Benutzeranleitung / Produktwartung 2226 PLUS des Produzenten 3Com
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http://www.3com.com/ www.3com.com Part No. 10015240 Rev . AA Published August 2006 Baseline Switch 2226 Plus User Guide Installationsanleitung 3C16475CS Part No.
3Com Corporation • 350 Campus Dri ve • Marlborough • MA USA 01752-3064 Copyright © 2006, 3C om Corporation. All rights rese rved. No part of this documentation may be r eproduced in any form or.
C ONTENTS A BOUT T HIS G UIDE Conventions 7 Documentation Comments 8 Produc t Registration 8 1 I NTRODUCING THE B ASELINE S WITCH Overview of the Baseline Switch 9 Features and Capabi lities 9 Autosen.
IP Setup 34 Backup Configuration 35 Restore Config uration 35 Firmware Upgrade 36 Initialize 37 Reboot 37 System Access 38 System Time 40 SNMP 40 Configuring VLANs 42 VLAN 43 Forwar ding T agged/Untag.
G LOSSARY R EGULATORY N OTICES I NDEX.
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A BOUT T HIS G UIDE This guide describes how to install your 3Com Switch and perform initial management confi gurations. This guide is intended for use by those r esponsible for installing and setting up network equipme nt; consequently , it assumes a basic working knowledge of LANs (Local Ar ea Networks).
8 A BOUT T HIS G UIDE Documentation Comments Y our suggestions are very important to us. They will help make our d ocumentation more useful to you. Please e-mail comments about this document to 3Com at: pddtechpubs_comments@3com.
1 I NTR ODUCING THE B ASELINE S WITCH This chapter pr ovides an ov erview of the featur es and capabilities of the 3Com Baseline Swit ch 2226 Plus. It also identifies the contents of the Switch package and helps you get to know the physical features of the device.
10 I NTRODUCING TH E B ASELINE S WITCH When an SFP port is in ope ration, the corresponding 1000BASE-T port is disabled. The 100 0 Mbps connections can only opera te in full duplex mode. Physical Features Figur e 1 shows the front and rear panels of the Switch.
Physical Fe atures 11 can be connected to either a 10BASE-T , or 100BASE-TX device. For each port, the speed and duplex mode (half dupl ex or full duplex for 10BASE-T and 100BASE-TX) ar e automatically de termined by the capabilities of the connected device.
12 I NTRODUCING TH E B ASELINE S WITCH 10/100BASE-TX Ports (4) Duplex Status LEDs The second and fourth (bottom) r ow of Status LEDs, which ar e colored yellow (f or duplex) or green (for module active), show the duplex status of the r elated ports: 10/100/1000BAS E-T Ports 1000BASE-T only operates in ful l duplex mode.
Physical Fe atures 13 Gigabit Comb o Ports (5) Power LED The Power LED shows the power status of the Switch. (6) Self-adhesive Pads The unit is supplied with four self-a dhesive rubber pads.
14 I NTRODUCING TH E B ASELINE S WITCH Package Contents Befor e installing and using the Switch, verify that your Switch package is complete. The Switch comes with: ■ One power cord ■ Four standar.
2 I NSTALLING THE S WITCH This chapter contain s information that you need to install and set up the Switch . It covers the following topics: ■ Befor e Y ou Begin ■ Positioning the Switch ■ Rack.
16 I NSTALLING THE S WITCH Alternatively , the Switch can be rack-mounted in a wiring closet or equipment r oom. A mounting kit, containing two mounting brackets and four scr ews, is supplied with the Switch. When deciding wher e to position the Switch, ensure that: ■ It is accessible and cables can be conn ected easily .
Rack-Moun ting or Free- Standing 17 3 Insert the two screws suppli ed in the mounting kit and fully tighten with a suitable screwdriver . Figur e 2 Rack Mounting t he Unit 4 Repeat steps 2 and 3 for the other side of the unit. 5 Insert the unit into the 19 -inch rack and secure with suitable scr ews (not provided).
18 I NSTALLING THE S WITCH If you are pl acing Switch units one on top of the other , you must use the sel f-adhesive rubber pads supplied. Apply the pads to the underside of each Swit ch, sticking one in the marked area at each corner .
Using SFP T ranceivers 19 If POST fails, try the following: ■ Power off the Switch, an d then power it on again. Check the Power LED and see if POST was successfully completed. ■ Reset the Switch. See “Resetting to Factory Defaults” on page 73 .
