Cisco Systems DGS-1224T manuale d’uso

D-Link DGS-1224T 24-Port 10/100/1000Mbps Gigabit Ethernet Switch + 2-Port mini GBIC Web-Smart Switch User’s Guide First Edition Building Netw orks f or Peopl e[...]

i TABLE OF CONTENTS About This Guide................................................................................. 1 Purpose ............................................................................................ 1 Terms/Usage .................................................................................... 1 Introduction................[...]

ii Installing the Smar tConsole Utility................................................ 17 SmartConsole Utility Features ....................................................... 18 Menu Toolbar............................................................................. 18 Discovery List ..............................................................[...]

iii Security > Mac Address Table > Sta tic MAC............................ 52 Security > Mac Address Table > Dynam ic Forwarding Table .. 53 Monitoring > Statistics ............................................................... 54[...]

1 ABOUT THIS GUIDE Congratulations on your purchase of the DGS-1224T 24 -Port 10/100/10 00Mbps Gi gabit Ether net + 2-Por t Mini GB IC Web-Smart Switch. This device integrates 100 0Mbps Gigabit Et hernet, 100Mbp s Fast Ethernet and 10 Mbps Ethernet network capabilities in a highly flexible package. Purpose This guide disc usses how to install and u[...]

2 INTRODUCTION This chapter descr ibes the featur es of the DGS-1224T an d provides some background information abou t Ethernet/Fast Ethernet/Gigabit Ethernet switching technology. Gigabit Ethernet Technology Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing the same packet structure, form at, and sup port for C SMA/CD pr otocol, fu[...]

3 In addition, the phenomenal bandwid th delivered by Gigabit Ethernet is the most cost-e ffective m ethod to tak e advantage of to day and tomorrow’s rapidly improvin g switchin g and rout ing inter networking technologies. And with expected advan ces in the co ming ye ars in silicon technolog y and digital signal processing that will enable Gig[...]

4 Switching Technology Another a pproach to p ushing beyo nd the lim its of Ethe rnet technology is the develo pment of swi tching technol ogy. A switc h bridges Ethernet packets at the MAC address level of the Et hernet protoc ol transmitting a mong connec ted Ethernet or Fast Ethernet L AN segments. Switching is a cost-effective way of increasing[...]

5 so broadcast and multicast traffic use val uable network ban dwidth more efficiently. Additional VLAN benefits include: Security: Security is increased with the redu ction of opportunity in eavesdropping on a broadcast n etwork because data will be switched to only those confid en tial users within the VLAN. Cost Reduc tion: VLANs can be used to [...]

6 ♦ Supports Static MAC setting ♦ D-Link Safeguard Engine supp ort ♦ Supports Simple Netw ork Managem ent Protocol (SNMP) ♦ MIB support for: RFC121 3 MIB I I, Private MIB ♦ Supports DHCP client ♦ Supports Port -sett ing for Spe ed and Flow c ontrol ♦ Easy configurat i on via Web Browser 　 ♦ Easy setting via Web Management Utility [...]

7 Flas h Memo ry Prom 2M By tes Port Functions LAN - 24 x 10/100/1000BaseT ports - Compliant with the following standards: IEEE 802.3 compliance 1. IEEE 802.3u compliance 2. IEEE 802.3ab compliance 3. Supports Full-Duplex operations at 10/100Mbps, and 1000Mbps only on SFP ports 4. IEEE 802.3x Flow Control support for Full-Duplex mode Combo ports in[...]

8 Reset button on the back panel A factory reset button x 1 Physical & Environment AC input 100-240 VAC, 50 /60 Hz Internal uni versal power s upply Operation Temperature 0-40°C Storage Temperature -10-70°C Humidity Operation: 10%-90% R H Storage: 5% ~ 90% RH Power consumption 35.1(watts) Heat Dissipation 119.69 (bt u/ hr ) MTBF 155456 (hou r[...]

9 UNPACKING AND INSTALLATIO N This chapter provides unpack ing and installation in formation for the Web-Smart Switch. Unpacking Carefully un pack the conte nts of the We b-Smart Switch packagi ng and locate the following items: One DGS-1224T Web- Smart Switch One AC power cord, su itable for th e local electrical power voltage requirements Four ru[...]

10 • Ins tall the Sw itch in a si te free from strong electromagneti c field generat ors (such as m otors), vib ration, dust, a nd direct exposure to sunligh t. • Leave at least 10cm of spa ce to the front and re ar of the Switch for ventilation. • Install the Switch on a sturdy , level surface that can support its weight, or in an E IA stand[...]

