLAN is enabled. Configuration procedure: Ste p Operation Description 1 Enable IGMP Snooping function Required. Enable IGMP Snooping globally on the switch and for the port on Multicast → IG[...]

Figure 8-7 Multicast VLAN The following entries are displayed on this screen:  Multicast VLAN Multicast VLAN: Select Enable/Disable Multicast VLAN feature. VLAN ID: Enter the VLAN ID of the multicas t VLAN. Router Port Time: S pecify the aging time of the router port. Within this time, if the switch doesn’t receive IGMP query message from the [...]

Configuration procedure: Ste p Operation Description 1 Enable IGMP Snooping function Required. Enable IGMP Snooping globally on the switch and for the port on Multicast → IGMP Snooping → Snooping Config and Port Config page. 2 Create a multicast VLAN Required. Creat e a multicast VLAN and add all the member ports and router ports to the VLAN on[...]

 Configuration Procedure Ste p Operation Description 1 Create VLANs Create three VLANs with the VLAN ID 3, 4 and 5 respectively , and specify the description of VL AN3 as Multicast VLAN on VLAN → 802.1Q VLAN page. 2 Configure ports On VLAN → 802.1Q VLAN function pages. For port 3, configure its link type as GENERAL and its egress rule as T A[...]

Choose the menu Multicast → Multicast IP → Multicast IP T able to load the following page. Figure 8-8 Multicast IP T able The following entries are displayed on this screen:  Search Option Multicast IP: Enter the multicast IP address the desired entry must carry . VLAN ID: Enter the VLAN ID the desired entry must carry . Port: Select the por[...]

Figure 8-9 S tatic Multicast IP T able The following entries are displayed on this screen:  Create St atic Multicast Multicast IP: Enter static multicast IP address. VLAN ID: Enter the VLAN ID of the multicas t IP . Forward Port: Enter the forward port of the multicast group.  Search Option Search Option: Select the rules for displaying multi[...]

if the port can not be added to the mul ticast group, the switch will drop the IGMP report message. In that way , the multicast streams will not be trans mitted to this port, which allows you to control hosts joining the multicast group. 8.4.1 IP-Range On this page you can figure the desired IP-ranges to be filtered. Choose the menu Multicast → M[...]

Figure 8-1 1 Port Filter The following entries are displayed on this screen:  Port Filter Config Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select the desired port for multicas t filtering. It is multi-optional. Port: Displays the port numbe r . Filter: Select Enable/[...]

Configuration Procedure: Ste p Operation Description 1 Configure IP-Range Required. C onfigur e IP-Range to be filtered on Multicast → Multicast Filter → IP-Range page. 2 Configure multicast filter rules for ports Optional. Configure multicast filter rules for ports on Multicast → Multicast Filter → Port Filter page. 8.5 Packet S t atistics[...]

Port Select: C lick the Select button to quick-select the corresponding port based on the port number you entered. Port: Displays the port number of the switch. Query Packet: Displays the number of query packets the port received. Report Packet (V1): Displays the number of IGMPv1 report packets the port received. Report Packet (V2): Displays the nu[...]

Chapter 9 QoS QoS (Quality of Service) functi ons to provide different quality of service for various network applications and requirements and optim ize the bandwidth resource dist ribution so as to provide a network service experience of a better quality .  QoS This switch classifies the ingr ess packets, map s the p ackets to dif ferent prior[...]

2. 802.1 P Priority Figure 9-2 802.1Q frame As shown in the figure above, each 802.1Q T ag ha s a Pri field, comprising 3 bits. The 3-bit priority field is 802.1p priority in the range of 0 to 7. 802.1P priority determi nes the priority of the packet s based on the Pri value. On the Web management page of the switch, you can configure different pri[...]

Figure 9-4 SP-Mode 2. WRR-Mode: Weight Round Robin Mode. In this mode, packe ts in all the queues are sent in order based on the weight value for each queue and every queue can be assured of a certain service time. The weight value indicates the occupied proportion of the resource. WRR queue overcomes the disadvantage of SP queue that the packets i[...]

9.1 DiffServ This switch classifies the ingr ess packets, map s the p ackets to dif ferent priority queues and then fo rwar ds th e pac ke ts ac cor din g to sp eci fi ed scheduli ng algorithms to implement QoS function. This switch implem ents three priority modes based on port, on 802 .1P and on DSCP , and support s four queue sche duling alg ori[...]

Configuration Procedure: Ste p Operation Description 1 Select the port priority Required. On QoS → DiffServ → Port Priority page, configure the port priority . 2 Configure the mapping relation between the CoS priority and TC Required. On QoS → DiffServ → 802.1P/CoS mapping page, configure the mappi ng relation between the CoS and TC. 3 Sele[...]

9.1.3 802.1P/CoS Mapping On this page you can configu re the mapping rel ation between t he 802.1P priority tag-id/C oS-id and the TC-id. 802.1P gives the Pri fi eld in 802. 1Q tag a recommen ded definitio n. This field, rangin g from 0-7, is used to divid e packets into 8 priorities. 802.1P Priority is ena bled by default, so the packets with 802.[...]

Configuration Procedure: Ste p Operation Description 1 Configure the mapping relation between the 802.1P priority T ag/CoS and the TC Required. On QoS → DiffServ → 802.1P/CoS mapping page, configure the mappi ng relation between the 802.1P priority T ag/CoS and the TC. 2 Select a schedule mode Required. On QoS → DiffServ → Schedule Mode pag[...]