20 I NSTALLING THE S WITCH ■ 1000BASE-LX SFP transceiver Use this transceiver to c onnect the Switch directly to a single mode fiber -optic cable or to multi - mode fiber using a conditioned launch cable. If the SFP transceiver is faulty , it will not operate within the Switch.
Performing Sp ot Checks 21 Performing Spot Checks At frequent in tervals, you should visually check the Switch. Regular checks can gi ve you an early war ning of a possible failur e; any problems can then be attended to when there will be least ef fect on users.
22 I NSTALLING THE S WITCH.
3 C ONNECTING TO THE W EB I NTERFACE The Switch has a built-in Web interface that you can use to set the admin password, change the IP addr ess that is assigned to the Switch, and configure its advanced settings. If you only want the Switch to function as a basic layer 2 switch, you do not need to access the Web interface and configure the Switch.
24 C HAPTER 3: C ONNECTING TO THE W EB I NTERFACE The Discovery applicat ion ca n be used for detecting and connect ing to the Switch on the network. The application will launch a Web interface that provides th e user with options to configur e, modify , an d upgrade the Switch.
Logging On to the Web In terface 25 Figure 5 Discover ed Devices Screen 3 On the Discovered Devices scr een, click Baseline Switch 2226 Plus , and the n click Next . The Completing the 3Com Discovery Application screen appears. 4 Click Finish . The logon dialog box for the Web interface appears.
26 C HAPTER 3: C ONNECTING TO THE W EB I NTERFACE Navigating the We b Interface The Web interface has be en designed to enable you to easily perform advanced conf iguration tasks and vi ew informa tion about the Switch. Menu The menu is located on the left side of the Web interface.
Navigating the Web Interface 27 Ta b l e 1 lists the available items on the menu. Ta b l e 1 Available Menu Items Menu Item Description Device Summary Contains tabs that allow you to: ■ Provide a summary of the Switch’s basic settings and versions of current components.
28 C HAPTER 3: C ONNECTING TO THE W EB I NTERFACE IGMP Snooping Allows you to en able or disable IGMP snooping. IGMP Query Allows you to en able or disable IGMP query mode. Broadcast Storm Allows you to en able or disable rate limiting. Port Configur es the ports.
Navigating the Web Interface 29 Buttons Depending on th e screen that is cur rently displayed, the following butt ons may appear: ■ Apply – Click to save and apply any changes that you have made .
30 C HAPTER 3: C ONNECTING TO THE W EB I NTERFACE Accessing the Interface Without Using Discovery The Discovery app lication works by automatically de tecting th e IP address that is assigned to the Switch , and then using that address to connect to the Web interface.
4 C ONFIGURING THE S WITCH This chapter provides information on how to configure the Switch’ s advanced features. T opics include: ■ Device Summar y Information ■ Administration Sett ings ■ Co.
32 C HAPTER 4: C ONFIGURING THE S WITCH ■ Color Key Device View Contains fields that di splay the system, switch, and manage ment switch informatio n to identify the Switch.
Administra tion Settings 33 Color Key Description of the color coding. Figure 10 Color Key Administration Settings The Administra tion menu includes ei ght administration it ems: ■ IP Setup ■ Back.
34 C HAPTER 4: C ONFIGURING THE S WITCH T o determ ine the exact IP address that the Switch assigns to itse lf during auto IP configuration, check th e sticker on the base of the Switch. T his sticker contains th e MAC address and default IP address of the Switch.
Administra tion Settings 35 Figure 11 IP Settings Scr een Backup Configuration T o save the Switch c onfiguration settings: 1 Click Administratio n , then Backup Configuration on the menu. The Backup Configuration scr een appears. Figure 12 B ackup Configuration 2 Click OK.
36 C HAPTER 4: C ONFIGURING THE S WITCH 2 Click Browse to locate the backup file on your computer to r estore the configuratio n settings. 3 Click Restore to copy the configuration back to the Switch. For security purposes, restoring the configuration does not chang e the passwor d.
Administra tion Settings 37 case the upgrade process fails f o r any reason (for example, the connection betw een the computer and the Switch is lost while the new firmware is being copied to the Switch). A progr ess screen displays while the upgrade is taking place.
38 C HAPTER 4: C ONFIGURING THE S WITCH System Access Click Admin istratio n , then System Access on the menu. A screen appe ars with six system access tabs: ■ User Summary ■ Create User ■ Modif.
Administra tion Settings 39 Create User This page allows you to create a user and define the access level and passwor d for that user . Figure 16 Crea te User Screen Modify User This page allows you to modify a use r’ s access level and password.
