TP-Link TL-SL3428 Bedienungsanleitung

TL-SL3428/TL-SL3452 JetS tream L2 Managed Switch REV1.2.1 1910010929[...]

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[...]

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 ele[...]

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

5.1.1 Port C onfig ....................................................................................................... 30 5.1.2 Port Mi rror ........................................................................................................ 31 5.1.3 Port Secu rity ............................................................................[...]

7.4 STP Se cu rity ............................................................................................................... 85 7.4.1 Port Prot ect ...................................................................................................... 85 7.4.2 TC Prot ect ........................................................................[...]

10.2.2 ACL Creat e .................................................................................................... 130 10.2.3 MAC AC L ....................................................................................................... 131 10.2.4 S tandard-IP ACL ..............................................................................[...]

12.3.1 History C ontrol ............................................................................................... 181 12.3.2 Event C onfig .................................................................................................. 181 12.3.3 Alarm C onfig .................................................................................[...]

VIII 15.4.1 Ping ................................................................................................................ 217 15.4.2 T racer t ............................................................................................................ 218 Chapter 16 System Maint enance via FTP ...............................................[...]

Package Content s The following items should be found in your box:  One TL-SL3428/TL-SL3452 switch  One power cord  One console cable  Two mounting brackets and other fittings  Installation Guide  Resource CD for TL-SL3428/TL-SL3452 switch, including:  This User Guide  Other Helpful Information Note: Make sure that the packa[...]

Chapter 1 About this Guide This User Guide contains information for se tup and management of TL-SL3428/TL-SL3452 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 c onfigure system properties of the switch. Here mainly introduces:  System Info: Configure the descr iption, 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 p age with a certain acce[...]

Chapter Introduction Chapter 9 QoS This module is used to conf igure QoS function to provi de different quality of service for vari ous network applications and requirements. Here mainly introduces:  Diff Se rv: Co nfi gu re priorities, port priorit y , 802.1P priority and DSCP priority .  Bandwidth Control: Configure rate limit feature to co[...]

Chapter Introduction Chapter 14 Cluster This module is used to c onfigure cluster functi on to central manage the scattered devices in the net work. Here mainly introduces:  NDP : C onf igu re N DP fu nc ti on t o get the information of the directly connected neighbor dev ices.  NTDP: Configure NTDP function for the commander switch to collec[...]

Chapter 2 Introduction Thanks for choosing the TL-SL3428/TL -SL3452 JetStream L2 Managed Switch! 2.1 Overview of the Switch Designed for workgroups and department s, TL-SL3428/TL-SL3452 from TP-Link provides wire-speed performance and full set of layer 2 m anageme nt features. It pr ovides a variety of service features and multiple powerfu l functi[...]

2.3 Appearance Description 2.3.1 Front Panel Figure 2-1 Front Panel of TL-SL3428 Figure 2-2 Front Panel of TL-SL3452 The following parts are lo cated on the front panel:  10/100Mbp s Ports: Designed to connect to the device with a bandwidth of 10Mbps or 100Mbps. Each has a corresponding 10/100Mbps LED.  10/100/1000Mbps Port s: Designed to con[...]

Name Statu s Indication On A device is linked to the co rrespondin g port, but no activity . Flashing Data is being transmitted or received. Green The linked device is running at 1000Mbps. Y ellow The linked device is running at 10/100Mbps. 1000Mbps Off No device is connected to the corresponding port. Note: 1. TL-SL3428 f eatures some “Combo” [...]

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 Web-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 s[...]

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 Time , Daylight Saving Time[...]

Indicates the 1000Mbps port is not connected to a device. Indicates the 1000Mbps port is at the speed of 1000Mbp s. Indicates the 1000Mbps port is at the speed of 10Mbp s or 100Mbps. Indicates the SFP port is not connected to a device. Indicates the SFP port is at the speed of 1000Mbps. Indicates the SFP port is at the speed of 100Mbps. When the cu[...]

Figure 4-3 Bandwidth Utilization  Bandwidth Utilization Rx: Select Rx to display the bandwidth utilization of receiving p ackets on this port. Tx: Select Tx to display the bandwi dth utilization of sending p ackets on this port. 4.1.2 Device Description On this page you can configur e the description of t he switch, includin g device name, de vi[...]

Device Loca tion: Enter the location of the switch. System Cont act: Enter your contact information. 4.1.3 System T ime System T ime is the time displ ayed while the switch is runni ng. On this page you can configure the system time and the s ettings here will be used f or other time-based functions like ACL. Y ou can man ually se t the sy stem tim[...]

Note: 1. The system time will be restored to the def ault when the switch is restarted and you need to reconfigure the system time of the swi tch. 2. When Get T ime from NTP Server is selected an d no time server is configu red, the switch will get time from the time server of the Internet if it has connected to the Intern et. Choose the menu Syste[...]

Date Mode: S pecify the DST confi guration in Date mode. This configuration is recurring in use:  Offset: S pecify the time a dding in minutes when Daylight Saving T ime comes.  S tart/End Ti me: Select starting time and ending time of Daylight Saving T ime. Note: 1. When the DST is disabl ed, the predefined mode, recu rring mode and date mod[...]

Management VLAN: Enter the ID of management VLAN, the only VLAN through which you can get access to the switch . By default VLAN1 owning all the ports is the Management VLAN and you can access the switch via any port on the switch. However , if another VLAN is created and set to be the Management VLAN, you may have to reconnect the management stati[...]

settings with out the right to conf igure the switch; the admin can c onfigure all the functions of the s w i t c h . The W eb management pa ges contained in this guide are subject to th e admin’s login wi t hout an y explanation. Choose the menu System → User Management → User Config to load the following p age. Figure 4-9 User Config The fo[...]

Operation: Click the Edit button of the desired entry , and you can edit the corresponding user information. After modifying the settin gs, please click the Modify button to make the modification effective. Access level and user status of t he current user information can’t be modified. 4.3 System T ools The System T ools function, allo wing you [...]

Figure 4-1 1 Config Backup The following entries are displayed on this screen:  Config Backup Backup Config: Click the Backup Config button to save the current configuration as a file to your computer . Y ou ar e suggested to ta ke this measur e before upgrading. Note: It will take a few minutes to backup the configuration. Pleas e wait without [...]

4. After upgrading, the devic e will reboot automatically . 5. Y ou are suggested to backup t he configuration before upgrading. 4.3.4 System Reboot On this page you can reboot the switch and return to the login page. Please save the current configuration before rebooting to avoi d losing the confi guration unsaved. Choose the menu System → Sy st[...]