11 Figure 2 – Attach the mounting br ackets to the Sw itch Use the screws pr ovided with t he equipment rack o r chassis to mount the Switch in the rack. Figure 3 – Mount the Switch in the rack or chassis Connecting Network Ca ble The Switch suppo rts 1000Mbps Giga bit Ethernet that can operate in Auto-negot iate mode, an d 10Mbps Ethe rnet or [...]

12 AC Power The Switch utilizes an AC power supply of 100-240V AC, 50-6 0 Hz. The power switch is located at the rear of the Switch adjacent to the AC power connector and the system fan . The switch’s power supp ly will adjust to the local power source automatically and may be turned on without ha ving any or all LAN segm ent cables connect ed.[...]

13 IDENTIFYING EXTERNAL COMP ONENTS This chapter describes the front pa nel, rear pa nel, and LED i ndicators of the Switch. Front Panel The figure below shows the front panel of the Switch. Figure 4 – Front panel of the 24-port Web-Smart Switch LED Indicator: Comprehensiv e LED indicat ors display t he status of the switch a nd the network (see [...]

14 Rear Panel Figure 5 – Rear panel of the Switch Reset button: The Reset button resets all configuration settings back to the factory default. Note: Be sure that to reco rd all custom settings of the Switch before pressing the reset button . Resetting the Switch back to factory default settings will erase all custom configurations. AC Power Conn[...]

15 UNDERSTANDING LED INDI CATORS The front pa nel’s LED Indi cators provide i nstant status feedbac k, which help m onitoring and troubl eshooting LAN issues if needed. Figure 6 – LED indicators of the Switch Power and System LEDs Location LED Indicative Color Status Description Solid Light Power is On Power Green Light off Power is Off Blinkin[...]

16 Blinking When there is reception or transmission (or Activity) of data in any port Light off No link detected Green Solid Light When there is a secure connection (or link) to 1000Mbps device in a port Amber Solid Light When there is a secure connection (or link) to 100Mbps device in any of the ports Speed Off Light off Possible link at 10M or no[...]

17 CONFIGURATION Through a web brow ser, the features and func tions of the DGS-1224T Switch can be config ure d for optimum use. Supported web browsers The embedded Web-based Utility currently suppo rts the following web browser s : • Microsoft Int e r net Expl orer ver. 6. 0, 5.5 • Mozilla ver. 1.7.12, 1.6 • Firefox ver. 1.5, 1.0. 7 • Net[...]

18 SmartConsole Utility Features The SmartConsole Utility is divided into four parts, a Menu Toolbar of functi ons at the to p, Discovery List , Monitor List , and Device Setting . Figure 7 – SmartConsole Utility Menu Toolbar The Menu Toolbar in the SmartConsole Utility has four main tabs, File, View, Option, and Help. File includes: Monitor s av[...]

19 • Exit: To exit the SmartConsole Utility. View includes: View log and Clear Log functions, wh ich provide trap setting list operations. • View Log: To show the event of the SmartConsole Utility and the device. • Clear Log: To clear all log entries. Option includes: Refresh Time and Grou p Timer functions. • Refresh time refreshes t he mo[...]

20 Help includes: information Abou t the SmartConsole Utility, such as the software ve rsion. Discovery List This is the list where all Web- Smart devices on t he networ k are discovered. By pressing the Disc overy button, all the Web-Smart devices are listed in the discov ery list. Double click or press the Add to monitor list button to select a d[...]

21 Definitions of the Monitor List functi ons and terms: S: Shows the sy stem sym bol of the Web-Sm art device, represents the device system is inactive. IP Address: Shows the cu rrent IP ad dress of th e device . MAC Address: Shows the device MAC Address. Protocol versi on: Shows the version of the Utility protocol. Product Name: Shows the device [...]

22 The symbol “ ” represents a new trap signal, and will disappear after the event record is reviewed (clicked). Figure 9 – Trap information Note: To receive T rap information, the switch m ust be configured with Trap IP and Trap Events, ava ilabl e from the Trap Setting m enu. Add Item: Adds a devi ce to the Monit or List manuall y, by enter[...]

23 Figure 10 – Configuration Setting Password Chan ge: To change the pa ssword, fill in the new and original passwor d, and pre ss “Set” . Figure 11 – Password Change This space has been intenti onally reserved for notes:[...]

24 Firmware Upgrade: When the device firmware is be upgraded, enter the Firmware path and pass wo rd (if necessary) to update. Figure 12 – Firmware Upgrade Web Access: Double click the device in the Monitor List or select a device in the Monitor List and press t he “Web Access” button to ope n the Web-based Utility. To see the list of web bro[...]