40 C HAPTER 4: C ONFIGURING THE S WITCH Remove User T o re move a user from the Switch, click on the user name, then click Remo ve . Figure 18 Remove Use r Screen System Time Click Admin istratio n , then System Time on the menu. This scr e en allows you to set the system time.
Administra tion Settings 41 ■ SNMP Remove Summary Displays the list community access strings. Figure 20 SNMP Summary Scr een Setup Enable or disable the SNMP Agent Status. Figure 21 SNMP Setup Scr een SNMP Add This page allows you to create community strings for m anagement acce ss.
42 C HAPTER 4: C ONFIGURING THE S WITCH SNMP Remove This page allows you to r emove community strings. Figure 23 SNMP Remo ve Screen Configuring VLANs A virtual LAN (VLAN) is a collection of network nodes that share the same collision domain, regar dless of their physical location or connection point in the net w ork.
Configurin g VLANs 43 VLAN Click Device , then VLAN on the menu. A screen appears with seven tabs that include: ■ Setup ■ Modify VLAN ■ Modify Port ■ Rename ■ Remove ■ Port Detail ■ VLAN Detail Setup Use the Setup screen to create VLANs on the Switch.
44 C HAPTER 4: C ONFIGURING THE S WITCH By default, all ports belong to VLAN 1 as an untagged mem ber . How ever , the y can belong to multiple VLANs as a tagged member .
Configurin g VLANs 45 Figure 26 Modify Port Screen 1 Select a membership use. Available options for each port include (only one op tion can be associated with a single port): ■ Not a member ■ Ta g g e d ■ Untagged 2 Select a port to associat e with the membership.
46 C HAPTER 4: C ONFIGURING THE S WITCH Remove Use the Remove screen to r emove a VLAN. Figure 28 Remove Scr een 1 Enter a set of VLAN s or select all VLANs to add to the r emove list, then click Select . 2 From the list of selected VLANs choose a VLAN to remo ve, or click the Sele ct All butt on to select all the VLANs.
Configurin g VLANs 47 Figure 30 VLAN Detail Scr een Forwarding T agged/Untagged Frames Each port on the Switch is capable of passing tagged or unta gged frames.
48 C HAPTER 4: C ONFIGURING THE S WITCH Setting Up T wo VLANs on the Same Switch Figure 31 illustrates how you can set up a simple VLAN on the Switch using deskto p connections.
Configurin g VLANs 49 Figure 32 T agged VLAN Configuration T o set up the configuration sho w n in Figur e 32 , do the following: 1 Create VLAN2 on both Switch 1 and Switch 2. Y ou need not create VLAN1 since it exists by default. 2 On Switch 1, set the ports that you want to be part of VLAN2 to Untagged .
50 C HAPTER 4: C ONFIGURING THE S WITCH path is maintained between spanning tree-compliant networked devices by: ■ Disabling redu ndant paths when the main paths are operational.
Configurin g VLANs 51 IGMP Snooping This switch uses IGMP (Internet Group Management Proto col) to query for any attached hosts that want to receive a specific multicast service. It identifie s the ports containing hosts r equesting to join the service and sends data out to those ports on ly .
52 C HAPTER 4: C ONFIGURING THE S WITCH A broadcast storm is an incorr ect packet sent out on a network that causes most h osts to res pond all at once, typically with wr ong answers that start the process over again. Broadcast storms use su bstantial netw ork bandwidth and may caus e network time-outs.
Configurin g Port Settings 53 Configuring Port Settings Using the Web interface, you can configur e the speed/duplex, flow control, link aggr egation, and port mirr oring settings of each port. Y ou can also view the current connection status of each port or shut down or disable ports.
54 C HAPTER 4: C ONFIGURING THE S WITCH Detail Use the Detail tab to display detailed port setting informa tion for a p ort. Figure 38 Port Administration Detail Screen Setup Use the Setup tab to configur e the port settings. The following options are available: ■ Port State – Enables an d disables the port.
Configurin g Port Settings 55 If you modify any of these settings, click Apply to save your changes. Figure 39 Port Administration Setup Screen Speed/Duplex for 1000 Mbps Connections Y ou cannot preset the speed to 100 0 Mbps. To run a port at 1000 Mbps, you must enable autonegotiation for the por t.
56 C HAPTER 4: C ONFIGURING THE S WITCH Link Aggregation Link aggregatio n, also called “trunking”, r efers to bonding multiple po rts into a single group to effectively combine the bandwidth into a single connection or a “trunk”.