Choose the menu System → Access Security → Access Control to load the following page. Figure 4-15 Access Control The following entries are displayed on this screen:  Access Control Config Control Mode: Select the control mode for users to log on to the W eb management page.  Disable ： Disable the access control function.  IP-based: S[...]

Port: The field can be available for c onfigur ation only when Port-based mode is selected. Only the users connected to these port s you set here are allowed for login.  Session Config Session Timeout: If you do nothing with the Web management page within the timeout time, the system will log out automatically . If you want to reconfigure, pl ea[...]

Figure 4-16 SSL Config 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 [...]

an insecure network environment. It can encry pt all the transmission data and prevent the information in a remote management being leaked. Comprising server and client, SSH has two versi ons, V1 and V2 which are not compatible with each other . In the communication, SSH server and client can auto-negotia te the SSH version and the encryption algor[...]

 Key Download Key T ype: Select the type of SSH key to download. The switch supports three types: SSH-1 RSA, SSH-2 RSA and SSH-2 DSA. Key File: Select the desired key file to download. Download: Click the Download button to download the desired key file to the switch. Note: 1. Please ensure the key length of the downloaded file is in the range o[...]

Application Example 2 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. Select the key type and key length, and generate SSH key . Note: 1. The key len gth is in the range of 256 to 3[...]

2. On the W eb manageme nt page of the switch, download the public key file saved in the computer to the switch. 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 f ile to SSH client software. 28[...]

29 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. 4. After successful authent ication, please enter t he login user name. If y ou log on to the switch without entering password, it indicates t hat the key has been successfully downloaded. 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[...]

Port: Displays the port numbe r . Description: Give a description to the port for identification. Statu 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 Duplex mode for the port. The device connected to the switch s hould be in the same S peed an[...]

Figure5-2 Mirror Group List The following ent ries are displaye d on this screen:  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 ports. Operation: Click Edit to configure the mirror group. Click Edit to display the f[...]

Figure 5-3 Port Mirror Config The following ent ries are displaye d on this screen.  Mirror Group Number: Select the mirror group number you want to configure.  Mirroring Port Mirroring Port: Select a port from the pull-down list as the mirroring port. When Disable is selected, the Port Mirror feature will be disabled.  Mirrored Port Port [...]

Egress: Select Enable/Disable the Egress feature. When the Egress is enabled, the outgoing packets sent by the mirrored port will be copied to the mirroring port. LAG: Displays the LAG number whic h the port belongs to. The LAG member can not be selected as the mirrored port or mirroring port. Note: 1. The LAG member can not be selected as the mirr[...]

Figure 5-4 Port Security The following ent ries are displaye d 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 MA[...]

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 [...]

For ward Portlist: Select the port that to be forwarded to.  Port Isolation List Port: Display the port number . Forward Portlist: Display the forwardlist. 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[...]

 Global Config LoopbackDetection Statu s: Here you can enable or dis able loopback detection function globally . Detection Interval: Set a loopback detection interval between 1 and 1000 seconds. By default, it’s 30 seconds. Automatic Recovery Tim e : T ime after which the blocked port would automatically recover to normal status. It can be set[...]

For the member po rts in an aggregation group, t heir basic configuration must be the same. The basic configuration includes STP , QoS , GVRP , VLAN , port attributes , MAC Address Learning mode and other associated settings. The further explains are following:  If the ports, which are enabled for the GVRP , 802.1Q VLAN , V oice VLAN , STP , QoS[...]

Figure 5-7 LAG T able The following ent ries are displaye d on this screen:  Global Config Hash Algorithm: Select the applied scope of Aggregate Arithmetic, which results in choosing a port to transfer the p ackets.  SRC MAC + DST MAC: When this option is selected, the Aggregate Arithmetic w ill apply to the source and destination MAC address[...]

Figure 5-8 Detail Information 5.2.2 S tatic LAG On this page, you can manually c onfigure the LAG . The LACP feat ure is disabled for the member ports of the manually added S tatic LAG . Choose the menu Sw itch ing → LAG → St atic LAG to load the following page. Figure 5-9 Manually Config The following ent ries are displaye d on this screen: ?[...]

Description: Displays the description of the 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 add ed to a LAG . If a port is the member of a LAG or is dynamically aggregated as the L[...]

Figure 5-10 LACP Config The following ent ries are displaye d on this screen:  Global Config System Priority : S pecify a System Priority for t he port. The System Priority and the Admin Key constitute the aggregation ID. A dynamic aggregation group will only be formed between por ts having the same aggregation ID.  LACP Config Port Select: C[...]

preferr ed one. If the two port pr iorities are equal; the port with smaller port number is preferred. Mode ： S pecify the LACP mode for your selected port. Statu s: Enable/Disable the LACP feat ure for your selected port. LAG: Displays the LAG number which the port belongs to. 5.3 T raffic Monitor The T raffic Monitor function, monitoring the tr[...]

Refre sh Rate: Enter a value in seconds to specify the refresh interval.  T raffic Summary Port Select: Click the Sele ct 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 packet s received on the port. The erro r packet s are not counted in. Pa[...]

Th e following ent ries are displaye d on this screen:  Auto Refresh Auto Refresh: Allows you to Enable/Disable refreshing the Traf fic 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 corresp[...]

5.4 MAC Address The main function of the switch is forwarding the packe ts to the correct ports base d on the destination MAC address of the packets. Address T able contains the port-based MAC address information, which is the base for the switch to forward packet s quickly . The entries in the Address T able can be updated by auto-lear ning or con[...]

Figure 5-13 Address T able The following ent ries are displaye d on this screen:  Search Option MAC Address: Enter the MAC address of your desired entry . VLAN ID: Enter the VLAN ID of your desired entry . Port: Select the corresponding port number of your desired entry . Ty p e : Select the type of your desired entry .  All: This option allo[...]

 Address T able MAC Address: Displays the MAC address learned by the switch. VLAN ID: Displays the corresponding VLAN ID of the MAC address. Port: Displays the corresponding Port number of the MAC address. Ty p e : Displays the T ype of the MAC address. Aging St atus: Displays the Aging status of the MAC a ddress. 5.4.2 S tatic Address The stati[...]

 Search Option Search Option: Select a Search Option from the pull-down list and click the Search button to find your desired entry in the S tatic Address T able.  MAC Address: 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 . [...]

