There are serveral ways but, if you have a serial console cable you can set the IP using the following process:

  1. Get a serial console cable.  Note that I went through several of them before I found one that would let me SEND characters to the device; I could see the switches boot activity but nothing I typed would appear on the console window… so if you have this problem, get another cable!
  2. Get a terminal program.  Windows Vista and 7 removed HyperTerminal (which is quite annoying) but you can download a free, fully functional version for 30 days from .
  3. Start your HyperTerminal using the following settings: connect using COM1 (or whatever port you are using) 19 200 bits/sec 8 data bits No parity 1 stop bit No flow control
  4. Power up your 4200G (or similar aged 3Com switch)
  5. In the Hyperterminal Window you will see something like, and you will have just a second or two press CONTROL+B to enter the book menu:

    * * * Switch 4200G 24-Port BOOTROM, Version 1.00
    * * * ***********************************************************
    Copyright (c) 2004-2005
    3Com Corporation and its licensors.

    Creation date : Nov 20 2006, 17:02:48
    PU type : BCM5836

    CPU Clock Speed : 200MHz
    BUS Clock Speed : 33MHz

    Memory Size : 64MB

    Mac Address : 0017e01f7a40
    Press Ctrl-B to enter Boot Menu… 2
  6. type:
    system-view <enter>
    interface vlan 1 <enter>  
    ip address mmm.mmm.mmm.mmm <enter>  
    save <enter>  
  7. type
    quit <enter>  

Note that the X’s are the address you want to assign and the M’s are the subnet which is often



jameel · July 8, 2020 at 6:33 am

3Com 2024 Baseline 24 Port Switch 3C16471 how change ip address

jameel · July 8, 2020 at 6:32 am

i have 3com BB 2024 3c1671

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