Priority Level: Indicates the priority level the packet s with tag are mapped to. The priority levels are labeled as TC0, TC1, TC2 and TC3. Note: T o complete QoS function confi guration, you have to go to the Schedule Mode page to select a schedule mode after the configurati on is finished on this page. Configuration Procedure : Ste p Operation De[...]

The following entries are displayed on this screen:  Rate Limit Config Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select the desired port for Rate conf iguration. It is multi-optional. Port: Displays the port number of the switch. Ingress Rate (bps ): Configure the ba[...]

Figure 9-1 1 S torm Control The following entries are displayed on this screen:  Storm Control Config Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select the desired port for S tor m Control configuration. It is multi-optional. Port: Displays the port number of the swit[...]

 OUI Address (Organizationally unique i dentifier address) The switch can determine whether a received packet is a voice packet by checking its source MAC address. If the source MAC address of a packet complies with the OUI addresses configured by the system, the packet is determined as vo ice packet and transmitted in voice VLAN. An OUI address[...]

ACCESS: Supported. TRUNK: Not supported. UNT AG voice stream GENERAL: Supported. The defau lt VLAN of the port should be voice VLAN and the egress rule of the access port in the voice VLAN should be UNT AG . ACCESS: Not supported. TRUNK ： Supported. The default VLAN of the port should n ot be voice VLAN. TA G v o i c e stream GENERAL ： Supporte[...]

9.3.1 Global Config On this page, you can configur e the global parameters of the voice VLAN, including VLAN ID and aging time. Choose the menu QoS → V oice VLAN → Global Config to load the following page. Figure 9-12 Global Configuration The following entries are displayed on this screen:  Global Config V oice VLAN: Select Enable/Disable V [...]

Figure 9-13 Port Config Note: T o enable voice VLAN function for the LAG member port, please ensure its member state accords with its port mode. If a port is a member port of voice VLAN, changing its port mode to be “Auto” will make the port leave the voice VLAN and will not join the voice VLAN automatically until it re ceives voice streams. Th[...]

LAG: Displays the LAG number which the port belongs to. 9.3.3 OUI Config The switch supports OUI creation and adds the MA C address of the specia l voice device to the OUI table of the switch. The switch determines whether a received packet is a voice p acket by checking its OUI address. The switch analyzes the received packet s. If the packet s re[...]

Ste p Operation Description 2 Create VLAN Required. O n VLAN → 802.1Q VLAN → Port Config page, click the Create button to create a VLAN. 3 Add OUI address Optional. On QoS → Vo i c e V L A N → OUI Config page, you can check whether the switch is supporting the OUI template or not. If not, please add the OUI address. 4 Configure the paramete[...]

Chapter 10 ACL ACL (Access Control List) is used to filter packe ts by configuring match rules and process policie s of packet s in order to control the access of the illegal users to the network. Besides, ACL functions to control traffic flows and save network resource s. It provides a flex ible and secured access control policy and facilitates yo[...]

10.1.2 Time-Range Create On this page you can create time-ranges. Choose the menu ACL → Time-Range → Time-Range Create to load the following p age. Figure 10-2 T ime-Range Create Note: T o successfully configure time -ranges, please firstly specify ti me-slices and then time-ranges. The following entries are displayed on this screen:  Create[...]

10.1.3 Holida y Config Holiday mode is applied as a different secured a ccess control policy from the week mode. On this page you can define holidays according to your work arrangement. Choose the menu ACL → Time-Range → Holiday Config to load the following page. Figure 10-3 Holiday Configuration The following entries are displayed on this scre[...]

Choose the menu ACL → ACL Config → ACL Summary to load the following page. Figure 10-4 ACL Summary The following entries are displayed on this screen:  Search Option Select ACL: Select the ACL you have created ACL T ype: Displays the type of the ACL you select. Rule Order: Displays the rule order of the ACL you select.  Rule T able Displa[...]

Choose the menu ACL → ACL Config → MAC ACL to load the following page. Figure10-6 Create MAC Rule The following entries are displayed on this screen:  Create MAC-Rule ACL ID: Select the desired MAC AC L for configuration. Rule ID: Enter the rule ID. Operation: Select the operation for the switch to process packet s which match the rules. [...]

Figure10-7 Create S tandard-IP Rule The following entries are displayed on this screen:  Create St andard-IP Rule ACL ID: Select the desired S tandard-I P ACL for configuration. Rule ID: Enter the rule ID. Operation: Select the operation for the switch to process packet s which match the rules.  Permit: Forward packet s.  Deny: Discard Pac[...]

Figure10-8 Create Extend-IP Rule The following entries are displayed on this screen:  Create Extend-IP Rule ACL ID: Select the desired Extend-I P ACL for configuration. Rule ID: Enter the rule ID. Operation: Select the operation for the switch to process packet s which match the rules.  Permit: Forward packets.  Deny: Discard Packets. S-IP[...]

10.3 Policy Config A Policy is used to control the data p ackets those match the corresponding ACL rules by configuring ACLs and actions t ogether for effect. The operations here include stream mirror , stream condition and redirect. The Policy Config can be implemented on Polic y Summary , Police Create and Action Create pages. 10.3.1 Policy Summa[...]

Figure 10-10 Create Policy The following entries are displayed on this screen:  Create Policy Policy Name: Enter the name of the policy . 10.3.3 Action Create On this page you can add ACLs and creat e corresponding actions for the policy . Choose the menu ACL → Policy Config → Action Create to load the following page. Figure 10-1 1 Action Cr[...]