Figure 5-15 Dynamic Address The following ent ries are displaye d on this screen:  Aging Config Auto Aging: Allows you to Enable/Disable t he Auto Aging feature. Aging Time: Enter the Aging T ime for the dynamic address.  Search Option Search Option: Select a Search Option from the pull-down list and click the Search button to find your desir[...]

 Dynamic Address T able Select: Select the entry to delete the dynamic address or to bind the MAC address to the corresponding port statically . It is multi-optional. MAC Address: Displays the dynamic MAC address. VLAN ID: Displays the corresponding VLAN ID of the MAC address. Port: Displays the corresponding por t number of the MAC address. Ty [...]

53 The following ent ries are displaye d 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 from the pull-down list and click the Search button to find your desired entry in the Filtering [...]

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[...]

VLANs. The switch can analyze the received unt agged p ackets on the port and match the p ackets with the Protocol VLAN and 802.1Q VLAN in turn . If a packet is matched, the switch will add a corresponding VLAN tag to it and forward it in the corresponding VLAN. 6.1 802.1Q VLAN VLAN tags in the packet s are necessary for the sw itch to identify pac[...]

（ 2 ） TRUNK : The TRUNK port can be added in multiple VL ANs, and the egress rule of the port is T AG . The TRUNK port is generally used to conn ect the cascaded network devices for it can receive and forward the packets of multiple VLANs. When the p ackets are forwarded by the TRUNK port, it s VLAN tag will not be changed. （ 3 ） GENERAL: T[...]

IEEE 802.1Q VLAN functi on is implemented on the VLAN Config and Port Config p ages. 6.1.1 VLAN Config On this page, you can view the current created 802.1Q VLAN. Choose the menu VLAN → 802.1Q VLAN → VLAN Config to load the following page. Figure 6-3 VLAN T able T o ensure the normal communication of the factory sw itch, the default VLAN of all[...]

Figure 6-4 Create or Modify 802.1Q VLAN The following ent ries are displaye d on this screen:  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 but[...]

Egress Rule : Select the Egress Rule for the VLAN port member . The default egress rule is UNT AG .  T AG: All packets forwarded by the port are t agged. The packet s contain VLAN information.  UNT AG: Packets forwarded by the port are untagged. LAG: Displays the LAG to which the port belongs. 6.1.2 Port Config Before creating the 802.1Q VLAN[...]

Link T ype: Select the Link T ype from t he pull-down list for the port.  ACCESS: The ACCESS port c an be added in a single VLAN, and the egress rule of the port is UNT AG . The PVID is same as the current VLAN ID. If t he current VLAN is deleted, the PVID will be set to 1 by default.  TRUNK: The TRUNK port can be added in multiple VLANs, and[...]

Ste p Operation Description 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 a nd the description for the VLAN. Meanwhile, specify its member ports. 3 Modify/View VLAN. Optional. On the VLAN → 802.1Q VLAN → VLAN Config pa ge, click the Edit/Det ail button to m[...]

3. If the Protocol VLAN is created, pleas e set its enabled port to be the member of corresponding 802.1Q VLAN so as to ensure the packets forwarded normally. 6.2.1 Protocol VLAN On this page, you can create Protocol VLAN and view the information of the current defined Protocol VLANs. Choose the menu VLAN → Protocol VLAN → Protocol VLAN to load[...]

Figure 6-8 Create and V iew Protocol T emplate The following ent ries are displaye d 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.[...]

Figure 6-9 Enable Protocol VLAN for Port Port Enable: Select your desired port for Protocol VLAN feature. All the ports are disabled by default. 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[...]

 GARP GARP provides the mechanism to assist the switch members in LAN to deliver, propagate and register the information among t he members. GARP itself does not work as the entity among the devices. The application complied with GARP is called GARP im plementation, and GVRP is the implementation of GARP. When GA RP is implemented on a port of d[...]

including VL AN members, ports through which t he VLAN members can be reached, and so on. The switch also propagates the local VLAN registrati on information to other sw itches so that all the switching devices in the same switched network can have the same VLAN information. The VLAN registration information includes not only the static registratio[...]

Note: If the GVRP feature is enabled for a member port of LAG , please ensure all the member ports of this LAG are set to be in the same status and registration mode. The following ent ries are displaye d on this screen:  Global Config GVRP: Allows you to Enable/Disabl e the GVRP function.  Port Config Port Select: Click the Select button to [...]

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 of the port to be TRUNK. 2 Enable GVRP function. Required. On the VLAN → GVRP page, enable GVRP function. 3 Configure the registration mode and the timers for the port. Required. On the V[...]

Ste p Operation Description 2 Create VLAN10 ge, create a Required. On VLAN → 802.1Q VLAN → VLAN Config pa VLAN with its VLAN ID as 10, owning Port 2 and Port 3. 3 Create VLAN20 e, create a VLAN with its VLAN ID as 20, owning Port 3 and Port 4. Required. On VLAN → 802.1Q VLAN → VLAN Config pag  Confi B gure Switch S te p Operation Descrip[...]

 Configuration Procedure n h A  Co figure Switc S te p Operation Description 1 ype of the rt 13 as ACCESS, and configure the link type Configure the Link T ports Required. On VLAN → 802.1Q VLAN → Port Config page, configure the link type of Port 1 1 and Po of Port 12 as GENERAL. 2 Create VLAN10 12 and Port 13, and Required. On VLAN → 80[...]

Chapter 7 S p anning T r ee STP (S panning T ree P rotocol), subject to IEEE 802.1 D standard, is to disbranch 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[...]

 Port: Port 3 is the root port of switch B and port 5 is the root port of switch C; port 1 is the designated port of switch A and por t 4 is the designated port of swit ch B; port 6 is the blocked port of switch C. 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 sen[...]

 STP Generation  In the beginning In the beginning, each switch regards itself as the root, and generates a configuration BPDU for each port on it as a root, with the root path cost being 0, the ID of the designated bridge being that of the switch, and the designated port being itself.  Comparing BPDUs Each switch sends out configur ation [...]

Tips ： In an STP with st able topology , only the ro ot port and designated port can forward d ata, and the other ports are blocked. The blo cked ports only can receive BPDUs. RSTP (R apid S p annin g T ree Pro tocol) , evo lved f rom t he 802 .1D STP standard, enable Ethernet ports to transit their states rapidl y . The premises for the port in [...]

Figure 7-2 Basic MSTP diagram  MSTP MSTP divides a network into several MST r egions. The CST is generat ed betwee n these MST regions, and multiple spanning trees can be gener ated in each MST region. Each spanning tree is called an instance. As well as STP , MSTP us es BPDUs to generate sp anning tree. The only difference is that the BPD U for[...]

