Related Manuals for 3Com Baseline 2848-SFP Plus
Summary of Contents for 3Com Baseline 2848-SFP Plus
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Page 1: User Guide
Baseline Switch 2848-SFP Plus User Guide Installationsanleitung 3C16486 www.3com.com Part No. DUA1648-6AAA01 Published January 2006... - Page 2 3Com Corporation. 3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change.
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Page 3: Table Of Contents
ONTENTS BOUT UIDE Conventions Documentation Comments Product Registration NTRODUCING THE ASELINE WITCH Overview of the Baseline Switch Features and Capabilities Autosensing of MDI/MDIX Connections Autonegotiating 10/100/1000 Mbps Ports SFP Ports Physical Features Front Panel Rear Panel Package Contents NSTALLING THE WITCH Before You Begin Positioning the Switch... - Page 4 Setting the IP Address Configure Port Settings Basic Port Configuration Advanced Port Configuration Configuring VLANs Creating a VLAN Modify VLANs Delete VLANs Forwarding Tagged/Untagged Frames Sample VLAN Configurations Configuring Trunking Guidelines for creating Trunks Defining the Members of a Trunk Modifying Trunk Settings and Deleting a Trunk Viewing the Trunk Summary Viewing Statistics...
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Page 5: About This Guide
BOUT UIDE This guide describes how to install your 3Com Switch and perform initial management configurations. 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). -
Page 6: Documentation Comments
Questions related to technical support or sales should be directed in the first instance to your network supplier. Product Registration You can now register your Baseline Switch on the 3Com Web site to receive up-to-date information on your product: http://esupport.3com.com... -
Page 7: Introducing The Baseline Switch
NTRODUCING THE This chapter provides an overview of the features and capabilities of the 3Com Baseline Switch 2848-SFP Plus. It also identifies the contents of the Switch package and helps you get to know the physical features of the device. -
Page 8: Sfp Ports
NTRODUCING THE ASELINE WITCH SFP Ports The four SFP ports support fiber Gigabit Ethernet short-wave (SX) and long-wave (LX) SFP transceivers in any combination. This offers you the flexibility of using SFP transceivers to provide connectivity between the Switch and a 1000 Mbps core network. When an SFP port is in operation, the corresponding 10/100/1000BASE-T port is disabled. - Page 9 In such a configuration, you may notice some degradation of network performance. 3Com recommends that you use devices that are capable of auto-negotiation (and that you ensure that auto-negotiation is enabled, if it is a configurable option).
- Page 10 NTRODUCING THE ASELINE WITCH Flashing Packets are being received or transmitted on the Green port at 1000 Mbps. Flashing Packets are being received or transmitted on the Yellow port at 10 or 100 Mbps. The link has not been established, either nothing is connected to the port, or there is a problem: Check that the attached device is powered ■...
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Page 11: Rear Panel
Switch to the factory default settings if, for example, you have forgotten the default IP address, or forgotten your user name or password. CAUTION: 3Com recommends that you back up your configuration settings before you recover the Switch, otherwise your configuration may be lost. Refer to “Configuration”... - Page 12 NTRODUCING THE ASELINE WITCH...
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Page 13: Installing The Switch
NSTALLING THE This chapter contains information that you need to install and set up the Switch. It covers the following topics: Before You Begin ■ Positioning the Switch ■ Rack-Mounting or Free-Standing ■ Supplying Power to the Switch ■ Using SFP Transceivers ■... -
Page 14: Rack-Mounting Or Free-Standing
■ Air flow around the unit and through the vents on ■ the side of the case is not restricted (3Com recommends that you provide a minimum of 25 mm (1 in.) clearance). The air is as free from dust as possible. -
Page 15: Montagesatz Anweisungen
Insert the two screws supplied in the mounting kit and fully tighten with a suitable screwdriver. Figure 2 Rack Mounting the Unit Repeat steps 2 and 3 for the other side of the unit. Insert the unit into the 19-inch rack and secure with suitable screws (not provided). -
Page 16: Supplying Power To The Switch
Ensure that the power input to your system is clean and free from sags and surges to avoid unforeseen network outages. 3Com recommends that you install power conditioning, especially in areas prone to blackout, power dips and electrical storms. -
Page 17: Using Sfp Tranceivers
■ 3CSFP92 SFP (LX) ■ To access the latest list of approved SFP transceivers for the Switch on the 3Com Web site, enter this URL into your Internet browser: http://www.3com.com 3Com recommends using 3Com SFPs on the Switch. If you insert an SFP transceiver that is not supported, the Switch will not recognize it. -
Page 18: Removing An Sfp Transceiver
NSTALLING THE WITCH 1000BASE-LX SFP transceiver ■ Use this transceiver to connect 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. -
Page 19: Performing Spot Checks
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. 3Com recommends periodically checking the items listed in Table 1. Table 1 Items to Check... - Page 20 NSTALLING THE WITCH...
