Unable to manage 4200 (50-ports)

[proboard]

Hello,


 

I have 3com switch (4200) 50-port and it's not work. It's don't pass self test and reboot every 12 seconds. 

It can't get IP from DHCP, i can't login into web-interface on default ip(169.254.100.100) too. I hope that via console port i'll can manage this, but i wrong.

Via console this switch before rebooting write this message:

------------------------------------------------------------------------------------

exception level not handled 00000004





***** STOPPED ******


at : fffffff8 v0 : 00804017 v1 : 00800017 a0 : 00000000 a1 : c0000000 a2 : 00800017 a3 : 00804017


t0 : 20000000 t1 : 03ffffff t2 : 00020100 t3 : 00000800 t4 : aa55aa55 t5 : 00000010 t6 : 00000010 t7 : 0a6870c3


s0 : 0000e23d s1 : 80256334 s2 : ffffafff s3 : ff7debff s4 : fffbefff s5 : ffffefff s6 : ffbfefbf s7 : ffffefff


t8 : 00000001 t9 : efffefff k0 : 9fc15720 k1 : 00000000 gp : fff7e77e sp : 8000ffdc s8 : 8000ff2c ra : a0206b14


epc : a0206b9c


Status: 10400002


Cause : 00000010


badvaddr : 0000e23d


 

------------------------------------------------------------------------------------

I don't know what does it mean, and google search about this nothing.

Please, give me advice! Is it possible to make it alive or no?

Thanks!

[Fred_Mancen_1]

I would suggest you to try to break the boot sequence using CTRL+B keys, then upload a new firmware version using the X-Modem option at the maximum console speed (115000bps). Remember to set the new boot firmware before reboot the switch after finished the update.

HTH