Redirect : Select Redirect to change the forwarding direction of the data packet s in the policy .  Destination Port: Forward the data packet s those match the corresponding ACL to the specific port. 10.4 Policy Binding Policy Binding function can have the policy take its effect on a specific port/VLAN. The policy will take ef fect only when it [...]

Figure 10-13 Bind the policy to the port The following entries are displayed on this screen:  Port-Bind Config Policy Name: Select the name of the po licy you want to bind. Port: Enter the number of the port you want to bind.  Port-Bind T able Index: Displays the index of the binding policy . Policy Name: Displays the name of the binding poli[...]

VLAN ID: Displays the ID of the VL AN bound to the corresponding policy . Direction: Displays the binding direction. Configuration Procedure: Ste p Operation Description 1 Configure effective time-range Required. On ACL → Time-Range configuration pages, configure the effective time-ranges for ACLs. 2 Configure ACL rules Required. On ACL → ACL C[...]

 Configuration Procedure Ste p Operation Description 1 Create VLANs On VLAN → 802.1Q VLAN p age, create VLAN 6, specify its description as RD, configure port 16 and port 2 as the members of VLAN 6. Connect RD department to port 16 of TL-SG5428/TL-SG5412F , and configure the link type of port 16 as GENERAL and it s PVID as 6. The IP range of VL[...]

Ste p Operation Description 5 Configure for requirement 4 and 5 On ACL → ACL Config → ACL Create page, create ACL 101. On ACL → ACL Config → St andard-IP ACL p age, select ACL 101 , create Rule 4, configure operatio n as Deny , configure S-IP as 172.31.70.1 and mask as 255.255.255. 0, configure D-IP as 172.31.50.1 and mask as 255. 255.255.0[...]

Chapter 11 Network Security Network Security module is to provide the multip le protection measures fo r the network security , including five submenus: IP-MAC Binding , ARP Inspection , IP Source Guard, DoS Defend and 802.1X . Please configure t he functions appropriate to your need. 11.1 IP-MAC Binding The IP-MAC Binding function allows you to bi[...]

The following entries are displayed on this screen:  Search Option Source: Select a Source from the pull-down list and click the Search button to view your desired entry in the Binding T able.  All: All the bound entries will be displayed.  Manual: Only the manually added entries will be displayed.  Scanning: Only the entries formed via[...]

Figure 1 1-2 Manual Binding The following entries are displayed on this screen:  Manual Binding Option Host Name: Enter the Host Name. IP Address: Enter the IP Address of the Host. MAC Address: Enter the MAC Address of the Host. VLAN ID: Enter the VLAN ID. Port: Select the number of por t connected to the Host. Protect T ype: Select the Protect [...]

11.1.3 ARP Scanning ARP (Address Resolution Protocol) is u sed to analyze and map IP addresses to the corresponding MAC addresses so that p ackets can b e delivered to their destinations correctly . IP address is the address of the Host on Network layer . MAC address, the address of the Host on Data link layer , is necessary for the packet to reach[...]

Figure 1 1-4 ARP Scanning The following entries are displayed on this screen:  Scanning Option St art IP Address: Specify the S tart IP Address. End IP Address: S pecify the End IP Address. VLAN ID: Enter the VLAN ID. If blank, the switch will send the untagged packet s for scanning. Scan: C lick the Scan button to scan the Hosts in the LAN. [...]

 DHCP W orking Principle DHCP works via the “Client/Server” communication mode. The Client applies to the Server for configuration. The Server assigns the configuration information, such as the IP address, to the Client, so as to reach a dynamic employ of the network source. A Server can assign the IP address for several Clients, which is il[...]

（ 2 ） DHCP-OFFE R St age: Up on receiving the DHCP-DISCOVER packet, the DHCP Server selects an IP address from the IP pool according to the assigning priority of the IP addresses and replies to the Client with DHCP-OFFER packet carrying the IP address and other information. （ 3 ） DHCP-REQUEST Stage: In the situation that there ar e several [...]

Figure 1 1-7 DHCP Cheatin g At tack Impl ementation Procedure DHCP Snooping feature only allows the port connect ed to the DHCP Server as the trusted port to forward DHCP pa ckets and thereby ensures that users get proper IP addresses. DHCP Snooping is to monitor the process of t he Host obtaining the IP address from DHCP server , and record the IP[...]

Figure 1 1-8 DHCP Sno oping Note: If you want to enable the DHCP Snooping feature for the member port of LAG , please ensure the parameters of all the member port s are the same. The following entries are displayed on this screen:  DHCP Snooping Config DHCP Snooping: Enable/Disable the DHCP Snooping function globally . Global Flow Control: Selec[...]

excessive massages will be discarded. Decline Threshold: Select the value to specify the minimum transmission rate of the Decline packets to trigger the De cline protection for the specific port. Decline Flow Control: Select the value to s pecify the Decline Flow Control. The traffic flow of the corresponding port will be limited to be this value i[...]

anothe r or access to external network via Gatewa y . However , since ARP protocol is implemented with the premise that all the Hosts and Gateways ar e trusted, there are high security risks during ARP Implement ation Procedure in the actual comp lex network. Thus, the cheating attacks against ARP , such as imitating Gateway , cheating Ga teway , c[...]

Figure 1 1-10 ARP Attack – Cheating Gateway As the above figure shown, the at tacker sends the fake ARP p ackets of Host A to the Gateway , and then the Gateway will automatically update its ARP table after receiving the ARP packet s. When the Gateway tries to communicate with Ho st A in LAN, it will encapsulate this false destination MAC address[...]