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Page 21: Connecting To The Web Interface
To connect to the Web interface, you need the following: The Discovery application, which is included on ■ 3Com Baseline Switch 2848-SFP Plus CD-ROM that is supplied with your Switch A computer that is connected to the Switch and that ■... - Page 22 Next. If the computer has only one adapter, click Next. folder on the discovery.exe Discovery searches the network for 3Com devices. When detection is complete, the Discovered Devices screen displays detected network devices. Figure 5 Discovered Devices Screen On the Discovered Devices screen, click Baseline Switch 2848-SFP Plus, and then click Next.
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Page 23: Logging On To The Web Interface
Logging On to the Web Interface After the Web interface loads in your Web browser, the first page that appears is the logon screen. On this screen, you need to enter the administration user name and password to gain access to the Web interface. The logon screen also displays the IP address that the Switch is currently using. -
Page 24: Buttons
Allows you to perform various system maintenance tasks, such as upgrading the firmware, resetting the Switch, backing up and restoring configuration Support Displays 3Com contact information and describes how to use the online help system Log Out Allows you to securely log off the Web... -
Page 25: Accessing The Interface Without Using Discovery
Enable or disable the port ■ Enable or disable flow control ■ Configure the speed duplex settings ■ Set the priority of the port ■ Accessing the Interface Without Using Discovery The Discovery application works by automatically detecting the IP address that is assigned to the Switch, and then using that address to connect to the Web interface. - Page 26 ONNECTING TO THE NTERFACE...
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Page 27: Configuring The Switch
ONFIGURING THE This chapter provides information on how to configure the Switch’s features. Topics include: Configuration Overview ■ Viewing Switch Information ■ Changing the Admin Password ■ Modifying the IP Address Settings ■ Configuration Overview The Switch is shipped ready for use. 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. -
Page 28: Changing The Admin Password
User name – admin ■ Password – blank (no password) ■ To ensure that unauthorized users do not access the Web interface, 3Com recommends that you set an admin password when you first configure the Switch. Figure 9 Password Screen... -
Page 29: Modify The Ip Address Settings
To set the admin password: On the menu, click Password. The Change Administration Password screen appears. In Old Password, type your current password. By default, the Switch does not have any password. If this is your first time to access this screen or if you have not previously set a password, leave this field blank. -
Page 30: Setting The Ip Address
169.254.1.3. The Switch repeats step 2 until an unused IP address is found. 3Com recommends using automatic IP configuration only for the initial setup. Once you gain access to the console, you should assign an IP address to the Switch... -
Page 31: Configure Port Settings
IP Address Mode Specify how the Switch will get its IP address. Available options include: DHCP – Select this option if you ■ have a DHCP server on the net- work and you want the Switch to automatically obtain an IP address from it Static –... - Page 32 ONFIGURING THE WITCH periods of high traffic. Flow control is enabled by default. Speed Duplex – Sets the speed and duplex mode of ■ the port. Available options include auto, 10 half-duplex, 10 full-duplex, 100-half duplex, and 100 full-duplex. For 1000 Mbps connections, see “Speed/Duplex for 1000 Mbps Connections”...
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Page 33: Advanced Port Configuration
Advanced Port Configuration Use the Advanced Port Configuration tab to set the Switch’s broadcast storm control and threshold limits. A broadcast storm is an incorrect packet sent out on a network that causes most hosts to respond all at once, typically with wrong answers that start the process over again. -
Page 34: Creating A Vlan
ONFIGURING THE WITCH Communication between different VLANs can only take place if they are all connected to a router or layer 3 switch. Creating a VLAN Use the Create VLANs screen to create VLANs on the Switch. To propagate information about VLAN groups used on this Switch to external devices, you must specify a VLAN ID for each VLAN. -
Page 35: Delete Vlans
A tagged port is sometimes referred to as an uplink port. The two terms refer to the same feature. If a port is already an untagged member of VLAN 0, making it an untagged memeber of VLAN 1 will disassociate it from VLAN 0. The same result happens from VLAN 1 to VLAN 0. - Page 36 ONFIGURING THE WITCH Figure 14 Untagged VLAN Configuration Example Endstations Endstations in VLAN 1 in VLAN 2 Baseline Switch 2848-SFP Plus Server Server in VLAN 1 in VLAN 2 This example explains how you can set up a simple VLAN Configuration on your Switch using untagged connections.