Figure 7-3 Port roles The S panning T ree module is mainly for spanning tree configuration of the switch, including four submenus: STP Config , Port Config , MSTP Inst ance and STP Security . 7.1 STP Config The STP Config function, for global configuration of spanning trees on the switch, can be implemented on STP Config and STP Summary pages. 7.1.[...]

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

Max Hop s: Enter a valu e from 1 to 40 to set the maximum number of hops that occur in a specific region before the BPDU is discarded. The default value is 20 hops. Note: 1. The forward delay parameter and the network diameter are correlated. A t oo small forward delay parameter may result in temporary loops. A too large forward delay may cause a n[...]

Figure 7-5 STP Summary 7.2 Port Config On this page you can c onfigure the parameters of t he ports for CIST Choose the menu Sp anning T ree → Port Config to load the following page. 79[...]

Figure 7-6 Port Config The following entries are displayed on this screen:  Port Config Port Select: Click the Select button to quick-select the corresponding p ort 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 Enab[...]

 Designated Port: Indicates the port that forwards packets to a downstream network segment or switch.  Master Port: Indicates the port that connects a MST region to the common root. The path fr om the master port to the common root is the shortest path between this MST region and the common root.  Alternate Port: Indicates the por t that c[...]

Figure 7-7 Region Config The following entries are displayed on this screen:  Region Config Region Name: Create a name for MST region identif ication using up to 32 characters. Revision: Enter the revision from 0 to 65535 for MST region identification. 7.3.2 Inst ance Config Instance Configuration, a property of MST regi on, is used to describe [...]

The following entries are displayed on this screen:  Inst ance T able Inst ance ID Select: Click the Select button to quick-se lect 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 switch. Statu s: Displays th[...]

Figure 7-9 Instance Port Config The following entries are displayed on this screen:  Port Config Inst ance ID: Select the desired inst ance ID fo r its port configuration. Port Select: Click the Select button to quick-select the corresponding p ort based on the port number you entered. Select: Select the desired port to specify its priority and [...]

Note: The port status of one port in dif ferent spanning tree instances can be different. Global configuration Procedure for S panning T ree function: Ste p Operation Description 1 Make clear roles the switches play in spanning tree instances: root bridge or designated bridge Preparation. 2 Globally configure MSTP parameters Required. Enable S pann[...]

 Root Protect A CIST and its secondary root bridges are usually located in the high-bandwidth core region. Wrong configuration or malicious attacks may resu lt in configuration BPD U p ackets with higher priorities being received by the legal root bridge, which causes the cu rrent legal root bridge to lose its position and network topology jitte[...]

Figure 7-10 Port Protect The following entries are displayed on this screen:  Port Protect Port Select: Click the Select button to quick-select the corresponding p ort based on the port number you entered. Select: Select the desired port for port protect configuratio n. It is multi-optional. Port: Displays the port number of the switch. Loop Pro[...]

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 p age. Figure 7-1 1 TC Protect The following entries are displayed on this screen:  TC Protect TC Threshold:[...]

 Network Diagram  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 VLAN 101-VLAN 106. The detailed instructions can be found in the section 802.1Q VLAN . 2 Enable STP function On Sp anning T r[...]

Ste p Operation Description 3 Configur e the region name and the revision of MST region On Sp anning T ree → MSTP Inst ance → Region Config page, configure the regi on as TP-LINK and keep the default revision setting. 4 Configure VLAN-to-Instance mapping table of the MST region On S p anning T ree → MSTP Instance → Inst ance Config page, co[...]

Ste p Operation Description 2 Enable STP function On Sp anning T ree → STP Config → STP Config page, enable STP function and select MSTP version. On Sp anning T ree → STP Config → Port Config page, enable MSTP function for the port. 3 Configur e the region name and the revision of MST region On Sp anning T ree → MSTP Inst ance → Region [...]

 Enable Loop Protect function for the non-edge ports. Enable BPDU Protect function or BPDU Filter func tion for the edge ports which are connected to the PC and server . Return to CONTENTS 92[...]

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[...]

VLAN ID Multicast IP Port Figure 8-3 Multicast Address T able  IGMP Snooping In the network, the hosts apply to the near Router for joining (leaving) 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[...]

it will be added to the multicast addr ess table with it s member port ti me specified; if the receiving port is already a member port, its mem ber port time will be directly reset. 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 informat[...]

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 m ulticast, Forward or Discard.  IGMP Snooping S tatus 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 qui ck-select the corresponding port based on the port number you entered. Select: Select the desired port for IGMP Snooping feature conf iguration. It is multi-optional. Port: Displays the port of the switch. IGMP Snoo[...]

Choose the menu Multicast → IGMP Snooping → VLAN Config to load the following page. Figure 8-6 VLAN Config The following entries are displayed on this screen:  VLAN Config VLAN ID: Enter the VLAN ID to enable IGMP Snooping for the desired VLAN. Router Port Time: S pecify the aging time of the router port. Within this time, if the switch does[...]

Leave T ime: Displays the leave time of the VLAN. Router Port: 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 → IGMP[...]

Figure 8-7 Multicast VLAN The following entries are displayed on this screen:  Multicast VLAN Multicast VLAN: Select Enable/Disable Mult icast 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[...]

 Network Diagram  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 it[...]

8.2 Multicast IP In a network, receivers can join different multic ast groups appropriate to their needs. The switch forwards multicast streams based on multicast address table. The Multicast IP can be implemented on Multicast IP T able , S t atic Multicast IP page. 8.2.1 Multicast IP T able On this page you can view the multicast IP table on the s[...]

Note: If the configuration on VLAN Config p age and mult icast VLAN page is chang ed, the switch will clear up the dynamic multicast addresses in mu lticast address t able and learn new addre sses. 8.2.2 S tatic M ulticast IP S tatic Multicast IP table, isol ated from dynamic multicast group and multicast filter , is not learned by IGMP Sn ooping. [...]

 St atic Multicast IP T able Select: Select the desired entry to del ete the corres ponding static multicast IP . It is multi-optional. Multicast IP: Displays the multicast IP . VLAN ID: Displays the VLAN ID of the multicast group. Forward Port: Displays the forward port of the multicast group. 8.3 Multicast Filter When IGMP Snooping is enabled,[...]