As the above figure shown, the atta cker sends the fake ARP packe ts of Host A to Host B, and then Host B will automatically update its ARP table afte r receiving the ARP p ackets. When Host B tries to communicate with Host A, it will encapsulat e this false destination MAC address for packets, which results in a breakdown of the normal communicati[...]

 ARP Flooding Attack The attacker broadcasts a mass of various fake AR P pa ckets in a network segment to occupy the network bandwidth viciously , which results in a dramatic slowdown of network speed. Meantime, the Gateway learns the false IP address-to -MAC address mapping entries from these ARP packet s and updates its ARP table. As a result,[...]

 T rusted Port T rusted Port: Select the port for which the AR P Detect function is unnece ssary as the T rusted Port . The specific ports, such as up-linked port, routing port and LAG port, shoul d be set as T rusted Port. T o ensure the normal communicati on of the switch, please configure the ARP T rusted Port before enabling the ARP Detect f[...]

Figure 1 1-14 ARP Defend The following entries are displayed on this screen:  ARP Defend Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select your desired port for confi guration. It is multi-optional. Port: Displays the port number . Defend: Select Enable/Disable the AR[...]

Figure 1 1-15 ARP S tatistics The following entries are displayed on this screen:  Auto Refresh Auto Refresh: Enable/Disable the Auto Refresh feature. Refresh Interval: S pecify the refresh interval to display the ARP S tatistics.  Illegal ARP Packet Port: Displays the port number . T rusted Port: Indicates the port is an ARP T rusted Port or[...]

Figure 1 1-16 IP Source Guard The following entries are displayed on this screen:  IP Source Guard Config Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select your desired port for confi guration. It is multi-optional. Port: Displays the port number . Security T ype: Sel[...]

p acket s may incur a breakdown of the network. The switch can defend several types of DoS att ack listed in the following table. DoS Att ack T ype Description Land Attack The attacker sends a specific fake SYN p acke t to the destination Host. Since both the source IP address and the destination IP address of the SYN packet are set to be the IP ad[...]

11.4.1 DoS Defend On this page, you can enable the DoS De fend type appropriate to your need. Choose the menu Network Securit y → DoS Defend → DoS Defend to load the following page. Figure 1 1-17 DoS Defend The following entries are displayed on this screen:  Configure DoS Protection: Allows you to Enable/Disable DoS Protection function. [...]

protocol ena bled, a supplicant can access the LAN only when it passes the authentication, whereas those failing to pass the authentication are denied when accessing the LAN.  Architecture of 802.1X Authentication 802.1X adopts a client/server architecture with three entities: a supplicant system, an authenticator system, and an authentic ation [...]

 802.1X Authentication Procedure An 802.1X authentication can be initiated by suppl i cant system or authent icator system. When the authenticator system detec ts an unauthenticated supp licant in LAN, it will initiate the 802.1X authentication by sending EAP-Reque st/Identity packet s to the supp licant. The supplicant system can also launch an[...]

5. Upon receiving the key (encapsulated in an EAP-Request/MD5 Challenge packet) from the switch, the client program encrypts the passwor d of the supplicant system with the key and sends the encrypted password (contained in an EAP-Response/MD5 Challenge packet) to the RADIUS server through the switch . (The encryption is irreversible.) 6. The RADIU[...]

requ est packet to the supplicant system if t he supplicant system fails to respond in the specified timeout period. （ 2 ） RADIUS server timer ( Server Timeout ): This timer is triggered by the switch after the switch sends an authentic ation request packet to RADIUS server . The switch will resend the authentication request packet if the RADIU[...]

Figure 1 1-22 Global Config The following entries are displayed on this screen:  Global Config 802.1X: Enable/Disable the 802.1X function. Auth Method: Select the Authentication Me thod from the pull-down list.  EAP-MD5: IEEE 802.1X authentication system uses extensible authenticat ion protocol (EAP) to exchange information between the switch[...]

Supplicant T imeout: S pecify the maximum time for the switch to wait for the response from supplicant bef ore resending a request to the supplicant. Server Timeout: S pecify the maximum time for the switch to wait for the response from authent ication server before resending a request to the authentication server . 11.5.2 Port Config On this page,[...]

Control T ype: S pecify the Control T ype for the port.  MAC Based: Any client connected to the port should pass the 802.1X Authentication for access.  Port Based: All the clients connected to the port can access the network on the c ondition that any one of the clients has passed the 802.1X Authentication. Authorized: Displays the authentica[...]

Secondar y IP: Enter the IP address of the alternate accounting server . Accounting Port: Set the UDP port of accounting se rver(s). The default port is 1813. Accounting Key: Set the shared p assword for the switch and the accounting servers to exchange messages. Note: 1. The 802.1X function takes ef fect only when it is enabled globally on th e sw[...]

Chapter 12 SNMP  SNMP Overvie w SNMP (Simple Network Management Protocol) has gained the most extens ive application on the UDP/IP networks. SNMP provides a management frame to monitor and maintain the network devices. It is used for automatica lly managing the various network devices no matter the physical differences of the devices. Currently [...]

failing to p ass community name authentication are discarded. The community name can limit access to SNMP Agent from SNMP NMS, functioning as a password. SNMP v2c: SNMP v2c also adopts community name authentic ation. It is compatible with SNMP v1 while enlarges the function of SNMP v1. SNMP v3: Basing on SNMP v1 and SNMP v2c, SNMP v3 extremely enha[...]