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Page 37: Configuring Trunking
To set up the configuration shown in Figure 15, do the following: Use the Create VLANs screen (Figure 13) to create VLAN2 on both Switch 1 and Switch 2. (VLAN1 is the default VLAN and already exists.) For Switch 1, click the icon under port numbers you want to add to VLAN2 until you see the letter U for Untagged. -
Page 38: Modifying Trunk Settings And Deleting A Trunk
ONFIGURING THE WITCH The Status column refers to the speed and duplex mode of the trunk members. To change the speed and duplex mode of the trunk, click the Modify/Delete tab. Figure 16 Trunking Membership Screen Modifying Trunk Settings and Deleting a Trunk Use the Modify/Delete tab to modify the trunk name and configure flow control and duplex settings of the trunk. -
Page 39: Viewing Statistics
Figure 18 Trunking Summary Screen Viewing Statistics The Statistics page shows a summary of traffic statistics for all ports, as shown in Figure 19. Figure 19 Statistics Page Viewing Statistics Figures that appear onscreen indicate the number of packets transmitted (Tx) and received (Rx). To reset all packet counts to zero, click Clear ■... -
Page 40: Running Cable Diagnostic
ONFIGURING THE WITCH you need to attach a network analyzer to one port and use it to monitor the traffic of other ports in the stack. To set up traffic monitoring, you need to set an analyzer port (the port that is connected to the analyzer), and a monitor port (the port that is to be monitored). -
Page 41: Using The System Tools
Figure 22 Cable Diagnostic Screen Using the System Tools The System Tools menu includes five administration items: Restart, Configuration, Upgrade and Spanning Tree. Restart Pressing the Restart the Switch button has the same effect as power cycling the unit. No configuration information will be lost. -
Page 42: Resetting To Factory Defaults
Upgrade The Upgrade feature allows you to install on the Switch any new releases of system software that 3Com may make available. To check for available software upgrades, refer to “Access Software Downloads” on page 49. -
Page 43: Spanning Tree
The file will be copied to the Switch, and once this has completed, the Switch will restart. Although the upgrade process has been designed to preserve your configuration settings, 3Com recommends that you make a backup of the configuration beforehand, in case the upgrade process fails for any reason (for example,... -
Page 44: Support
ONFIGURING THE WITCH 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 the Root Bridge is down. This bridge will then initiate negotiations with other bridges to reconfigure the network to re-establish a valid network topology. -
Page 45: Troubleshooting
Switch, with suggested courses of corrective 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.3com.com before contacting your local technical support representative. - Page 46 The fiber cable is in good condition. ■ The SFP module is correctly inserted. ■ A 3Com SFP module is being used. Refer to ■ “Approved SFP Transceivers” on page 17 for details. The equipment at the far end is installed and ■...
- Page 47 The firmware image has become corrupted If the firmware image becomes corrupted, you need to upgrade the firmware, refer to “Upgrade” on page 42. The Switch goes into Fail Safe mode, and the screen shown in Figure 28 displays. Figure 28 Fail Safe Mode Screen To upgrade the firmware, click Browse, and follow the on-screen instructions to upgrade the Switch to the required version of firmware.
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Page 48: If The Problem Persists
ROUBLESHOOTING If the Problem Persists If the problem persists and the unit still does not operate successfully, contact your supplier with the following information: Product number and serial number (printed on a ■ label supplied with the unit). A brief description of the fault. ■... -
Page 49: A Obtaining Support For Your Product
Contact your authorized 3Com reseller or 3Com for a complete list of the value-added services available in your area. Troubleshoot Online You will find support tools posted on the 3Com Web site at 3Com Knowledgebase helps you troubleshoot 3Com products. This query-based interactive tool is located at http://knowledgebase.3com.com... -
Page 50: Telephone Technical Support And Repair
Details about recent configuration changes, if ■ applicable To send a product directly to 3Com for repair, you must first obtain a return authorization number (RMA). Products sent to 3Com, without authorization numbers clearly marked on the outside of the package, will be returned to the sender unopened, at the sender’s... - Page 51 Thailand 001 800 611 2000 You can also obtain support in this region using the following e-mail: apr_technical_support@3com.com Or request a repair authorization number (RMA) by fax using this number: +65 543 6348 Europe, Middle East, and Africa Telephone Technical...
