3Com® Baseline Switch 2816-SFP Plus (3C16485) User Guide DUA1648-5AAA02 1 4 9 12 5 8 13 16 Modu le Pre sent Base line Sw itc Link/A cti Flash vity : Gr ee = Ac tivity n = 10 00 , Du plex M, Yello : On w = Fu = 10/10 ll, Of f = Ha0M, lf 3C16 h 28 485 16-S FP
Copyright © 3Com Technologies, 2004. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Technologies. 3Com Technologies reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Technologies to provide notification of such revision or change.
Contents SFP Operation 14 Approved SFP Transceivers 14 Inserting an SFP Transceiver 14 Removing an SFP Transceiver 15 About this Guide Naming Convention 5 Conventions 5 Feedback about this User Guide Product Registration 6 Introduction Baseline Switch 2816-SFP Plus Package Contents 8 Mounting Kit Instructions Introduction 17 Rack Mounting the Units 6 Automatic IP Configuration How Your Switch Obtains IP Information How Automatic IP Configuration Works Automatic Process 19 7 19 19 Switch Configuratio
Membership VLANs Trunking 30 Traffic Monitoring 32 System Tools 32 Restart 32 Configuration 33 Upgrade 33 Spanning Tree 35 802.
ABOUT THIS GUIDE This guide is intended for use by those responsible for installing and setting up network equipment; consequently, it assumes a basic working knowledge of LANs (Local Area Networks). Conventions Table 1 and Table 2 list conventions that are used throughout this guide. If a release note is shipped with this 3Com Baseline Switch 2816-SFP Plus and contains information that differs from the information in this guide, follow the information in the release note.
Table 2 Do not use this e-mail address for technical support questions. For information about contacting Technical Support, please refer to “Support” on page 37. Text Conventions (continued) Convention Description Words in italics Italics are used to: ■ Emphasize a point. ■ Denote a new term at the place where it is defined in the text. ■ Identify menu names, menu commands, and software button names. Examples: From the Help menu, select Contents. Click OK.
INTRODUCTION The 3Com® Baseline Switch 2816-SFP Plus is a versatile, easy-to-use configurable Switch. It is ideal for users who want the high-speed performance of 10/100/1000 switching with the added functionality of Gigabit links, but do not need sophisticated management capabilities. The Switch is shipped ready for use. No configuration is necessary.
Package Contents The Switch comes with: ■ One power cord ■ Four standard height, self-adhesive rubber pads ■ One mounting kit ■ Installation CD ■ This User Guide ■ Warranty flyer The Switch is powered from the AC supply.
HOW TO USE BASELINE SWITCH 2816-SFP PLUS THE AVERTISSEMENT: Points d’accès RJ-45. Ceux-ci sont protégés par des prises de données. Ils ne peuvent pas être utilisés comme prises de téléphone conventionnelles standard, ni pour la connection de l’unité à un réseau téléphonique central privé ou public. Raccorder seulement connecteurs de données RJ-45, systèmes de réseaux de téléphonie ou téléphones de réseaux à ces prises.
3 Link/Activity Status LEDs CAUTION: The Switch supports full duplex auto-negotiation. If auto-negotiation is disabled for 1000BASE-T, then the Switch uses the forced-mode default of 100 full duplex mode. If the connected device does not support auto-negotiation, the Switch will operate in half duplex mode (even if the attached device is operating in full duplex mode). In such a configuration, you may notice some degradation of network performance.
4 Module Active LEDs The Module Active LEDs shows the status of any SFP modules that are installed. Status Meaning Green Fiber SFP is inserted in the slot. Off No fiber SFP is inserted in the slot. Status Meaning Flashing Green ■ Power-on self test is in progress. Yellow ■ Power-on self test or loopback test failed. Switch is in failsafe mode. 7 Self-adhesive Pads The unit is supplied with four self-adhesive rubber pads.
CAUTION: 3Com recommends that you back up your configuration settings before you recover the Switch, otherwise your configuration will be lost. Refer to “Configuration” on page 33 for details.
INSTALLATION RECOMMENDATIONS CAUTION: If installing the Switch in a free-standing stack of different size Baseline or Superstack 3 units, the smaller units must be installed above the larger ones. Do not have a free-standing stack of more than six units. Positioning the Switch When deciding where to position the Switch ensure that: ■ It is accessible and cables can be connected easily. ■ Cabling is away from sources of electrical noise.