SNMP module is used to configure the SNMP f unction of the switch, including three submenus: SNMP Config , Notification and RMON . 12.1 SNMP Config The SNMP Config can be implemented on the Global Config , SNMP Vie w , SNMP Group , SNMP User and SNMP Community pages. 12.1.1 Global Config T o enable SNMP function, please configure t he SNMP function[...]

12.1.2 SNM P V iew The OID (Object Identifier) of t he SNMP packets is used to describe the managed objects of the switch, and the MIB (Management Information Base) is the set of the OIDs. The SNMP View is created for the SNMP management station to manage MIB objects. Choose the menu SNMP → SNMP Config → SNMP Vie w to load the following page. F[...]

Figure 12-5 SNMP Group The following entries are displayed on this screen:  Group Config Group Name: Enter the SNMP Group name. The Group Name, Security Model and Security Level compose the identifier of the SNMP Group. These three items of the User s in one group should be the same. Security Model: Select the Security Model for the SNMP Group. [...]

 Group T able Select: Select the desired entry to delete the corresponding group. It's multi-optional. Group Name: Displays the Group Name here. Security Model: Displays the Security Model of the group. Security Level: Displays the Security Level of the group. Read Vie w : Displays the Read View name in the entry . Wri te View : Displays th[...]

User T ype: Select the type for the User .  Local User: Indicates that the us er is connected to a local SNMP engine.  Remote User: Indicates that the us er is connected to a remote SNMP engine. Group Name: Select the Group Name of the Us er . The User is classified to the corresponding Group according to its Group Name, Security Model and Se[...]

12.1.5 SNM P Community SNMP v1 and SNMP v2c adopt community name authentication. The comm unity name can limit access to the SNMP agent from SNMP network ma nagement st ation, functioni ng as a password. If SNMP v1 or SNMP v2c is employed, you can di rectly configure the SNMP Community on this page without configuring SNMP Group and User . Choose t[...]

Configuration Procedure:  If SNMPv3 is employed, please take the following step s: Ste p Operation Description 1 Enable SNMP function globally . Required. On the SNMP → SNMP Config → Global Config page, enable SNMP function globally . 2 Create SNMP V iew . Required. On the SNMP → SNMP Config → SNMP View page, create SNMP V iew of the man[...]

12.2 Notification With the Notification function enabl ed, the switch can initiatively report to the management station about the important events that o ccur on the V iews (e.g., the manag ed d evice is rebooted), which allows the management station to monitor and process the events in time. The notification information in cludes the following two[...]

Ty p e : Select the type for the notifications.  Tr a p : Indicates traps are sent.  Inform: Indicates informs are sent. The Inform type has a higher security than the T rap type. Retry: S pecify the amount of times t he switch resends an inform request. The switch will resend the inform request if it doesn’t get the response from the manag[...]

RMON Group Function History Group After a history group is confi gured, the switch collects and records network statistics information periodically , based on which the m anagement station can monitor network effectively . Event Group Event Group is used to define RMON events. Alarms occur when an event is detected. S tatistic Group S tatistic Grou[...]

12.3.2 Event Config On this page, you can configure the RMON events. Choose the menu SNMP → RMON → Event Config to load the following page. Figure 12-10 Event Config The following entries are displayed on this screen:  Event T able Select: Select the desired entry for configuration. Index: Displays the index number of the entry . User: Enter[...]

Figure 12-1 1 Alarm Config The following entries are displayed on this screen:  Alarm T able Select: Select the desired entry for configuration. Index: Displays the index number of the entry . Va r i a b l e : Select the alarm variables from the pull-down list. Port: Select the port on which the Alarm entry acts. Sample T ype: S pecify the sampl[...]

Interval: Enter the alarm interv al time in seconds. Ow ner : Enter the name of the device or user that defined the entry . Statu s: Select Enable/Disable t he corresponding alarm entry . Note: When alarm variables exceed the Threshold on the same direction continuously for several times, an alarm event will only be generated on the first time, tha[...]

Chapter 13 LLDP LLDP (Link Layer Discovery Protocol) is a Layer 2 protocol that is used for network devices to advertise their own device information periodically to neighbors on the same IEEE 802 local area network. The advertised informati on, including details such as dev ice identification, capabilities and configuration settings, is repr esent[...]

 Disable: the port cannot tr ansmit or receive LLDPDUs. 2) LLDPDU transmission mechanism  If the ports are working in TxRx or Tx m ode, they will advertise local information by sending LLDPDUs periodically .  If there is a change in the local device, the change notification w ill be advertised. T o prevent a series of successive LLDPDUs tr[...]

TL V T ype TL V Name Description Usage in LLDPDU 3 T ime T o Live Indicates th e number of seconds that the neighbor device is to regard the local information to be valid. Mandatory 4 Port Description Identifies the description string of the port. Optional 5 System Name Identifies the system name. Optional 6 System Description Identifies the system[...]

S ystem Name TLV The System Name TLV allows network manageme nt to advertise the system's assigned name, whic h should be the system's fully qualified domain name. Management Address TLV The Management Address TLV identifies an address associated with the local LLDP agent that may be used t o reach higher entities to assist discovery by n[...]

Figure 13-1 Global Configuration The following entries are displayed on this screen:  Global Config LLDP: Enable/disable LLDP function globally .  Parameters Config T ransmit Interval: Enter the interval for the local device to transmit LLDPDU to its neighbors. The default value is 30 seconds. Hold Multiplier: Enter a multiplier on the Tr ans[...]

