Error in Switch 3560

[majed.balsharaf]

Hi,

   My switch is getting restarted and the error shown is :

System returned to ROM by error - Debug Exception (Could be NULL pointer dereference)

[Reza Sharifi · Accepted solution]

Hi Majed,

It could be a bug in the IOS version you are running.  Here is the bug info:

The recommendation is to upgrade to different version of IOS.  So, try a new version of IOS and see if the problem goes away.

Conditions:

The Catalyst 3560 switch is running Cisco IOS 12.2(20)SE4 (and later)

and PD is detected/classified as "overcurrent class". This problem won't happen

with latest images starting from 12.2(25)SEA

Workaround:

Do NOT connect 802.3af non-standard class PDs or even bad/loopback cables

(as their class can be incorrectly detected) to the switch

HTH

[majed.balsharaf]

Hi Reza

The IOS image is

c3560-ipbase-mz.122-25.SEB4.bin

And it was running fine since 6months. Today suddenly it got restarted two times the switch. And its showing me this error.

[Reza Sharifi]

Majed,

Here is the bug id (CSCsa72400) that is associated with this version.  Go ahead and download a newer version like 12.2(50) or later and load it to your switch.That should resolve your issue.

Good Luck

Reza

[majed.balsharaf]

Thanks I will update and let you know