Собственно достался в наследство управляемый switch. Есть его MAC.
Ни ip, ни паролей нет.
Как жить дальше? уже час около него пляшу..

нажать на кнопку reset ?

http://knowledge.3com.com/service/main.jsp;jsessionid=B6D0CE3F8B700AE2473F42F7129D2DB5.selfservice1?t=solutionTab&ft=searchTab&ps=solutionPanels&locale=en_US&_dyncharset=UTF-8&curResURL=%2Fservice%2Fmain.jsp%3Bjsessionid%3DB6D0CE3F8B700AE2473F42F7129D2DB5.selfservice1%3Ft%3DsearchTab%26locale%3Den_US%26_dyncharset%3DUTF-8%26SearchButton%3DFind%26topicName%3D%26searchstring%3D4800G%252520-%252520Error%253a%252520The%252520device%252520is%252520not%252520in%252520the%252520current%252520IRF%26useFocusTopic%3Dtrue%26focusTopic%3D9030911%26sfield%3D%26dosearch%3Dtrue%26pn%3D1&solutionId=927&isSrch=Yes

(1) не имеется таковой..

пробовал: arp -a любой_ip MAC_Switch'a не помогает.. не пингуется и все..

Problem Description :
   No access to the 4200G because the password is incorrect
Product Model # :

   3CR17660-91 - 3Com® Switch 4200G 12-Port
   3CR17661-91 - 3Com® Switch 4200G 24-Port
   3CR17671-91 - 3Com® Switch 4200G PWR 24-Port
   3CR17662-91 - 3Com® Switch 4200G 48-Port
Software / Firmware version :
   BOOTROM Version 2.00
Fact :
   No access to the unit using the password
   No Web Access to manage page
   Forgot password
   Password Recovery
Fix :
   1) Get access by console
   2) Reboot the unit
   3) Press Ctrl-B to enter Boot Menu
   4) Enter your choice(0-9): 7
   5) Are you sure you want to skip current configuration file when reboot? Yes or No [Y/N] y
   6) Enter your choice(0-9): 0
   
   
   Starting......
   
    ***********************************************************
    *                                                                                  *
    * Switch 4200G 12-Port BOOTROM, Version 2.00    *
    *                                                                                  *
    ***********************************************************

               Copyright (c) 2004-2007 3Com Corporation and its licensors.
               Creation date   : Nov 20 2007, 17:02:48
               CPU Clock Speed : 200MHz
               BUS Clock Speed : 33MHz
               Memory Size     : 64MB
               Mac Address     : 0016e01f7240
   
   Press Ctrl-B to enter Boot Menu... 1
   
   password:  (NONE PASSWORD DEFAULT)
   

    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 bootrom password
   6. Enter bootrom upgrade menu
   7. Skip current configuration file
   8. Set bootrom password recovery
   9. Set switch startup mode
   0. Reboot

   Enter your choice(0-9): 7
   The current setting will boot with current configuration file when rebooted.
   Are you sure you want to skip current configuration file when reboot? Yes or No [Y/N] y
   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 bootrom password
   6. Enter bootrom upgrade menu
   7. Skip current configuration file
   8. Set bootrom password recoverys
   9. Set switch startup mode
   0. Reboot

   Enter your choice(0-9): 0
   

   Starting......
   
   ***********************************************************
   *                                                                                       *
   *  Switch 4200G 12-Port BOOTROM, Version 2.00        *
   *                                                                                       *
   ***********************************************************

               Copyright (c) 2004-2007 3Com Corporation and its licensors.
               Creation date   : Nov 20 2007, 17:02:48
               CPU Clock Speed : 200MHz
               BUS Clock Speed : 33MHz
               Memory Size     : 64MB
               Mac Address     : 0016e01f7240
   
   Press Ctrl-B to enter Boot Menu... 1   0
   Auto-booting...
   Decompress Image.......................................................................................................................................................................................................................................................................................................................................................................................OK!
   Starting at 0x80100000...

   Startup configuration is skipped.
   User interface aux0 is available.
   
   Press ENTER to get started.
   <4200G>
   %Apr  1 23:55:33:358 2000 4200G SHELL/5/LOGIN:- 1 - Console(aux0) in unit1 login

отпишись: помогло или нет