 IP-Range T able IP-Range ID Select: Click the Select button to quick- select the corresponding IP-range ID based on the ID number you entered. Select: Select the desired entry to del ete or modify the corresponding IP-range. It is multi-optional. IP-Range ID: Displays IP-range ID. St art Multicast IP: Displays star t multicast IP of the IP-rang[...]

Action Mode: Select the a ction mode to process multicast p ackets when the multicast IP is in the filtering IP-range.  Permit: Only the multicast packets whose multicast IP is in the IP-range will be processed.  Deny: Only the multicast packets whose multicast IP is not in the IP-range will be processed. Bound IP-Range (ID): Enter the IP-ran[...]

Figure 8-12 Packet S tatistics The following entries are displayed on this screen:  Auto Refresh Auto Refresh: Select Enable/Disable auto refresh feature. Refresh Period: Enter the time from 3 to 300 in seconds to specif y the auto refresh period.  IGMP S tatistics Port Select: Click the Select button to quick-select the corr esponding port b[...]

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 packet s to different priori[...]

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[...]

The QoS module is mainly for traf fic control and priority configuration, including three submenus: DiffServ , Bandwidth Control and V oice VLAN . 9.1 DiffServ This switch classifies the ingr ess packets, map s the packet s to different 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 impleme[...]

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 Description 1 Log on to the Port Priority page 2 Select the desired ports for configuration Select the desired ports. It is multi-optional. 3 S[...]

Figure 9-7 DSCP Priority The following entries are displayed on this screen:  DSCP Priority Config DSCP Priority: Select Enable or Disable DSCP Priority .  Priority Level DSCP: Indicates the priority determined by the DS region of IP datagram. It ranges from 0 to 63. Priority Level: Indicates the priority level the packets with tag are mapped[...]

Ste p Operation Description 3 Map the DSCP priority to the priority level Required. Select DSCP priority and the corresponding priority level. 4 Select a schedule mode Required. Log on to the Schedule Mode page to select a schedule mode. 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-[...]

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 Description 1 Configure the mapping relation between the 802.1P priority T ag/CoS and the TC Required. On QoS → DiffServ → 802.1P/CoS mappi[...]

Equ-Mode: Equal-Mod e. In this mode, all the queues occupy the bandwidth equally . The weight value ratio of all the queues is 1:1:1:1. 9.2 Bandwid th Control Bandwidth function, allowing you to control the traffic rate an d broadcast flow on each port to ensure network in working or der , can be implemented on Rate Limit and Storm Control p ages. [...]

Ingress Rat e(Kbps): Configure th e bandwidth for receiving packet s on the port. Y ou can select a rate from the dropdown list or select "Manual" to set Ingress rate, the system will automatically select integral multiple of 64Kbps that closest to the rate you entered as the real Ingre ss rate. Egress Rate(Kbps): Configure the band width[...]

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[...]

configuration for voice data, ens uring the transmission priority of voice data stream and voice quality .  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 config[...]

Port V oice VLAN Mode V oice Stream T y pe Link type of the port and processing mode ACCESS: Not supported. TRUNK: Supported. The default VL AN of the port can not be voice VLAN. TA G v o i c e stream GENERAL: Supported. The defaul t VLAN of the port can not be voice VLAN and the egress rule of the access port in the voice VLAN should be T AG . ACC[...]

The following entries are displayed on this screen:  Global Config V oice VLAN: Select Enable/Disable V oice VLAN function. VLAN ID: Enter the VLAN ID of the v oice VLAN. Aging Time: S pecifies the living time of the member port in auto mode after the OUI address is aging out. 9.3.2 Port Config Before the voice VLAN function is enabled, the para[...]

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 voic e VLAN configuration. It is multi-optional. Port: Displays the port number of the switch. Port Mode: Select the mode for the po[...]

Figure 9-14 OUI Configuration The following entries are displayed on this screen:  Create OUI OUI: Enter the OUI address of the voice device. Mask: Enter the OUI address mask of the voice device. Description: Give a description to the OUI for identification.  OUI T able Select: Select the desired entry to view the detailed information. OUI: D[...]

Ste p Operation Description 4 Configure the parameters of the ports in voice VLAN Required. On QoS → V oice VLAN → Port Config page, configure the parameters of the ports in voice VLAN. 5 Enable V oice VLAN Required. On QoS → V oice VLAN → Global Config p age, configure the global parameters of voice VLAN. Return to CONTENTS 126[...]

Chapter 10 ACL ACL (Access Control List) is used to filter packet s by configuring match rules and process policies 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 you[...]

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 The following entries are displayed on this screen:  Create Time-Range Name: Enter the name of the time-ra nge for time identification. Holiday: Sel ect Ho li day y[...]

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[...]

10.2.1 ACL Summary On this page, you can view the curr ent ACLs configured in the switch. 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[...]

10.2.3 MAC ACL MAC ACLs analyze and process packet s based on a se ries of match conditi ons, which can be the source MAC addresses, destination MAC addresse s, VLAN ID, and EtherT ype carried in the packet s. Choose the menu ACL → ACL Config → MAC ACL to load the following page. Figure 10-6 Create MAC Rule The following entries are displayed o[...]

10.2.4 St andard-IP ACL S tandard-IP ACLs analyze and proces s data packe ts based on a series of ma tch conditions, which can be the source IP addresses and destination IP addresses carried in the packets. Choose the menu ACL → ACL Config → St andard-IP ACL to load the following page. Figure 10-7 Create S tandard-IP Rule The following entries [...]

Figure 10-8 Create Extend-IP Rule The following entries are displayed on this screen:  Create Extend-IP ACL ACL ID: Select the desired Extend-I P ACL for configuratio n. 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 Packe ts. S[...]

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, QoS remarking and redirect. The Policy Config can be implemented on Polic y Summary , Police Create and Action Create pages. 10.3[...]

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 follo w ing p age. Figure 10-1 1 Action[...]

S-Condition : Select S-Condition to limit the transmission rate of the data packet s in the policy .  Rate: S pecify the forwarding rate of the data packe ts those match the corresponding ACL.  Out of Band: Specify the disposal way of the data packets those are transmitted beyond the rate. Redirect: Select Redirect to change the forwarding di[...]

10.4.2 Port Binding On this page you can bind a policy to a port. Choose the menu ACL → Policy Binding → Port Binding to load the following p age. 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 [...]

 VLAN-Bind Config Policy Name: Select the name of the po licy you want to bind. VLAN ID: Enter the ID of the VLAN you want to bind.  VLAN-Bind T able Index: Displays the index of the binding policy . Policy Name: Displays the name of the binding p olicy . VLAN ID: Displays the ID of the VLAN bound to the corresponding policy . Direction: Disp[...]