Figure 13-2 Port Configuration The following entries are displayed on this screen:  LLDP Port Config Port Select: Select the desired port to configure. Admin St atus: Select the port’s LLDP operating mode:  Tx&Rx: Send and receive LLDP frames.  Rx_Only: Only receive LLDP frames.  Tx_Only: Only send LLDP frames.  Disable: Neithe[...]

Figure 13-3 Local Information The following entries are displayed on this screen:  Auto Refresh Auto Refresh: Enable/Disable the aut o refresh function. Refresh Rate: Specify the a uto refresh rate.  Local Info Enter the desired port number and click Select to display the information of the correspon ding port. 13.2.2 Neighbor Info On this pa[...]

The following entries are displayed on this screen: Enable/Disa ble the aut o refresh function.  C lick the Select button to quick-select the corresponding port based on the port number you entered. Local Port: g to the neighbor device. e: ription: evice. al port. neighbor device. 13.3 Device St atistic al device through this feature. e followin[...]

Figure 13-5 Device S tatistics The following entries are displayed on this screen:  Auto Refresh Auto Refresh: Enable/Disable the aut o refresh function. Refresh Rate: Specify the a uto refresh rate.  Global St atistics Last Up date: Displays latest update ti me of the statistics. T ot al Insert s: Displays the number of neighbors inserted ti[...]

Receiv e T ot al: Displays the number of LLDPDUs received by this port. Discards: Displays the number of LLDPDUs discarded by this port. Errors: Displays the number of error LLDPDUs received by this port. Ageout s: Displays the number of overtime neighbors linking to this port. TL V Discards: Displays the number of TL Vs dropped by this port. TL V [...]

Chapter 14 Cluster With the development of network technology , the network scale is getting larger and more network devices are required, which may result in a mo re complicated network m anagement system. As a large number of devices need to be assigned diff erent network addresses and every management device needs to be respectively configured t[...]

The roles can be change d from one to ant her following the specified rules.  The current switch you create cluster is specified as t he commander switch.  The commander switch discovers and determines candidate switches by collecting related information.  After being added to the cluster , the candidate switch becomes to be the member swi[...]

Figure 14-2 Neighbor Information The following entries are displayed on this screen:  Neighbor Search Option: Select the information the desir ed entry should contain and then click the Search button to display the desired entry in the following Neighbor Information table.  Neighbor Info Native Port: Displays the port number of the switch. Re[...]

Figure 14-3 NDP Summary The following entries are displayed on this screen:  Global Config NDP: Displays the global NDP st atus (enabled or disabled) for the switch. Aging Time: Displays the period for the neighbor switch to keep the NDP packet s from this switch. Hello Time: Displays the interval to send NDP packet s.  Port St atus Port: Dis[...]

Choose the menu Cluster → NDP → NDP Config to load the following page. Figure 14-4 NDP Config The following entries are displayed on this screen:  Global Config NDP: Select Enable/Disable NDP function globally . Aging Time: Enter the period for the neighbor switch to keep the NDP p ackets from this switch. Hello Time: Enter the interval to s[...]

14.2 NTDP NTDP (Neighbor T opology Discovery Protocol ） is used for the commander switch to collect NDP information. NTDP transmit s and forwards NTDP topology collection request based on NDP neighbor information table, and collects the NDP information and neighboring connection information of each device in a specific network r ange. The command[...]

Hop s: Displays the hop count from this device to the switch. Neighbor Info: Click the Det ail button to view the complete information of this device and its neighbors. Collect T opology: Click the Collect T opology button to collect NTDP information of the switch so as to collect the latest network topology . Click the Det ail button to view the c[...]

Figure 14-7 NTDP Summa ry The following entries are displayed on this screen:  Global Config NTDP: Displays the NTDP st atus (enabled or disabled) of the switch globally . NTDP Interval T ime: Displays the interval to co llect topology information. NTDP Hop s: Displays the hop count the switch topology collects. NTDP Hop Delay: Displays the time[...]

Figure 14-8 NTDP Co nfig The following entries are displayed on this screen:  Global Config NTDP: Select Enable/Disable NTDP for the switch globally . NTDP Interval T ime: Enter the interval to collect topol ogy information. The default i s 1 minute. NTDP Hop s: Enter the hop count the switch topology collects. The default is 3 hops. NTDP Hop De[...]

NTDP: Displays NTDP status (e nabled or disabled) of the current port. Enable: Click the Enable button to enable NTDP feature for the port you select. Disable: Click the Disable button to disable NTDP feature for the port you select. Note: NTDP function is ef fective only when NTDP f unction is enabled globally and for the port. 14.3 Cluster A comm[...]

 For a commander switch ， the following page is displayed: Figure 14-10 Cluster Summary for Commande r Switch The following entries are displayed on this screen:  Global Config Cluster: Displays the cluster status (enabl ed or disabled) of the switch. Cluster Role: Displays the role the switch plays in the cluster . Cluster Name: Displays t[...]

Hop s: Displays the hop count from the member switch to the commander switch.  For a member switch, the following page is displayed: Figure 14-1 1 Cluster Summary for Member Swit ch The following entries are displayed on this screen:  Global Config Cluster: Displays the cluster status (enabl ed or disabled) of the switch. Cluster Role: Displa[...]

