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3Com Baseline Switch 2900 Family 
 
Getting Started Guide 
 
 
 
 
  
  
  
  
  
  
  
  
Manual Version: 5W100 
www.3com.com 
 
3Com Corporation 
350 Campus Drive, Marlborough, 
MA, USA 01752 3064 
 
                                                                                                                                                                                                                                                                                              
                    
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                        Copyright © 2009, 3Com Corporation. 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 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.  3Com C
                    
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                        About This Manual  Organization  3Com Baseline Switch 2900 Family Getting Started Guide is organized as follows:  Chapter Contents  Briefly introduces the appearance, system description, as  1 Product Overview well as the features and applications of the 3Com Baseline  Switch 2900 Family.  Describes the requirements on installation site, the safety  2 Installation Preparations recommendations before and during installation, and the  required tools.  Covers the procedures for installing the 3Com 
                    
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                        Convention Description  Means a complementary description.     Means techniques helpful for you to make configuration with ease.       Related Documentation  In addition to this manual, each 3Com Baseline Switch 2900 documentation set includes the following:  Manual Description   Describe how to configure your 3Com Baseline  3Com Baseline Switch 2900 Family  User Guide Switch 2900 Family using the supported  protocols    Obtaining Documentation  You can access the most up-to-date 3Com product do
                    
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                        Table of Contents  1 Product Overview ······································································································································1-1  Introduction ·············································································································································1-1  3Com Baseline Switch 2920-SFP Plus···································································································1-3  Front Panel ··············
                    
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                        Laser Safety ····································································································································2-2  Installation Tools ·····································································································································2-3  3 Installing a Switch ·····································································································································3-1  Installing the Switch into a 19-I
                    
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                          1  Product Overview  Introduction  The 3Com Baseline Switch 2900 Family are Layer 2 Gigabit Ethernet switches developed by 3Com.  They are intelligent manageable switches designed for network environments where high performance,  high-density port distribution, and easy installation are required.   With 10/100/1000 Mbps Ethernet interfaces, the 3Com Baseline Switch 2900 Family are mainly  deployed at the access layer in enterprise networks requiring Gigabit to the Desktop (GTTD) application  a
                    
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                          Description  3Com 3Com 3Com 3Com 3Com  Baseline Baseline Baseline Baseline Baseline  Item  Switch Switch Switch Switch Switch  2920-SFP 2928-SFP 2952-SFP 2928-PWR 2928-HPWR  Plus Plus Plus Plus Plus  Rated voltage range: 100 VAC to 240 VAC, 50 Hz or 60 Hz  AC  Maximum voltage range: 90 VAC to 264 VAC, 47 Hz or 63 Hz  Use the  Inp external RPS  ut  unit provided  volt RP by 3Com only,  ag S — with the rated  e  DC voltage  ranging from  –52 VDC to  –55 VDC  Supported  — RPS1000-A3  RPS unit  Po
                    
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                          3Com Baseline Switch 2920-SFP Plus  Front Panel  Figure 1-1 3Com Baseline Switch 2920-SFP Plus front panel      (1) 10/100/1000Base-T auto-sensing Ethernet port (2) Port status LED  (3) Power LED (Power) (4) Console port  (5) 1000Base-X SFP interface      10/100/1000Base-T autosensing Ethernet ports on the 3Com Baseline Switch 2900 Family are  numbered in up-down and left-right order, with the first upper left one being Port 1, the first lower left one  being Port 2, the second upper left one 
                    
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                          3Com Baseline Switch 2928-SFP Plus  Front Panel  Figure 1-3 3Com Baseline Switch 2928-SFP Plus front panel      (1) 10/100/1000Base-T auto-sensing Ethernet port (2) Port status LED  (3) Power LED (Power) (4) Console port  (5) 1000Base-X SFP interface    Rear Panel  Figure 1-4 3Com Baseline Switch 2928-SFP Plus rear panel      (1) AC receptacle (2) Grounding screw    Power Supply System  AC power input:  Rated voltage range: 100 VAC to 240 VAC, 50 Hz or 60 Hz  Input voltage range: 90 VAC to 264
                    
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                          3Com Baseline Switch 2952-SFP Plus  Front Panel  Figure 1-5 3Com Baseline Switch 2952-SFP Plus front panel      (1) 10/100/1000Base-T auto-sensing Ethernet (2) 10/100/1000Base-T auto-sensing Ethernet  port port status LED  (3) Console port (4) Power LED (Power)  (5) 1000Base-X SFP interface (6) 1000Base-X SFP interface status LED    Rear Panel  Figure 1-6 3Com Baseline Switch 2952-SFP Plus rear panel    (1) AC receptacle (2) Grounding screw    Power Supply System  AC power input:  Rated voltag
                    