Configurin g Port Settings 57 Figure 40 Link Aggre gation Summary Screen Create Use the Create tab to add ports to a group membership. Figure 41 Link Aggr egation Create Sc reen T o create a new link aggregation group: 1 Enter a link aggregation gr oup ID in the box field.
58 C HAPTER 4: C ONFIGURING THE S WITCH T o modify a link aggregation gr oup: 1 Select the aggr egation group to modify , then click Select . 2 Select the ports to add to the goup. 3 Click Apply . Remove Use the Remove tab dele te a link aggregation grou p.
Configurin g Port Settings 59 used for receiving the BPDUs initiated by the Root Bridge. If a bridge does not get a Hello BPDU after a predetermined interval, the bridge assumes that the link to t he Root Bridg e is down.
60 C HAPTER 4: C ONFIGURING THE S WITCH Detail Use the Detail tab to display detailed spanning tree information for a port. Figure 45 Spann ing T ree Detail Screen Setup Use the Setup tab to configur e the spanning tree settings for each port. The following options are available: ■ Status – Enables and disables spanning tree for the port.
Configurin g Port Settings 61 Port Mirroring The Switch allows you to monitor traffic going in and out of a particular port. For tra ffic monitoring to work, yo u need to attach a network analyzer to one port and use it to monitor the traf fic of other ports in the stack.
62 C HAPTER 4: C ONFIGURING THE S WITCH Statistics The Switch allows you to statistics of a particular po rt. Figure 48 Port Stati stics Screen T o display statistics for a port: 1 Access the Web interface. Click Port, then Statistics on the menu. The Port St atistics Screen appears.
QoS V oIP T raffic Settin gs 63 Summary Use the Summary tab to display the glo bal settings for V oice VLAN. Figure 49 QoS V oIP Summary Screen Setup Use the Setup tab to configure the globa l settings for V oice VLAN. The following options are available: ■ V oice VLAN Status – Enable or disable V oice VLAN for the switch.
64 C HAPTER 4: C ONFIGURING THE S WITCH T o configur e the V oice VLAN settings for ports: 1 Select V oice VLAN Mode, and Security settings. 2 Select the ports you would like to apply these settings to. 3 Click Apply . Figure 51 QoS Port Setup Screen Port Detail Use the Port Detail tab to display the V oice VLAN information for selected ports.
Security 65 OUI Modify Use the OUI Modify tab to ad d to the list of Organizational Unique Id entifier . The following options are available: ■ T elephony OUI – Input a new company identifier to add to the list. ■ Description – Input a descript ion for the new company identifier .
66 C HAPTER 4: C ONFIGURING THE S WITCH to control access to RADIUS-aware devices on the network. An authentication server co ntains a database of multiple user name/password pairs with associated privilege levels for each user or gr oup that requ ire management access to a switch.
Security 67 ■ UDP port – The RADIUS server UDP port used for authen tication messages. ■ Key – Sets the RADIUS encryption key . After you have filled in the parameters, click Apply to save your changes. Figure 56 RADIUS Client Configur e Screen 802.
68 C HAPTER 4: C ONFIGURING THE S WITCH Figure 57 802. 1X Summary Screen Detail Use the Detail tab to display detailed 802.1X authentication information for a port. . Figure 58 802.1X Detail Scr een Setup Use the Setup tab to configure the 802. 1X authenticaion settings.
Security 69 ■ Auto – Requ ires a dot1x-aware client to be authori zed by the authenti cation server . Clients that are not dot1x-awar e will be denied access. ■ Force-Authorized – Fo r ce s the port to grant access to all clients, either dot1x-awar e or otherwise.
70 C HAPTER 4: C ONFIGURING THE S WITCH Figure 59 802. 1X Setup Screen Monitoring Using the W eb interface, you can display address table information and cable diagnostics.
Monitoring 71 Summary Use the Summary tab to dis p lay information on T est Result, Cable Fault Distance, or Last Update for every port on th e switch. Figure 61 Cable Diagnostic Summary Screen Diagnostics Use the Diagnostics tab to display individual port infor mation on T est Result , Cable Fault Distance, and Last Update.
72 C HAPTER 4: C ONFIGURING THE S WITCH.
5 T R OUBLESHOOTING This chapter lists some issues that you may encounter while installin g, using, and manag - ing the Switch, with suggested cours es of cor - rective action to take. If you encounter an issue that is not listed here and you cannot solve it, check the 3Com Knowledgebase at http://knowledgebase.
74 C HAPTER 5: T ROUBLESHOOTING The Switch will perform automatic IP configu - ration after you reset it. See “ Automatic IP Configuration ” on page 33 for more informa - tion. Forgotten Password If you forget the passwor d to the Web interf ace after you set it, you will need to reset the Switch to regain access.
