3Com 2900 - Manual

i Table of Contents 1 Product Overview ······································································································································ 1-1 Introduction ·············································································································...

ii Laser Safety ····································································································································2-2 Installation Tools ·································································································································...

1-1 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. Wit...

1-3 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 3C...

1-4 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 Pl...

1-5 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 port (2) 10/100/1000Base-T auto-sensing Ethernet port status LED (3) Console port (4) Power LED (Power) (5) 1000Base-X SFP interface (6) 1000Base-X...

1-6 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...

1-7 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 p...

1-8 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 dissip...

1-10 LEDs Table 1-5 LEDs LED Device support Description Power LED All series See “ Power LED ” on page 1-10 . RPS status LED 3Com Baseline Switch 2928-HPWR Plus See “ RPS Status LED ” on page 1-10 . Port mode LED 3Com Baseline Switch 2928-PWR Plus and 3Com Baseline Switch 2928-HPWR Plus See “ Port M...

1-11 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 ...

1-13 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 Solid green The ...

2-1 2 Installation Preparations Safety Precautions To avoid any device impairment and bodily injury caused by improper use, observe these rules: z Before cleaning the switch, plug out the power cord of the switch first. Do not clean the switch with wet cloth or liquid. z Do not place the switch near...

2-2 Especially when the indoor relative humidity is low, electrostatic adsorption is more likely to happen. This can not only shorten the service life of your device but also cause communications failures. The following table lists the dust concentration limit. Table 2-1 Dust concentration limit in ...

2-3 When an SFP module on the 3Com Baseline Switch 2900 Family is operating, do not stare into the optical port because the laser light emitted from the optical fiber may hurt your eyes. Installation Tools z Flat-blade screwdriver z Phillips screwdriver z ESD-preventive wrist strap No installation t...

3-1 3 Installing a Switch On a mounting screw of the chassis of the 3Com series switches, there is a seal labeled. You need to keep it intact before asking the agent to maintain the switch. You need to get the permission of the local agent before you can open the chassis. Otherwise, you will be resp...

3-2 Figure 3-2 Two-holed mounting bracket (1) Screw hole used to fix the mounting bracket to the rack (with an M6 screw) (2) Screw hole used to fix the switch to the mounting bracket Figure 3-3 Four-holed mounting bracket (1) Screw hole used to fix the mounting bracket to the rack (with an M6 screw)...

3-4 Figure 3-6 Install a four-holed mounting bracket on the chassis (front mounting) Figure 3-7 Install a four-holed mounting bracket on the chassis (center mounting) Figure 3-8 Install a four-holed mounting bracket on the chassis (rear mounting) Mounting the Switch to a Rack Step1 Put on an ESD-pre...

3-6 Mounting the Switch on a Workbench In many cases, standard 19-inch cabinets are not available. Therefore, switches are often placed on clean workbenches. To place the switch on a workbench, follow these steps: Step1 Place the switch with bottom up carefully, and then clean the round holes on the...

3-8 z The PGND cables supplied with the 3Com Baseline Switch 2900 Family do not provide OT terminals at the ends connecting the grounding strip. You need to prepare proper OT terminals by yourself. z The fire main and lightning rod of a building are not suitable for grounding the switch. The PGND ca...

3-9 Figure 3-13 Ground through an AC power PE wire (1) Three-wire AC power input cable (2) Switch rear panel Use the PGND cable provided with the switch to connect the grounding strip in the equipment room. Otherwise, the grounding effect may not be ensured, which easily causes damage to the switch....

3-10 Make sure that the PGND cable has been properly connected before powering on the switch. Connecting an RPS DC Power Cord The 3Com Baseline Switch 2928-HPWR Plus also supports RPS DC power input with the input voltage ranging from –52 V to –55 V. Follow these steps to install a DC power cord: St...

4-1 4 Initial Power-On Setting Up the Configuration Environment Set up the configuration environment as follows: Connect a terminal (a PC in this example) to the console port on the switch with a console cable. Figure 4-1 Network diagram for configuration environment setup Connecting the Console Cab...

4-2 RJ-45 Signal Direction DB-9 3 TXD ← 3 4 CD → 1 5 GND — 5 6 RXD → 2 7 DSR → 6 8 CTS → 8 Connection Procedure When you want to use the terminal to configure the switch, follow these steps to connect a terminal device to the switch using the console cable: 1) Plug the DB-9 female connector of the c...