25 Web-based Utility The DGS-1224T Web-Smart Switch has a web br owser GUI interface for configuri ng the Swit ch through a web browser. To see the list of web browsers the Web-based Utility supports, see Supported we b browsers on page 20. A network administrato r can manage, control and monitor the Switch from a PC on the lo cal LAN. This section[...]

26 When the following dialog appears, (the actual IP a ddress will correspond with the IP address of the Switch), enter the defau lt password "admin" and press OK to enter the main Web-based Utility. Figure 15 – Log in screen After entering the password, the main page of the Web-based Utility displays the status of the Swit ch. In the t[...]

27 Tool Menu The Tool Menu offers glo bal function cont rols such as Reset, Configuri ng Backup and Res toration, Firm ware Backup and Upload, and System Reboot. Figure 17 – Tool Menu Reset: Provides a safe reset option for the Switch. Figure 18 – Tool Menu > Reset Configure Backup and Restore : Allows the current configuratio n settings to [...]

28 Figure 19 – Tool Menu > Configure Backup and Restore Firmware Backup and Upload: Allows for the firmware to be saved , or for an existing firmware file to be uploaded to the Switch. Figure 20 – Tool Menu > Firmware Backup and Upload[...]

29 System Reboot: Provides a safe way to reboot the system . Figure 21 – Tool Menu > System Reboot Setup Menu When the Web-based Utility appears, a Setup Menu o n t h e l e ft s i d e o f the screen provide s an organizati on of links to pages for spec ific feature and fu nction configurat ions and properties. The following sections describe i[...]

30 System > System Setting The System Setting includes IP Information and System information. By default DHCP is disabled. If DHCP is disabled, t he IP Address , Subnet Mask and Gateway can be ma nually configured. By entering a System Name and System Lo cation , the device can more easily be recognized through the SmartConsole Utility and in ot[...]

31 Enabled , enter the Destinati on IP address of the m anaging PC that will receive trap information. Figure 24 – System > Trap Setting System Event: Monit ors the sy stem’s trappi ng inform ation. Device Bootup : Traps syste m boot-up inf ormation. Illegal Lo gin: Traps e vents of incorrect pass word logins, recording the IP of the origi n[...]

32 System > Port Setting In the Port Set ting page, the status of all ports can be monitored a nd adjusted for optimu m configuration. By selecting a range of ports ( From Port and To Por t ), the Speed and Flow Control ca n be set f or all such ports, by clicki ng Apply . To refresh the information table to view the latest Link Status and Prior[...]

33 Flow Control: This setting determines if the Switch handles flow control. Set to Enable to avoid data transfer overflows. Default setting for all ports is Disable . Link Status: Reporting Down indicates the port is disconnected. Priority: Displays each port’s 802.1P Qo S priority level for received data packet ha ndling. De fault setti ng for [...]

34 string. SNMP packets fr om a station that are not aut henticated are ignored (dropped ). Figure 26 – System > SNMP Setting Enabled / Disabled: Default setting is Disabled . Click Enable, then Apply, to set Community Settings. The default c ommuni ty strings fo r the Switc h used for S NMP v.1 management access are: Public: The community wit[...]

35 events such as a port status change. The Switch ca n generate traps and send them to the trap recipien t (i.e. network a dministrator). Setting up a T rap: Select Enable , enter a Trap Name (i.e. Trap Nam e must be selected from a Communit y Name), add t he IP of the devi ce to be monitored, and choo se the event(s) to trap. The available trap E[...]

36 Configuration > Jumbo Frame By default, the Jumbo Frame function is set to Disabled . Enabling this function will allow the Switch t o receive packets sizes of up to 10,240 bytes. Figure 28 – Configuration > Jumbo Frame Configuration > 802.1Q VLAN The IEEE 802.1Q VLAN Configuration page prov ides powerful VID manageme nt functions. By[...]

37 Figure 29 – Configuration > 802.1Q VLAN > Default Setting Figure 30 – Configuration > 802.1Q VLAN > Add VID[...]

38 Figure 31 – Configuration > 802.1Q VLAN > Example VIDs Figure 32 – Configuration > 802.1Q VLAN > VID Assignments[...]

39 Configuration > Trunking The Trunki ng function e nables the casca ding of tw o or more ports for a combined lar ger bandwidt h. Up to six Tru nk groups ma y be created, each supporting up to 8 ports. Add a Trunking Name a nd select the ports to be trunke d together, and click Apply to activate the selected Trunking groups. Figure 33 – Conf[...]

40 header. IGMP snooping ca n help re du ce cluttered traffic on the LAN. With IGMP s nooping ena bled glob ally, the Web-Smart Switch will forward IP multicast traffic only to connections th at have group members attached. Figure 34 – Configuration > IGMP Snooping Configuration By default, IGMP is Disabled . If Enabled , the IGMP Global Setti[...]