SFP transceivers are hot-insertable and hot-swappable. You can remove them from and insert them into any SFP port without having to power down the Switch. Spot Checks At frequent intervals you should visually check the Switch. Regular checks can give you an early warning of a possible failure; any problems can then be attended to when there will be least effect on users. Check the following: Cabling Check that all external cabling connections are secure and that no cables are pulled taut.
Use of non-3Com SFPs is not recommended. If the SFP transceiver is invalid it will not be recognised by the Switch. 7 Use the following sequence of steps to activate the SFP ports: 1 Hold the transceiver so that the fiber connector is toward you and the product label is visible, as shown in Figure 3. Ensure the wire release lever is closed (in the upright position). 2 Gently slide the transceiver into the SFP slot until it clicks into place. Figure 3 Remove the plastic protective cover, if fitted.
MOUNTING KIT INSTRUCTIONS Figure 4 Back Mounting the Units Introduction The Switch is supplied with two mounting brackets and four screws. These are used for rack mounting the unit. When mounting the unit, you should take note of the guidelines given in “Positioning the Switch” on page 13. Baseline Rack Mounting the Units The Switch is 1U high and will fit in a standard 19-inch rack. CAUTION: Disconnect all cables from the unit before continuing.
AUTOMATIC IP CONFIGURATION Switch’s MAC address in the DHCP server’s lease list. Refer to “IP Settings” on page 23. This chapter explains more about IP addresses and how automatic IP configuration works on the Switch. 3Com recommends that you do not use DHCP Addressing, unless you have experience of configuring and managing a DHCP server. For details on how to view and amend your Switch’s IP settings, refer to “IP Settings” on page 23.
3 The Switch repeats step 2 until an unused IP address is found.
SWITCH CONFIGURATION This chapter describes all the options available through the Switch configuration pages, and is provided as a reference. Navigating Through the Switch Configuration Pages To get to the configuration pages, browse to the Switch by entering the URL in the location bar of your browser. The default URL is http://169.254.x.y., where x and y are assigned by the process described in “How Automatic IP Configuration Works” on page 19.
Fan Status Summary Screen At the bottom of all screens is an image of the Switch’s front panel, as shown in Figure 6. At the right hand side of the panel under the 3Com company name is an image depicting two fans. These represent the Switch’s fans and their current status. A green fan indicates normal operation, a red fan indicates that the fan has failed to start. In the event of fan failure refer to “Technical Support” on page 52.
The password is case sensitive. Password You should change the password to prevent unauthorized access to the Administration System. Figure 8 IP Settings The IP Settings menu allows you to view and amend your Switch’s IP settings. Password Screen Figure 9 IP Settings Screen To change the password: 1 Enter the current password in the Old Password field. 2 Enter the new password in the New Password field. 3 Enter the new password again in the Confirm Password field.
■ IP Address Mode — Specifies whether IP functionality is enabled via automatic IP configuration, manual configuration (static) or dynamically using DHCP (Dynamic Host Configuration Protocol). ■ IP Address — The IP address of the Switch, and the address of the default VLAN (VLAN1). ■ Subnet Mask — This mask identifies the host address bits used for routing to specific subnets.
■ Speed Duplex — Shows the current speed and duplex mode. (Auto or fixed choice) VLANs The Switch uses VLANs to organise any group of ports into separate broadcast domains. VLANs confine broadcast traffic to the originating group and can eliminate broadcast storms in large networks. This also provides a more secure and cleaner network environment. In the Advanced Port Configuration page you can set the Switch’s broadcast storm control and threshold limits.
VLAN Configuration Examples Desktop VLAN Configuration Example Figure 12 Desktop VLAN Configuration Example Endstations in VLAN 2 Endstations in VLAN 1 2 In the Modify VLANs screen (Figure 16), select Desktop from the Mode drop down list for port 7. 3 Repeat step 2 for ports 8 and 16. 4 In the Modify VLANs screen, select 2 from the VLAN ID drop down list for port 7. 5 Repeat step 4 for ports 8 and 16.