4-5 Step5 Click Properties in the HyperTerminal window to enter the Switch Properties dialog box. Click the Settings tab, set the emulation to VT100 , and then click OK . Figure 4-7 Set terminal emulation in Switch Properties dialog box Booting the Switch Checking Before Power-On Before powering on ...

4-7 Item Description 6. Enter BootRom upgrade menu Enter the Boot ROM update menu 7. Skip current system configuration Skip the current configuration file (this configuration is valid once) 8. Set BootRom password recovery Restore the Boot ROM password 9. Set switch startup mode Set the startup mode...

4-8 Are you sure you want to change it to full startup mode? Yes or No (Y/N): Enter Y . The system displays the following information: Setting...Done! BOOT MENU 1. Download application file to flash 2. Select application file to boot 3. Display all files in flash 4. Delete file from flash 5. Modify ...

4-9 CPLD selftest................................OK! Switch chip selftest.........................OK! PHY selftest.................................OK! Please check leds......................FINISHED! User interface aux0 is available. Press ENTER to get started. Press Enter and enter the correct user...

5-1 5 Loading Software Introduction The 3Com Baseline Switch 2900 Family does not provide independent Boot ROM program but integrates it with the application program in host software package with the extension name of .bin . z Loading application files: Download the host software package to the flas...

5-2 Introduction to the Boot ROM Menu Starting...... ************************************************************************ * * * 3COM 2928-SFP Plus BOOTROM, Version 102 * * * ************************************************************************ Creation Date : Jan 8 2009 CPU Type : ARM926 CPU ...

5-3 5. Modify BootRom password 6. Enter BootRom upgrade menu 7. Skip current system configuration 8. Set BootRom password recovery 9. Set switch startup mode 0. Reboot Enter your choice(0-9): The items in the Boot ROM menu are described in Table 4-2 z Currently, Boot ROM files are not provided separ...

5-7 Figure 5-2 Properties dialog box Figure 5-3 Modify the baud rate Step3 Select Call > Call to reestablish the connection.

5-9 Figure 5-6 File transmission dialog box Step2 Click Send . The following dialog box appears: Figure 5-7 Send the application file using XMODEM 8) Updating the Boot ROM file on the switch After the Boot ROM file is downloaded, the terminal displays the following information: Loading ...CCCC Done!...

5-10 Set the baud rate to 38400 bps (refer to “ Change the rate of the serial port on the terminal ” on page 5-6 for detailed operation). If you select 38400 bps as the download rate, skip this step, that is, you do not need to modify the baud rate of the HyperTerminal. 10) Restarting the switch to ...

5-11 Loading Files Using TFTP Through Ethernet Port Introductin to TFTP Trivial File Transfer Protocol (TFTP) is a TCP/IP protocol used for file transfer between client and server. It provides a simple and low-overhead file transfer service. TFTP provides unreliable data transfer over UDP. Loading a...

5-13 z Enter the file name and IP addresses based on the actual condition. z If the switch and the server are on the same network segment, you can specify any unused IP address of the network for the switch without specifying the gateway’s IP address; if they are not on the same segment, you need to...

5-14 The procedure of loading an application file is similar to that of loading a Boot ROM file. The difference lies in that the system displays the prompt of loading the application file rather than the Boot ROM file. After loading the application file, the switch displays that you should configure...

6-1 6 Maintenance and Troubleshooting File Loading Failure If file loading fails, the system runs steadily using the original system files. In this case, check whether the physical ports are properly connected. z If not, reconnect them correctly and restart the loading procedure. z If so, view the l...

6-2 Power Supply Failure The 3Com Baseline Switch 2928-HPWR Plus adopts AC power input, RPS power input, or both RPS and AC power inputs. Other 3Com Baseline Switch 2900 Family adopt AC power input only. You can determine whether the power system of a switch functions normally by viewing the power L...

6-3 z The RPS power input is normal. If the cause cannot be located in the preceding steps and the problem persists, contact your local sales agent or service engineer. Configuration Terminal Failure After the switch is powered on and the system is normal, the booting information will be displayed o...