 Network Diagram  Configuration Procedure Ste p Operation Description 1 Configure T ime-range On ACL → Time-Range p age, create a time-range named work _time. Select Week mode and configure the w eek time from Monday to Friday . Add a time-slice 08:00~18:00. 2 Configure for requirement 1 On ACL → ACL Config → ACL Create page, create ACL[...]

Ste p Operation Description 3 Configure for requirement 2 and 4 On ACL → ACL Config → ACL Create page, create ACL 100. On ACL → ACL Config → St andard-IP ACL page, select ACL 100, create Rule 1, configure operatio n as Deny , configure S-IP as 10.10.70.0 and mask as 255.255.255.0, configure D-IP as 10.10.50.0 and mask as 255.255.255.0, conf[...]

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 , DoS Defend and 802.1X . Please configure the functions ap propriate to your need. 11.1 IP-MAC Binding The IP-MAC Binding function allows you to bind the IP address[...]

Th e following ent ries are displaye d 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 [...]

Figure 1 1-2 Manual Binding The following ent ries are displaye d 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 Protec[...]

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 be delivered to their destin ations 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 ent ries are displaye d on this screen:  Scanning Option St art IP Address: S pecify 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: Click the Scan button to scan the Hosts in the LAN. ?[...]

network conf iguration pr ot ocol optimized and developed basing on the BOOTP , functions to solve the above mentioned problems.  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 C[...]

Figure 1 1-6 Interaction between a DHCP client and a DHCP server （ 1 ） DHCP-DISCOVER St age: The Client broadcasts the DHCP-DISCOVER packet to find the DHCP Server . （ 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 address[...]

Option 82 c an contain 255 sub-options at most. If Option 82 is defined, at least a sub-option should be defined. This switch s upports two sub-options: Circuit ID and Remote ID. Since there is no universal standard about the content of Op tion 82, different manufacturers define the sub-options of Option 82 to their need. For this switch, the sub-o[...]

Choose the menu Netw ork Security → IP-MAC Binding → DHCP Snooping to load the following page. Figure 1 1-8 DHCP Snooping 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 ent ries are displaye d on this screen:  DHCP Snooping C[...]

Global Flo w Control: Select the value to specif y the maximum amount of DHCP messages that can be forwarded by the switch per second. The 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 Co[...]

11.2 ARP Inspection According to the ARP Implement ation Procedure s tated in 1 1.1.3 ARP Scanning , it can be found that ARP protocol can facilit ate the Hosts in t he same network segment to communicate with one another or access to external network via Gatewa y . However , since ARP protocol is implemented with the premise that all the Hosts and[...]

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 p ackets. When the Gateway tries to communicate with Ho st A in LAN, it will encapsulate this false destination MAC address[...]

Figure 1 1-1 1 ARP Attack – Cheating T erminal Hosts 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 packets. When Host B tries to communicate with Host A, it will encapsulat e this false destination MAC address for packets, [...]

Figure 1 1-12 Man-In-The-Middle Attack Suppose there are three Hosts in LAN connec ted with one another through a switch. Host A: IP address is 192.168.0.101; MAC address is 00-00-00-1 1-1 1-1 1. Host B: IP address is 19 2.168.0. 102; MAC address is 00-00-0 0-22-22-22. Attacker: IP address is 192.168.0.103; MAC address is 00-00-00-33-33-33. 1. Firs[...]

The IP-MAC Binding fun ction allows the switch to bind the IP address, MAC address, VLAN ID and the connected Port number of the Host together when the Ho st connects to the switch. Basing on the predefined IP-MAC Binding ent ries, the ARP Inspection functi ons to detect the ARP p ackets and filter the illegal ARP packet so as to prevent the networ[...]

Configuration Procedure: Ste p Operation Description 1 Bind the IP address, MAC address, VLAN ID and the connected Port number of the Host together . Required. On the IP-MAC Binding page, bind the IP address, MAC address, VLAN ID and the connected Port number of the Host together via Manual Binding, ARP Scanning or DHCP Snooping. 2 Enable the prote[...]

Th e following ent ries are displaye d 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 ARP Defend feature for t[...]

Figure 1 1-15 ARP S tatistics The following ent ries are displaye d 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 Tr usted Port [...]

DoS Att ack T ype Description Scan SYNFIN T he attacker sends the packet with it s SYN field and the F IN field set to 1. The SYN field is used to requ est initial connection whereas the FIN field is used to request disconnection. Therefore, the packet of this type is illegal. The switch can defend this type of illegal packet. Xmascan T he attacker[...]

 Config DoS Protection: Allows you to Enable/Dis able DoS Defend function.  Defend T able Select: Select the entry to enable the corresponding Defen d T ype. Defend T ype: Displays the Defend T ype name. Tips: Y ou are suggested to take the following furt her step s to ensure the network security . 1. It’s recommended to inspect and repair [...]

An 802.1X authentication is initia ted when a user launc hes client program on the supplicant system. Note that the client program must support the 802.1X authentication protocol. （ 2 ） Authenticator S ystem: The authenticator system is usually an 802.1X-supported network device, such as this TP-LIN K switch. It provides the phy sical or logica[...]

Figure 1 1-18 EAP-MD5 Authentication Procedure 1. A supplicant system launc hes an 802.1X client program vi a it s registered user name and password to initiate an access request through the sending of an EAPOL-S tart packet to the switch. The 802.1X client progr am then forwards the packe t to the switch to start the authentication process. 2. Upo[...]

8. The supplicant system can also terminate the authenticated state by sending EAPOL-Logof f packet s to the switch. Th e switch then changes the port state from accepted to rejected. （ 2 ） EAP T erminating Mode In this mode, packet transmission is terminated at authenticator systems and the EAP p ackets are mapped into RADIUS packets. Authenti[...]

 Guest VLAN Guest VLAN function enables the supplicant s that do not pass t he authentication to access the specific network resource. By default, all the ports connected to the supplic ants belong to a VLAN, i.e. Guest VLAN. Users belonging to the Guest VLAN can access the resources of the Guest VLAN without being authenticated. But they need t[...]

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 and the client. The EAP protocol p ackets with 　 authentication data can be encapsulated in th e advanced protocol (such as RADIUS) packets[...]

Figure 1 1-21 Port Config The following ent ries are displaye d 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 your desired port for confi guration. It is multi-optional. Port: Displays the port number . Statu s: Select Enable/Disable t[...]