Uplink VLAN Configuration Example Figure 13 In the Modify VLANs screen (Figure 16) for Switch 1, select Desktop from the Mode drop down list for the ports you want to add to VLAN2. 3 Select 2 from the VLAN ID drop down list for the ports you want to add to VLAN2. 4 Repeat steps 2 and 3 for Switch 2. 5 Select Uplink as the Mode for port 16 on Switch 1. 6 Select Uplink as the Mode for port 8 on Switch 2. 7 Connect port 16 on Switch 1 to port 8 on Switch 2.
Create VLANs Delete VLANs Use the Delete VLANs page to remove a VLAN group from the current list. Use the Create VLANs page to set up VLANs. To propagate information about VLAN groups used on this switch to external devices, you must specify a VLAN ID for each of these groups. Figure 14 Figure 15 Delete VLANs Screen Create VLANs Screen ■ ■ VLAN ID — ID of configured VLAN (1-4094, no leading zeroes). ■ Name — Name of the VLAN (1 to 32 characters). 28 VLAN ID — ID of the VLAN to be deleted.
Modify VLANs ■ Use the Modify VLAN page to change the VLAN to which a port belongs, and configure the port to communicate with all other VLANs, or a selected VLAN. Figure 16 Desktop - if you select this, the port can only communicate with other ports assigned to the VLAN selected in the VLAN ID drop down list. An Uplink port is sometimes referred to as a tagged port. The two terms refer to the same feature.
■ VLAN ID — ID of the configured VLAN (1-4094, no leading zeroes). ■ Name — Name of the VLAN (1 to 32 characters). ■ Ports — Port identifier. Figure 18 Trunking Screen Trunking Ports can be statically grouped into a trunk, also known as an aggregated link under the IEEE 802.1ad standard. This increases the bandwidth of a network connection and ensures fault recovery. Trunking permits the connection of multiple ports to the same remote device in order to achieve higher network throughput.
Use the Trunking Membership page to add ports to a group membership. Use the Trunking Summary page to display all of the configuration settings for the created trunks. Figure 19 Figure 20 Trunking Membership Screen ■ Port — The port number. ■ Status — The status refers to the speed and duplex mode of the trunk members. ■ Trunk — ID of trunk.
Traffic Monitoring System Tools Use the Traffic Monitoring window to enable port traffic monitoring. The Switch supports the attachment of a network analyzer to one port in order to monitor the traffic of other ports on the Switch. The System Tools menu includes five administration items: Restart, Configuration, Upgrade, Spanning Tree and 802.1p Prioritization. Restart Figure 21 Traffic Monitoring Screen Pressing the Restart the Switch button has the same effect as power cycling the unit.
locate the backup file on your computer, and then RESTORE to copy the configuration back to the Switch. Any network users who are currently accessing the Internet will have their access interrupted while the restart takes place, and they may need to reboot their computers when the restart has completed and the Switch is operational again. For security purposes, restoring the configuration does not change the password.
Figure 24 The following progress screen displays while the upgrade is taking place. Upgrade Screen Figure 25 Once you have downloaded the software, use the Browse button to locate the file on your computer, and then click on Apply. Upgrade progress screen The upgrade procedure can take a few minutes, and is complete when the progress bar has finished running and the Power LED has stopped flashing and is permanently green.
Spanning Tree blocked, which means that they are prevented from forwarding traffic. This administrative tool supports the configuration of the Switch to forward, or block and discard 802.1D spanning tree BPDU packets. Figure 26 Spanning Tree Screen Spanning tree is a bridge-based system for providing fault tolerance on networks and can be used to detect and disable network loops.
802.1p Prioritization The Switch has priority queuing enabled, which means all packets that are received are examined to see if they have been priority encoded. If a packet has been priority encoded, then the Switch will read the priority level and determine whether the packet should be directed through the normal or high priority channel. This feature can be useful for example during excessive loads when one type of traffic may require priority over another. The Switch is configured to comply with 802.
Figure 27 802.1p Prioritization screen Support Selecting Support on the main menu displays the support links screen, which contains a list of Internet links that provide information and support concerning the Switch.