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                          3Com Baseline Switch 2928-PWR Plus  Front Panel  Figure 1-7 3Com Baseline Switch 2928-PWR Plus front panel      (1) 10/100/1000Base-T auto-sensing Ethernet port (2) Port status LED mode switching button  (3) Port status LED (4) Power LED (Power)  (5) Port mode LED (6) Console port Port  (7) 1000Base-X SFP interface    Rear Panel  Figure 1-8 3Com Baseline Switch 2928-PWR Plus rear panel      (1) AC receptacle (2) Grounding screw    Power Supply System  AC power input:  Rated voltage range: 100 
                    
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                          3Com Baseline Switch 2928-HPWR Plus  Front Panel  Figure 1-9 3Com Baseline Switch 2928-HPWR Plus front panel    (1) 10/100/1000Base-T auto-sensing Ethernet port (2) Port status LED mode switching button  (3) RPS status LED (RPS) (4) Port status LED  (5) Power LED (Power) (6) Port mode LED   (7) Console port  (8) Port 1000Base-X SFP interface    Rear Panel  Figure 1-10 3Com Baseline Switch 2928-HPWR Plus rear panel       (1) Screw hole of the plug (2) AC receptacle   (3) Grounding screw (4) DC 
                    
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                            Only the RPS recommended by 3Com can be used for the 3Com Baseline Switch 2928-HPWR Plus.  The –48 VDC power supply in the equipment room cannot be used directly. Otherwise, the device may  be damaged.    Cooling System  The 3Com Baseline Switch 2928-HPWR Plus is equipped with six fans for heat dissipation.  Ports  Console Port  Each 3Com Baseline Switch 2900 Family provides one console port on the front panel. Table 1-2  describes the console port specifications.  Table 1-2 Console port spe
                    
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                          1000Base-X SFP Interface  Each 3Com Baseline Switch 2900 Family provides four 1000Base-X SFP interfaces on its front panel.  You can select the GE SFP transceivers described in Table 1-4.  Table 1-4 Transceivers supported by the 3Com Baseline Switch 2900 Family 1000Base-X SFP  interfaces  Max  Transceiver Central transmis Transceiver Connector Fiber  type wavelength sion  distance 50/125 µm 550 m  multimode (0.34  optical fiber miles)  SFP-GE-SX-MM850-A 850 nm  62.5/125 µm 275 m  multimode (0.
                    
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                          LEDs  Table 1-5 LEDs  LED Device support Description  Power LED All series See “Power LED” on page 1-10.  3Com Baseline Switch See “RPS Status LED” on page  RPS status LED  2928-HPWR Plus 1-10.  3Com Baseline Switch  2928-PWR Plus and 3Com  Port mode LED See “Port Mode LED” on page 1-11. Baseline Switch 2928-HPWR  Plus  10/100/1000Base-T See “10/100/1000Base-T  auto-sensing Ethernet All series Auto-Sensing Ethernet Port Status  port status LED LED” on page 1-11  1000Base-X SFP See “1000Base-X 
                    
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                          Port Mode LED  The port mode LED on the 3Com Baseline Switch 2928-PWR Plus/3Com Baseline Switch 2928-HPWR  Plus can display the working status of a port for you to obtain more device information. You can use the  port mode switching button to change the status of the port mode LED.  Table 1-8 3Com Baseline Switch 2928-PWR Plus/3Com Baseline Switch 2928-HPWR Plus port mode  LED description  LED Status Description  Solid green Indicates port rate.  Mode  Blinking green (1 Hz)  Indicates port PoE
                    
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                          Port  Ethernet port status  Switch model mode Meaning  LED  LED  The port operates at a rate of 1000  Solid green   Mbps  Data is transmitted or received at a rate  Fast blinking green  of 1000 Mbps  3Com Baseline  The port operates at a rate of 10/100  Switch — Solid yellow   Mbps  2952-SFP Plus  Data is transmitted or received at a rate  Fast blinking yellow   of 10/100 Mbps  The port is not up or the POST has  Off  failed  The port operates at a rate of 1000  On  Mbps  Data is transmitted o
                    
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                          1000Base-X SFP Interface Status LED      For 3Com Baseline Switch 2928-PWR Plus and 3Com Baseline Switch 2928-HPWR Plus, the port  mode switching button does not take effect for the 1000Base-X SFP interface LEDs.    Table 1-10 1000Base-X SFP interface status LEDs description  LED Meaning  The port operates at a rate of 1000 Mbps  Solid green  The port is transmitting data at 1000 Mbps  Blinking green The LED is fast blinking when data is being received on the port.  Off No link is present on t
                    
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                          2  Installation Preparations  Safety Precautions  To avoid any device impairment and bodily injury caused by improper use, observe these rules:   Before cleaning the switch, plug out the power cord of the switch first. Do not clean the switch with  wet cloth or liquid.    Do not place the switch near water or in a damp environment. Prevent water or moisture from  entering the switch chassis.    Do not place the switch on an unstable case or desk. The switch might be damaged severely in  case o