HP A5500 / 3COM 4800G reboot/crash

[Butch3r]

Hello. We using stack of 2 3com 4800G.

Month ago stack-master start reboot every 24 hour. Sometimes, when switch 1 reboots and 2 switch comes master, 2 switch also goes to reboot.

In syslog there is no information about reasons of it.

di ver
3Com Corporation
Switch 4800G 24-Port SFP Software Version 5.20 Release 2208
Copyright (c) 2004-2010 3Com Corp. and its licensors. All rights reserved.
Switch 4800G 24-Port SFP uptime is 0 week, 0 day, 1 hour, 42 minutes

Switch 4800G 24-Port SFP with 1 Processor
256M    bytes SDRAM
32768K  bytes Flash Memory

Hardware Version is REV.C
CPLD Version is 002
Bootrom Version is 702
[SubSlot 0] 24SFP+8GE Hardware Version is REV.C
[SubSlot 1] 2 CX4 Hardware Version is REV.A
[SubSlot 2] 2 SFP+ Hardware Version is REV.A

 First of all I will update firmware to latest release.

But how I can debug it? How I can recieve logs with reasons of reboots?

[paulgear]

Hi Butch3r,

I'm pretty sure the switch log buffer is non-volatile, so if you're expecting anything to be in the buffer after it reboots, I think you'll be disappointed. Try adding a remote syslog server to ensure that log messages are captured.

If you don't see anything on the syslog server and you haven't done any customisations that might trigger on a 24-hour interval, I would be logging a hardware RMA with HP; your switch should never do this.

[Butch3r · Accepted solution]

Looks like problem solved by updating firmware.

di ver
3Com Corporation
Switch 4800G 24-Port SFP Software Version 5.20 Release 2221P01
Copyright (c) 2004-2014 3Com Corp. and its licensors. All rights reserved.
Switch 4800G 24-Port SFP uptime is 0 week, 5 days, 4 hours, 52 minutes

Switch 4800G 24-Port SFP with 1 Processor
256M    bytes SDRAM
32768K  bytes Flash Memory

Hardware Version is REV.C
CPLD Version is 002
Bootrom Version is 721
[SubSlot 0] 24SFP+8GE Hardware Version is REV.C
[SubSlot 1] 2 CX4 Hardware Version is REV.A
[SubSlot 2] 2 SFP+ Hardware Version is REV.A