USING DISCOVERY Discovery will find the Switch even if it is unconfigured or misconfigured. Running the Discovery Application 3Com provides a user-friendly Discovery application for detecting the Switch on the network. Figure 29 If your computers are configured with static addresses (also known as fixed addresses) and you do not wish to change this, then you should use the Discovery program on the Switch CD-ROM to detect and configure your Switch.
2 When the Welcome screen is displayed click on Next and wait until the application discovers the Switches connected to your LAN. 3 Figure 30 shows an example Discovered Devices screen. Highlight the Secure Switch by clicking on it, and click Next. Figure 31 Figure 30 Discovery Finish Screen Discovered Switch 7UHF46B9C2A9C 4 40 Click on Finish to launch a web browser and display the login page for the Switch.
PROBLEM SOLVING Refer to the information about LEDs given earlier in this guide to see if the problem can be identified and rectified. Here are some common problems that can occur: A link is connected but the Link/Activity Status LED for the port does not light The device being connected to is powered on and operating correctly. ■ The cable is connected at both ends. ■ The cable is not damaged.
Once the Switch has entered Fail Safe mode and is reset upon startup the Switch will enter Automatic IP Configuration mode. Refer to “How Automatic IP Configuration Works” on page 19 for details. The Firmware image has become corrupted If the firmware image becomes corrupted, you need to upgrade the firmware. The Switch goes into Fail Safe mode, and the screen shown in Figure 32 displays. Figure 32 CAUTION: Before recovering the Switch, save the Switch’s current configuration.
at least 5 seconds, or when the LED flashes, release the recovery button. The Switch will now enter fail safe mode, whereby the Switch’s IP address, user name and password will be reset to the factory defaults. 4 Click on the RESTART THE SWITCH button. 5 Restore the configuration file that you backed up in step 1. Refer to “Configuration” on page 33 for details. If the problem persists...
SAFETY INFORMATION Power Cord Set This must be approved for the country where it will be used. Please read the following safety information carefully before installing the Baseline Switch 2816-SFP Plus. U.S.A. and Canada WARNING: Installation and removal of the unit must be carried out by qualified personnel only. ■ If installing the Switch unit in a stack with other units, the Switch unit must be installed below the narrower units and above the deeper units.
L'INFORMATION DE SÉCURITÉ IMPORTANTE connexion portant l’appellation Neutre et avec raccordement direct à la terre (masse). Cordon électrique Il doit être agréé dans le pays d’utilisation. Veuillez lire à fond l'information de la sécurité suivante avant d'installer le Baseline Switch 2816-SFP Plus. AVERTISSEMENT: L’installation et la dépose de ce groupe doivent être confiés à un personnel qualifié.
WICHTIGE SICHERHEITSINFORMATIONEN Bitte unbedingt vor dem Einbauen des Baseline Switch 2816-SFP Plus die folgenden Sicherheitsanweisungen durchlesen. WARNUNG: Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal erfolgen. ■ Wenn der Baseline Switch 2816-SFP Plus mit anderen 3Com Hubs oder Switche gestapelt werden soll, müssen grössere Geräte unter den schmaleren Hubs eingebaut werden. ■ Das Gerät sollte nicht an eine ungeerdete Wechselstromsteckdose angeschlossen werden.
TECHNICAL INFORMATION Electrical Related Standards Power Inlet AC Line Frequency Input Voltage Current Rating Maximum Power Consumption Maximum Power Dissipation The Baseline Switch 2816-SFP Plus has been designed to the following standards: Functional ISO 8802-3, IEEE 802.3 (Ethernet), IEEE 802.3u (Fast Ethernet), IEEE 802.3ab and IEEE 802.3z (Gigabit Ethernet), IEEE 802.3x (Flow Control), IEEE 802.
TECHNICAL SUPPORT Troubleshoot Online Where To Go For Help Contact your authorised 3Com reseller or 3Com for additional product and support information. You will find support tools posted on the 3Com web site at www.3com.com 3Com knowledgebase, which contains thousands of technical solutions written by 3Com support engineers, helps you troubleshoot 3Com products. This query-based interactive tool is located at http://knowledgebase.3com.
Country Telephone Technical Support and Repair Asia, Pacific Rim Telephone Technical Support and Repair To obtain telephone support as part of your warranty and other service benefits, you must first register your product at Australia Hong Kong India http://eSupport.3com.