 For a candidate switch, the following page is displayed. Figure 14-13 Cluster Configurat ion for Candid ate Switch The following entries are displayed on this screen:  Current Role Role: Displays the role the current switch plays in the cluster .  Role Change Individual: Select this o ption to change the role of the switch to be individua[...]

 Current Role Role: Displays the role the current switch plays in the cluster .  Role Change Candidate: Select this option to change the role of the switch to be can didate switch.  Cluster Config Hold Time: Enter the time for the switch to keep the cluster information. Interval Time: Enter the interval to send handshake packets.  For a[...]

Role: Displays the role the curr ent switch plays in the cluster .  Role Change Candidate: Select this option to change the role of the switch to be can didate switch. 14.3.3 Member Config When this switch is the commander switch of the cluster , via the commander switch you can manually add a candidate switch to the cluster as well as remove th[...]

14.3.4 Cluster T opology On this page you can see the whole cluster topology . Click the node switch to directly log on to the corresponding Web management page for you to c onfigure and manage this switch. Double-click the node switch to view its detailed information. Choose the menu Cluster → Cluster → Cluster T opology to load the following [...]

 If the switch is a commander switch in the cluster , please take the following steps. Ste p Operation Description 1 Enable the NDP function globally and for the port, and then configure NDP parameters Optional. On Cluster → NDP → NDP Config page, enable the NDP function on the switch. 2 Enable the NTDP function globally and for the port, an[...]

14.4 Application Example for Cluster Function  Network Requirements Three switches form cluster, one commander swit ch and two member switches. The administrator manages all the switches in the cl uster via the commander switch.  Port 1 of the commander switch is connecting to the external ne twork, port 2 is connecting to member switch 1 and[...]

Ste p Operation Description 3 Create a cluster and configure the related parameters On Cluster → Cluster → Cluster Config page, configure the role as Commander and enter the related information. IP pool: 175.128.0.1 Mask: 255.255.255.0 4 Configure the member switch On Cluster → Cluster → Member Config page, select the member switch and clic[...]

Chapter 15 Maintenance Maintenance module, assembling the commonly used system tools to manage the switch, provides the convenient method to locate and solve the network problem. （ 1 ） System Monitor: Monitor the utilization stat us of the memory and the CPU of switch. （ 2 ） Log: View the configuration parameters of t he switch and find out[...]

15.1.2 Memor y Monitor Choose the menu Maintenance → S ystem Monitor → Memory Monitor to load the following page. Figure 15-2 Memory Monitor Click the Monitor button to enable the switch to monitor and display its Memory utilization rate every four seconds. 15.2 Log The Log system of switch can re cord, classify and manage the syst em informati[...]

The Log function is implemented on the Log T able , Local Log , Remote Log and Backup Log pages. 15.2.1 Log T able The switch supports logs output to two directions , namely , log buf fer and log file. The information in log buffer will be lost af ter the switch is reboot ed or powered off whereas the information in log file will be kept ef fective[...]

Figure 15-4 Local Log The following entries are displayed on this screen:  Local Log Config Select: Select the desired entry to conf igure the corresponding local log. Log Buffer: Indicates the RAM for saving system log. The inforamtion in th e log buffer is displayed on the Log T able page. It will be lost when the switch is restarted. Log File[...]

The following entries are displayed on this screen:  Log Host Index: Displays the index of the log host. The switch supports 4 log hosts. Host IP: Configure the IP for the log host. UDP Port: Displays the UDP port used for receiving/sending log information. Here we use the standard port 514. Severity: Specify the severity level of the log inform[...]

15.3.1 Cable T est Cable T est functions to test the connection status of the cable connected to the switch, which facilitates you to locate a nd diagn ose the trouble spot of the network. Choose the menu Maintenance → Device Diagnostics → Cable T est to load the following page. Figure 15-7 Cable T est The following entries are displayed on thi[...]

Figure 15-8 Loopback The following entries are displayed on this screen:  Loopback T ype Internal: Select Internal to test whether the port is available. External: Select External to test whether the device connected to the port of the switch is available  Loopback Port Loopback Port: Select the desired port for loopback test. T est: Click th[...]

Figure 15-9 Ping The following entries are displayed on this screen:  Ping Config Destination IP: Enter the IP address of the destination node for Ping test. Ping Times: Enter the amount of times to send test data during Ping testing. The default value is recommended. Dat a Size: Enter the size of the sending data during Ping testing. The defaul[...]

Figure 15-10 T racert The following entries are displayed on this screen:  T racert Config Destination IP: Enter the IP address of the destination device. Max Hop: S pecify the maximum number of t he route hops the test data can pass through.  T racert Res ult Here you can view the T racert result. Return to CONTENTS 225[...]

Chapter 16 System Maintenance via FTP The firmware can be downloaded to the switch via FTP function. FTP (File Transfer Protocol), a protocol in the applicati on layer, is mainly used to transfer files between the remote server and the local PCs. It is a common protocol used in the IP network for file s transfer. If there is something wrong with th[...]

2 ） The Connection Description Wi ndow will prompt shown as Figure 16-3 . Enter a name into the Name field and click OK . Figure 16-3 Connect ion Description 3 ） Select the port to connect in Figure 16-4 and click OK . Figure 16-4 Select the port to connect 4 ） Configure the port selected in t he step above shown as the following Figure 16-5 [...]

Figure 16-5 Port Settings 3. Download Firmware via bootUtil menu T o download firmware to the switch via FTP func tion, you need to enter into the bootUtil menu of the switch and take the following steps. 1 ） Connect the console port of the PC to the console port of th e switch and open hyper terminal. Connect FTP server to port 1 of the switch. [...]

