catalyst 4500 switch freezes

[o.osunkiyesi]

Hi All

I have a catalyst 4500 switch on my network, fairly new, its actually not up to a year old and its running on IOS version 12.2(31)SG.

Couple of days ago, it just frooze out, and the whole network grounded to a halt, i could not console into or get into it in any other way at all

I eventually had to reboot it to be able to access it and resolve the problem.

4500s are supoosed to be rugged, does anybody has a clue/solution?

[Collin Clark]

look in the flash (dir) and see if there is a crash dump. If there is open a TAC case and submit it. They'll be able to tell you whats wrong.

[o.osunkiyesi]

I already checked it no crash info (

Last crash: never), any other clues/suggestions please?

[Collin Clark]

The next thing I would check is for bugs in that version of code. You can do that at http://tools.cisco.com/Support/BugToolKit/ It does require CCO login. Do you have the switch reporting to SYSLOG?

[glen.grant]

Once you reboot you lose all the logg info so it would just be speculation at this point, could have been someone plugged in something they shouldn't and caused a bridging loop and this could cause it to drive the cpu to saturation so it looked like it hung , just speculation though .