Country Telephone Number Country Europe, Middle East, and Africa Telephone Technical Support and Repair From the Caribbean, Central and South America, call: From anywhere in these regions, call: +44 (0)1442 435529 Antigua Argentina Aruba Bahamas Barbados Belize Bermuda Bonaire Brazil Cayman Chile Colombia Costa Rica Curacao Ecuador Dominican Republic Guatemala Haiti Honduras Jamaica Martinique Mexico Nicaragua Panama Paraguay Peru Puerto Rico Salvador Trinidad and Tobago Uruguay Venezuela Virgin Islan
Country Telephone Number You can also obtain support in this region using the following: Spanish speakers, enter the URL: http://lat.3com.com/lat/support/form.html Portuguese speakers, enter the URL: http://lat.3com.com/br/support/form.html English speakers in Latin America should send e-mail to: lat_support_anc@3com.
GLOSSARY 10BASE-T Bandwidth The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable. The information capacity, measured in bits per second, that a channel can transmit. The bandwidth of Ethernet is 10 Mbps, the bandwidth of Fast Ethernet is 100 Mbps and Gigabit Ethernet is 1000 Mbps. 100BASE-TX The IEEE specification for 100 Mbps Fast Ethernet over Category 5 twisted-pair cable. BPDU Bridge Protocol Data Unit.
Category 5e Cables Ethernet Address One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-568 standard. Category 5e can be used in Ethernet (10BASE-T), Fast Ethernet (100BASE-TX) and Gigabit Ethernet (1000BASE-T) networks, and can transmit data at speeds of up to 1000 Mbps. See MAC address. Fast Ethernet An Ethernet system that is designed to operate at 100 Mbps. Gigabit Ethernet Category 6 Cables An Ethernet system that is designed to operate at 1000 Mbps.
IEEE 802.1Q IP Address VLAN Tagging - Defines Ethernet frame tags which carry VLAN information. It allows switches to assign endstations to different virtual LANs, and defines a standard way for VLANs to communicate across switched networks. Internet Protocol Address. A unique identifier for a device attached to a network using TCP/IP. The address is written as four octets separated with periods (full-stops), and is made up of a network section, an optional subnet section and a host section. IEEE 802.
MAC Address Server Media Access Control Address. Also called the hardware, physical or Ethernet address. A layer 2 address associated with a particular network device. Most devices that connect to a LAN have a MAC address assigned to them as they are used to identify other devices in a network. MAC addresses are 6 bytes long. A computer in a network that is shared by multiple end stations. Servers provide end stations with access to shared network services such as computer files and printer queues.
TCP/IP Transmission Control Protocol/Internet Protocol. This is the name for two of the most well-known protocols developed for the interconnection of networks. Originally a UNIX standard, TCP/IP is now supported on almost all platforms, and is the protocol of the Internet. TCP relates to the content of the data travelling through a network — ensuring that the information sent arrives in one piece when it reaches its destination.
INDEX Numbers D 1000BASE-LX 55 1000BASE-SX 55 1000BASE-T 55 100BASE-TX 55 10BASE-T 55 802.
G M getting help 21 Gigabit Ethernet 56 MAC address 57 main menu 21 manual configuration 19 media access control 57 H half duplex 56 help menu 21 N network defined 58 I O IEEE 56 IETF 57 IP address 19 obtaining support/feedback 37 automatic IP configuration 19 DHCP addressing 19 Discovery program 19 static IP configuration 19 IP defined 57 IP Precedence 36 ISP defined 57 P password 42 changing 23 positioning the Switch 13 power cycle 32 prioritization 802.
S T saving Switch configuration 32 server defined 58 setting up computers 17 subnet mask 58 support 37 Support for your product 51 Switch TCP/IP 57 defined 59 technical specifications 49 traffic 59 traffic prioritization 36 changing the password 23 configuration 21 positioning 13 restarting 32 switch defined 58 system tools 32 U upgrading firmware 33 V VCCI statement 65 VLAN 25 configuration example 25 create a 27 delete a 28 modify a 28 63
REGULATORY NOTICES FCC Statement CE Statement (Europe) This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a commerical environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
Part Number: DUA1648-5AAA02 Published: September 2004 66