41 for controlling the frequen cy of IGMP traffic on a subnet. Default is 10 seconds. Robustness Variable (1-255 sec): The Robustness Variable allows adjustment for the e xpect ed packet loss on a subn et. If a subnet is expected to be lossy, the Robu stne ss Va riable may be increased. The Robustness Variabl e can not be set zero, and SHOULD NOT b[...]

42 a group is received, a group-specific query is sent to the po rt on which the leave message is received. A timer is started wit h a time interval equal to IgsLeaveProcessInterval. If a report message is receive d before above timer expires, the Leave m essage is dropped. Otherwise the Leave message is either forwarded to the port. Default is 1 s[...]

43 To view the Multicast Entry Table for a given VLAN, press the View button. Figure 36 – Configuration > IGMP Multicast Ent r y Table[...]

44 Configuration > 802.1D Spanning Tree 802.1D Spa nning Tree P rotocol ( STP) impl ementation is designed t o prevent net work loops t hat could ca use a broadcast storm. Whe n physical links forming a loop prov ide redundancy, only a sing le path will be forwarding frames. If the link fails, STP activates a redundant link automatically. Figure[...]

45 Bridge Priority: This value between 0 and 65535 s pecifies the priority for forwarding packets: the lower the value, the higher th e priority. The default is 32768. Bridge Max Age: This va lue may be set to ensure th at old informati on does not endless ly circulate throu gh redundant pat hs in the network, preventing th e effe ctive propagation[...]

46 Path Priority: Select a value between 0 and 255 to specify the priority for a specified p ort for forwardi ng packets: the lower the value, the higher the priority. The default is 128. Configuration > Port Mirroring Port Mirro ring is a m ethod of m onitoring net work traffic t hat forwards a copy of each i ncoming and/or outgoing pa cket fro[...]

47 RX (receive) mode: Duplicates the data that se nd to the source and forwards it to the Ta rget Port. Both (trans mit and receive) mode: Duplicate both the data transmitted from and data send to th e so urce port, an d forwards all th e data to the assigne d Target Port . None: Turns off the mi rrori ng of the port. QoS > 802.1p Default Priori[...]

48 flooding int o the switch's C PU. This functi on helps prot ect the Web- Smart Swit ch from bei ng interrupt ed by m alicious vir uses or worm attacks. Figure 40 – Security > Safeguard Engine Security > Broadcast Storm Control The Broadcast Storm Control (BSC) feature provides the ability to control the rece ive rate of broadcasted [...]

49 Figure 41 – Security > Broadcast Storm Control Security > 802.1X Setting IEEE-802.1X prov ides a security st andard for net work access control, predominantly in W i-Fi wireless networks. 802.1X holds a network port disconnected u ntil authentication is completed. Depending o n the results, the port is either made available to the u ser,[...]

50 Figure 42 – QoS > 802.1X Setting By default, 802.1X is Disabled . To use EAP for security, select Enabled and set the 802.1X Global Setti ngs for the Radius Server and applicable authentication i nformation. Authentication Port: sets primary port for security monitoring. Default is 1812. Key: Masked passwo rd matchin g the Radius Ser ver Ke[...]

51 QuietPeriod: Sets the number of seconds that the switch remains in the quiet state following a failed au thentication exchange with the client. Default 80 seconds SuppTimeout: Sets the switch-to-client retransmission time for the EAP-request frame. Default is 12 seconds. ServerTimeout: Sets the am ount of time the switch waits for a response fro[...]

52 Security > Mac Address Table > Static MAC This page provides two distinct f eatures. The top table provides the ability to turn off auto learning Mac add ress if a port isn 't connected to an uplink Switch (i.e. DHCP Server). By default, this feature is OFF (disabled). Figure 43 – Security > Static Mac Address To initiate the rem[...]

53 Security > Mac Address Table > Dynami c Forwarding Table For each port, this table displays the Mac address of e ach packet passing through th e Switch. To add a Mac address to the Static Mac Address List, click the Add chec kbox associated with the identified packet. Figure 44 – Security > Dynamic Forwarding Table[...]

54 Monitoring > Statistics The Statistics screen displays the stat us of each port packet count. Figure 45 – Monitoring > Statistics Refresh: To renew the details collected and displayed. Clear Counter: To reset the details displayed. TxOK: Number of packets tr ansmitted succ essfully. RxOK: Number of pac kets received succes s fully. TxErr[...]

55 Figure 46 – Monitoring > Port Statistics[...]