- Page 52 Latin America Telephone Technical Support and Repair Antigua Barbuda AT&T +800 988 2112 Argentina Local Number 54 11 5556 3200 Argentina 0 810 444 3COM Argentina 810 44 32 66 Aruba AT&T +800 998 2112 Bahamas AT&T +800 998 2112 Barbados AT&T +800 998 2112...
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Page 53: B Technical Information
ECHNICAL Related Standards The Baseline Switch 2848-SFP Plus has been designed to the following standards: Functional IEEE 802.3 (Ethernet), IEEE 802.3u (Fast Ethernet), IEEE 802.3ab and IEEE 802.3z (Gigabit Ethernet), IEEE 802.3x (Flow Control), IEEE 802.1D 1993 (Bridging), IEEE D802.1Q 1998 (Virtual LAN) 4096 Address... - Page 54 B: T PPENDIX ECHNICAL NFORMATION...
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Page 55: Afety Nformation
AFETY Important Safety Information Please read the following safety information carefully before installing the Baseline Switch 2848-SFP Plus. 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 ■... -
Page 56: L'information De Sécurité Importante
C: S PPENDIX AFETY NFORMATION Power Cord Set This must be approved for the country where it will be used. U.S.A. and The cord set must be UL-approved and CSA ■ Canada certified. The minimum specifications for the flexible ■ cord are: No. - Page 57 configuration qui permet un branchement sur une entrée d’appareil EN60320/IEC 320. La prise secteur doit se trouver à proximité de ■ l’appareil et son accès doit être facile. Vous ne pouvez mettre l’appareil hors circuit qu’en débranchant son cordon électrique au niveau de cette prise.
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Page 58: Wichtige Sicherheitinformationen
WARNUNG: Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal erfolgen. Wenn der Baseline Switch 2848-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 ■... -
Page 59: Glossary
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 specification for Gigabit Ethernet over 9/125 micron core single-mode fiber cable. - Page 60 LOSSARY Category 3 Cables One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-568 standard. 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.
- Page 61 Full Duplex A system that allows packets to be transmitted and received at the same time and, in effect, doubles the potential throughput of a link. Half Duplex A system that allows packets to be transmitted and received, but not at the same time. Half duplex is not supported for 1000 Mbps.
- Page 62 LOSSARY switches) that cover a relatively small geographic area (usually not larger than a floor or building). LANs are characterized by high transmission speeds over short distances (up to 1000 metres). Layer 2 Data Link layer in the ISO 7-Layer Data Communications Protocol.
- Page 63 Server 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. Small Form Factor Pluggable (SFP) Connectors are based on an open standard that enables hot swapping of various type of fiber optic and copper-based transceivers into the host equipment.
- Page 64 LOSSARY VLAN A Virtual LAN is a collection of network nodes that share the same collision domain regardless of their physical location or connection point in the network. A VLAN serves as a logical workgroup with no physical barriers, and allows users to share information and resources as though located on the same LAN.
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Page 65: Regulatory Notices
EGULATORY OTICES FCC Statement 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. -
Page 67: Index
NDEX Numbers 1000BASE-LX 59 1000BASE-SX 59 1000BASE-T 59 100BASE-TX 59 10BASE-T 59 admin password changing 28 automatic IP configuration 29 default IP 29 default mask 30 bandwidth 59 Baseline Switch 2848-SFP 53 category 3 cables 60 category 5 cables 60 category 5e cables 60 category 6 cables 60 changing the admin password 28... - Page 68 NDEX LED issues 45 local area network 61 MAC address 62 media access control 62 network defined 62 obtaining support/feedback 44 password 47 changing 28 default (blank) 28 setting 29 positioning the Switch 13 POST 16 power cycle 41 protocol defined 62 restarting the Switch 41 RJ-45 defined 62 saving Switch configuration 42...