Solving LED Issues 75 ■ If the connection is to a workstation, that the workstation's network interface is installed and configured corr ectly . ■ The correct category of cable is being used for the requir ed link speed. Category 3 cables can be used for 10BASE-T operation only .
76 C HAPTER 5: T ROUBLESHOOTING All ports appear to show continual activity . There may be broadcast storms on the net - work. Remove port connections one at a time, waiting a few seconds between e ach port.
A O BTAINING S UPPORT FOR Y OUR P RO D U C T Register Y our Product W arranty and other service benefits start from the date of purchase, so it is i mportant to register your product quickly to ensur e you get full use of the warranty and other service benefits available to you.
78 A PPENDIX A: O BTAINING S UPPORT FOR Y OUR P ROD UCT Updates you must first reg i ster your product on the 3Com Web site at http://eSupport .3com.com/ . First time users will need to apply for a user name and passwor d. A link to softwar e downloads can be found at http://eSupport.
Contact Us 79 . Country T elephone Numb er Asia, Pacific Rim T elephon e T ech nical Support an d Repair Australia Hong Kong India Indonesia Japan Malaysia New Zealand Pakistan Philippines P .
80 A PPENDIX A: O BTAINING S UPPORT FOR Y OUR P ROD UCT Country T elephone Number Latin America T elephone T echn ical Support and Rep air Antigua Bar buda Argentina L ocal Number Argentina Argentina .
B T ECHNICAL I NFORMATION Related Standards The Baseline Switch 2226 Plu s has been designed to the following standards: Environmental Physical Electrical Functional IEEE 802.3 (Ether net), IEEE 802.3u ( Fast Ether net), IEEE 8 02.3ab and I EEE 802.3z (Gigabit Ethern et), IEEE 802 .
82 A PPENDIX B: T ECHNIC AL I NFORMATION.
C S AFETY I NFORMATION Important Safety Informati on Please re fer to the safety information found in th e 3Com Switch Family Safety and Regulatory Information manual included wi th this product. Y ou can find the 3Com Switch Fami ly Safety and Regulatory Information manual on the product CD-ROM that was included with your switch.
84 A PPENDIX C: S AFETY I NFORMATION.
G LOSSARY 10BASE- T The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable. 100BASE- TX The IEEE specification for 100 Mbps Fast Ethernet over Category 5 twisted-pair cable. 1000BASE-LX IEEE 802.3z spec ification for Gigabit Ethernet over 9/125 micron cor e single-mode fiber cable.
86 G LOSSARY Category 3 Cables One of five grades of T wisted Pair (TP) cabling defined by the EIA/TIA-568 sta ndard. Category 3 is voice grade cable and can only be used in Ethernet networks (10BASE-T) to transmit data at speeds of up to 10 Mbps.
87 Full Duplex A system that allows packets to be transmitted and received at the same time and, in ef fect, doubles the potential thr oughput of a link. Half Duplex A system that allows packets to be transmitted and received , but not at the same time.
88 G LOSSARY switches) that cover a relati vely small geographic area (usually not larger than a floor or building). LANs ar e characte rized by h igh tra n smission speed s over short distances (up to 1000 metr es). Layer 2 Data Link layer in the ISO 7-Layer Data Communications Protocol.
89 Server A computer in a network that is shared by multi ple end stations. Servers provide end station s with access to shared network service s such as computer files and printer queues.
90 G LOSSARY VLAN A Virtual LAN is a collection of network no des that share the same collisi on domain regardless of their physical location or connection point in the n etwork. A VLAN serves as a logical workgroup with no physical barriers, and allows users to shar e information and resour ces as though located on the same LAN.
91 R EGULATORY N OTICES FCC Statement This equipment has b een tested and found to comply wit h the limits for a Class A digital device, pursuan t to Part 15 of the FCC Rul es. These limits are designed to provide reasonable protection against harmful interfer ence in a commeric a l environment.
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I NDEX Numbers 1000BASE-LX 85 1000BASE-SX 85 1000BASE-T 85 100BASE-TX 85 10BASE-T 85 A auto IP configuration 33 default IP address 34 default mask 34 B bandwidth 85 Baseline Switch 2848-SFP 81 C categ.
94 I NDEX N network analyzer 61, 62 network defined 88 P passwor d changing 38 default (b lank) 38 setting 32 port settings configuring 53, 62, 65 positioning the Swi tch 15 POST 18 protocol defined 8.
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