[TP-LINK]: ifconfig ip 172.31.70.22 mask 255.255.255.0 gateway 172.31.70.1 4 ） Configure the parameters of the FTP server which keeps the upgrade firmware. Later you can download the firmware to the switch from the FTP server . The format of the command is: f tp host xxx.xxx.xxx.x xx user xxxxx pw d xxxxx file xxxx xx.bin. Here take the following[...]

Appendix A: Sp ecifications IEEE802.3 10Base-T Ethernet IEEE802.3u 100Base-TX IEEE802.3ab 1000Base-T Gigabit Ethernet IEEE802.3z 1000Base- X Gigabit Ethernet IEEE802.3x Flow Control IEEE802.1p QoS IEEE802.1q VLAN Standards IEEE802.1X Port-based Access Authentication Ethernet: 10Mbps HD ， 20Mbps FD Fast Ethernet: 100Mbps HD ， 200Mbps FD Transmis[...]

Appendix B: Configuring the PCs In this section, we’ll introduce how to install and configure the TCP/IP correctly in Windows 2000. First make sure your Ethernet Adapter is work ing, refer to the adapter ’s manual if necessary . 1. Configure TCP/IP comp onent 1) On the Windows taskbar , click the Start button, and then click Control Panel . 2) [...]

232 5) The following TCP/IP Properties window will display and the IP Address tab is open on this window by default. Figure B-3 6) Select Use the following IP address . And the following items will be available. If the switch's IP address is 192.168.0.1, specify IP address as 192.168.0. x (x is from 2 to 254), and the Subnet mask as 255.255.25[...]

Appendix C: 802.1X Client Sof tware In 802.1X mechanism, the supplicant Client s hould be equipped with the corresponding client software complied with 802.1X protocol st andar d for 802.1X authenticati on. When the switch TL-SG5428 works as the authenticator system, please ta ke the following instructions to in stall the TpSupplicant provided on t[...]

Figure C-3 Welcom e to the InstallShield Wizard 4. T o continue, choose the destination location for the installation files and click Next on the following screen. Figure C-4 Choose Destination Location By default, the installation files are saved on t he Program Files folder of system disk. Click the Change button to modify the destinati on locati[...]

Figure C-5 Install the Prog ram 6. The InstallShield Wizard is installing Tp Supplicant shown as the following screen. Please wait. Figure C-6 Setup S tatus 7. On the following screen, click Finish to complete the installation. 235[...]

Figure C-7 InstallShield Wi zard Complete Note: Please pay attention to the tips on the above scr een. If you have not installed WinPcap 4.0.2 or the higher version on your comput er, the 802.1X Client Software TpSuppli cant can not work. It’s recommended to go to http://www.winpcap.org to downl oad the latest version of WinPcap for installation.[...]

2. Then the following screen will appear . If you want to stop the remove proces s, click Cancel . Figure C-9 Preparing Setup 3. On the continued screen, click Ye s to remove the application from your PC. Figure C-10 Uninst all the Application 4. Click Finish to complete. Figure C-1 1 Uninstall Complete 1.3 Configuration 1. Af ter completing instal[...]

Figure C-12 TP-LINK 80 2.1X Client Enter the Name and the Passwo rd specified in the Authentic ation Server . The length of Name and Password should be less than 16 characters. 2. Click the Properties button on Figure C-1 2 to lo ad the following screen for configuring the connection prope rties. Figure C-13 Connection Propertie s Send 802.1X proto[...]

Auto reconnect af ter timeout: Select this option to allow the Client to automatically st art the connection again when it does not re ceive the handshake reply packet s from the switch within a period. 3. T o continue, click Connect button after entering the Name and Password on Figure C-12. Then the following screen will appear to prompt that the[...]

240 FA Q : Q1: Why does this error dialog box pop up when star ting up the TP-LINK 802.1X Client Software? A1: It’s because the supported DLL file is missing. Y ou are suggested to go to http://www .winpcap.org to downl oad WinPcap 4.0.2 or the hi gher version f or installation, and run the client software again. Q2: Is this TP-LINK 802.1X Client[...]

Appendix D: Glossary Access Control List (ACL) ACLs can limit network traffic and restrict access to certain users or devices by checking each packet for certain IP or MAC (i.e., Layer 2) information. Boot Protocol (BOOTP) BOOTP is used to provide bootup informat ion for netwo rk devices, including IP address information, the address of the TFTP se[...]

GMRP allows network devices to register end stations with multic ast groups. GMRP requires that any participating network devic es or end stations comply with the IEEE 802.1p standard. Group Attribute Registration Protocol (GARP) See Generic Attribute Registration Protocol. IEEE 802.1D Specifies a general method for the operation of MAC bridges, in[...]

Layer 2 Data Link layer in the ISO 7-Layer Data Commun ica tions Protocol. This is related directly to the hardware interface for network devices and passes on traffic based on MAC addresses. Link Aggregation See Port Trunk. Link Aggregation Control Protocol (LACP) Allows ports to automatically negotiate a tr unked link with LACP-c onfigured ports [...]

244 Secure Shell (SSH) A secure replacement for remote access functi ons, including Telnet. SSH can authenticate users with a cryptographic key, and encrypt data c onne ctions between manage ment clients and the switch. Simple Network Management Protocol (SNMP) The application protocol in the Internet suit e of protocols which o ffers network manag[...]