Authorized: Displays the authenticati on st atu s of the port. LAG: Displays the LAG to which the port belongs to. 11.4.3 Radius Server RADIUS (Remote Authentic ation Dial-In User Service) server provides the aut hentication service for the switch via the stored client information, such as the user name, password, etc, with the purpose to control t[...]

Note: 1. The 802.1X function takes ef fect only when it is enabled globally on the switch and for the port. 2. The 802.1X function c an not be enabl ed for LAG member ports. That is, the port with 802.1X function enabled can not be added to the LAG . 3. The 802.1X function should not be enabled for the port connec ted to the authentication server .[...]

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. Curr ently[...]

SNMP v1: SNMP v1 adopts Community Name authentic ation. The community name is used to define the relation between SNMP Management S tation and SNMP Agent. The SNMP packe ts failing to pass 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 [...]

The User configure d in an SNMP Group can m anage the switch via the client program on management station. The specif ied User Name and the Auth/Privacy Password are used for SNMP Management S tation to access the SNMP Agent, functioning as the p assword. SNMP module is used to configure the SNMP f unction of the switch, including three submenus: S[...]

Note: The amount of Engine ID c haracters must be even. 12.1.2 SNM P View 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 → S[...]

12.1.3 SNM P Group On this page, you can co nfigure SNMP Group to control the network access by providing the users in various groups with different management right s via the Read View , Write View and Notify View . Choose the menu SNMP → SNMP Config → SNMP Group to load the following page. Figure 12-5 SNMP Group The following ent ries are dis[...]

writing only and changes can be made to the a ssigned SNMP View . The View defined both as the Read View and the Write V iew can be read and modified. Notify V iew : Select the View to be the Notify V iew . The management station can receive notification messages of the assigned SNMP view generated by the switch's SNMP agent.  Group T able [...]

Figure 12-6 SNMP User The following ent ries are displaye d on this screen:  User Config User Name: Enter the User Name here. User T ype: Select the type for the User .  Local User: Indicates that the user is connected to a local SNMP engine.  Remote User: Indicates that the user is connected to a remote SNMP engine. Group Name: Select the[...]

 User T able Select: Select the desired entry to del ete the corresponding User . It is multi-optional. User Name: Displays the name of the User . User T ype: Displays the User T ype. Group Name: Displays the Group Name of the User . Security Model: Displays the Security Model of the User . Security Level: Displays the Security Level of the User[...]

 read-onl y: Management right of the Community is restricted to read-only, and changes cannot be made to the corresponding View.  read-write: Management right of the Comm unity is read-write and changes can be made to the correspondin g View. MIB Vie w : Select the MIB V iew for the community to access.  Community T able Select: Select the[...]

Ste p Operation Description 2 Create SNMP V iew . Required. On the SNMP → SNMP Config → SNMP View page, create SNMP V iew of the management agent. The default View Name is viewDefault and the default OID is 1. Create SNMP Community directly . 3 Configure access level for the User . Create SNMP Group and SNMP User . Required alternatively .  [...]

Figure 12-8 Notification Config The following ent ries are displaye d on this screen:  Create Notification IP Address: Enter the IP address of the management Host. UDP Port: Enter the number of the UDP por t used to send notifications. The UDP port functions with the IP address for the notification sending. The default is 162. User: Enter the Us[...]

 Notification T able Select: Select the desired entry to delete the corresponding management station. IP Address: Displays the IP address of the management host. UDP Port: Displays the UDP port us ed to send notifications. User: Displays the User name of the management station. Security Model: Displays the Security Model of the management statio[...]

The RMON Groups can be configured on the Histor y Control, Event Con fig and Alarm Config pages. 12.3.1 Histor y Control On this page, you can confi gure the History Group for RMON. Choose the menu SNMP → RMON → History Control to load the following page. Figure 12-9 History Control The following ent ries are displaye d on this screen:  Hist[...]

Figure 12-10 Event Config The following ent ries are displaye d on this screen:  Event T able Select: Select the desired entry for configuration. Index: Displays the index number of the entry . User: Enter the name of the User or the community to which the event belongs. Description: Give a description to the event for identification. Ty p e : S[...]

Figure 12-1 1 Alarm Config The following ent ries are displaye d 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 sam[...]

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 management 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 ne[...]

Figure 13-1 Global Configuration The following ent ries are displaye d 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 th e T r[...]

Figure 13-2 Port Configuration The following ent ries are displaye d 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: Neit[...]

Figure 13-3 Local Information The following ent ries are displaye d on this screen:  Auto Refresh Auto Refresh: Enable/Disable the aut o refresh function. Refresh Rate: S pecify the auto 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 [...]

Th e following ent ries are displaye d on this screen:  Auto Refresh Auto Refresh: Enable/Disable the aut o refresh function. Refresh Rate: S pecify the auto refresh rate.  Neighbor Info Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Local Port: Displays the local port number [...]

Figure 13-5 Device S tatistics The following ent ries are displaye d on this screen:  Auto Refresh Auto Refresh: Enable/Disable the aut o refresh function. Refresh Rate: S pecify the auto 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 [...]

Receive T ot al: Displays the number of LLDPDUs received b y this port. Discards: Displays the number of L LDPDUs 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 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 switch.  After being removed from the cluster , the mem ber switch becomes to be the candidate switch.  The commander switch becomes to be the candidat e s[...]

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. Remote Port: Displays the port numb[...]

Figure 14-3 NDP Summary The following entries are displayed on this screen:  Global Config NDP: Displays the global NDP st atus (enabled or di sabled) 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 packets.  Port St atus Port: Dis[...]

Det ail ： Click the Detail button to view the complete information collected for the port. 14.1.3 NDP Config On this page you can configure the NDP function for the switch. 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: Se[...]

NDP: Displays ND P status of the current port. Enable: Click the Enable button to enable NDP for the port you select. Disable: Click the Disable button to disabl e NDP for the port you select. Note: 1. NDP function is ef fective only when NDP function is enabled globally and for the port. 2. The aging time should be set over the hello time value, o[...]

 Device T able Device T ype: Displays the device description collected through NTDP . Device MAC: Displays the MAC address of this device. Cluster Name: Displays the cluster nam e of this device. Role: Displays the role this device plays in the cluster .  Commander: Indicates the dev ice that can configure and manage all the devices in a clus[...]

Figure 14-7 NTDP Summary The following entries are displayed on this screen:  Global Config NTDP: Displays the NTDP status (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 sw itch topology collect s. NTDP Hop Delay: Displays the time[...]

 Port St atus Port: Displays the port number of the switch. NTDP: Displays NTDP status (enabled or disabled) of the current port. 14.2.3 NTDP Config On this page you can configure NTDP globally . Choose the menu Cluster → NTDP → NT DP Config to load the following page. Figure 14-8 NTDP Config The following entries are displayed on this scree[...]

NTDP Hop s: Enter the hop count the switch topology collects. The default is 3 hops. NTDP Hop Delay: Enter the time between the switch receiving NTDP request packet s and the switch forwarding NTDP request packet s for the first time. Th e default is 200 milliseconds. NTDP Port Delay : Enter the time between the port forwarding NTDP request packets[...]

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

Cluster Role: Displays the role the switch plays in the cluster . 14.3.2 Cluster Config On this page you can configure the sta tus of the cluster the switch belongs to. Choose the menu Cluster → Cluster → Cluster Config to load the following page.  For a candidate switch, the following page is displayed. Figure 14-12 Cluster Configur ation f[...]

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

 Network Diagram Figure 14 -15 Network diagram  Configuration Procedure  Configure the member switch Ste p Operation Description 1 Enable NDP function on the switch and for port 1 On Cluster → NDP → ND P Config page, enable NDP function. 2 Enable NT DP function on the switch and for port 1 On Cluster → NTDP → N TDP Config p age, en[...]

Ste p Operation Description 4 Configure the member switch On Cluster → Cluster → Member Config page, select the member switch and click the Manage button to log on to its W eb management page. Or On Cluste r → Cluster → Cluster T opology page, double-click the switch icon to view its detailed information; click the switch icon and click the[...]

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[...]

C lick the Monitor button to enable the switch to monitor and display its CPU utilization rate every four seconds. 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 utilizatio[...]

informational 6 Informational messages debugging 7 Debug-level messages T able 15-1 Log Level 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 [...]

15.2.2 Local Log Local Log is the log information saved in switch. By default, all system logs are saved in log buffer and the logs with severities from level_0 to level _4 are saved in log file meanwhile. On this page, you can set the output channel for logs. Choose the menu Maintenance → Log → Local Log to load the following page. Figure 15-4[...]

Figure 15-5 Log Host The following ent ries are displaye d on this screen:  Log Host Select: Select the desired entry to configure the corresponding 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 infor[...]

Figure 15-6 Backup Log The following ent ry is displayed on this screen:  Backup Log Backup Log: Click the Backup Log button to save the log as a file to your computer . Note: It will take a few minutes to backup the l og file. Please wait without any operation. 15.3 Device Diagnostics This switch provides Cable T est and Loopback functions for [...]

Pair: Displays the Pair number . Statu s: Displays the connection status of the cable connected to the port. The test results of the cable in clude normal, close, open, short, impedance or unknown. Length: If the connection status is normal, here displays the length range o f the cable. Error: If the connection status is close, open or impedanc e, [...]

 Loopback Port Loopback Port: Select the desired port for loopback test. T est: Click the T est button to start the loopback test for the port. 15.4 Network Diagnostics This switch provides Ping test and T racer t test functions fo r network diagnostics. 15.4.1 Ping Ping test function, testing the connectivit y between the switch and one node of[...]

15.4.2 T racert T racert test function is used to test the connecti vity of the gateways during its journey from the source to destination of the test data. When ma lfunctions occur to the network, you can locate trouble spot of the network with this tracert test. Choose the menu Maintenance → Netw ork Diagnostics → T racert to load the followi[...]

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[...]

Figure 16-2 Open Hyper T erminal 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 Connection Description 3 ） Select the port to connect in Figure 16-4 and click OK . 220[...]

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 . Configure Bits per second as 38400, Dat a bit s as 8, Parity as None, Stop bi ts as 1, Flow control as None, and then click OK . Figure 16-5 Port Settings 3. Download Firmware via booUtil menu T o download firmware to the[...]

Figure 16-6 bootUtil Menu As the prompt is displayed for a short time, you are suggested not to release the CTRL-B key until you enter into bootUtil menu after powering on the switch. 3 ） After entering into bootUtil menu, please firstly confi gure the IP parameters of the switch. The format is: ifconfig ip xxx.xxx.xxx.xx x mask 255.255.255.0 gat[...]

St art . . . . . . . . ◀ * * * * * * * * * * * * * * * * * * User Access Login * * * * * * * * * * * * * * * * * User: When you forget the login user name and passwor d, you can enter reset command after entering into bootUtil menu to reset the system. The system will be restored to the factory default settings, and the default login user nam e a[...]

Appendix A: Specifications IEEE802.3 10Base-T Ethernet IEEE802.3u 100Base-TX/100Bas e-FX Fast Ethernet 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 H[...]

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) [...]

Figure B-2 5) The following TCP/IP Properties window will display and the I P Address t ab is open on this window by default. 226[...]

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 255.255.255.0. Now: Click OK to save your settings. Return to CONTENTS 227[...]

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-SL3428 works as the authenticator system, please take the following instructions to install the TpSupplicant provided on the[...]

Figure C-3 Welcome 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 De stination 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 Program 6. The InstallShield Wizard is inst alling 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. 230[...]

Figure C-7 InstallShield Wizard Complete Note: Please pay attention to the ti ps on the above screen. If you have not installed WinPcap 4.0.2 or the higher version on your computer , the 802.1X Client Softwa re TpSupplicant can not work. It’ s recommended to go to http://www .win pcap.org to download 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 Uninstall the Application 4. Click Finish to complete. Figure C-1 1 Uninstall Complete 1.3 Configuration 1. After completing inst all[...]

Figure C-12 TP-LINK 802.1X Client Enter the Name and the Password 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-12 to lo ad the following screen for configuring the connection properties. Figure C-13 Connection Properties Send 802.1X protocol p[...]

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 Radius server is being searched. Figure C-14 Authentication Dialog 4. When passing the authentication, the following screen will appear . Figure C-15 Successfully Authenticated 5. Double click the icon [...]

A1: It’s because the supported DLL file is missing. Y ou are suggested to go to http://www .winpcap.org to download WinPcap 4.0.2 or the higher version f or installation, and run the client software again. Q2: Is this TP-LINK 802.1X Client Software compliable with the switches of the other manufacturers? A2: No. This TP-LINK 802.1X Client Softwa [...]

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[...]

Generic Multicast Regis tration Protocol (GMRP) 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 gen[...]

La yer 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[...]

239 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[...]