8600 Acting Weird

[leedsit]

Hi,

Anyone seen this kind of behavour before. Im pinging our 8600, check out the response time in MS.... see a pattern?

Direct link incase my Picture link does not work

http://img136.imageshack.us/my.php?image=strangepg6.jpg

LEEroy
MCNE6,CCNP,CWNA,CCSA,Project+

 

[anthonyanderberg]

Wow, that's weird. The other day I was lamenting that fact that an issue I was working on didn't seem to have any patterns... guess we should be careful what we wish for...

Are pings through this box to other devices affected, or is it just the management IP of the box? If so does it matter if you're making a L2 or L3 hop? If its just the 8600 itself and you have multiple IP interfaces are they all affected? And of course all the usual questions about anything that might have changed and when you noticed this apply...

 

[telecom116]

Have you used MRTG or something similar to graph the CPU load?

Do you have a second CPU blade to swap to?

 

[VOIPaintEASY]

I could not see the pings. Dont grade an 8600 by pings to the MGMT or an interface address. ICMP reply is very low on its priority list. Instead ping a directly attached device IP. You are most concerned with forwarding performance remember. (I thought the same thing 3 years ago when we got our 8600's)

 

[leedsit]

Hi,

Thanks for your input on this, Looked to be a bug on my PC.... Pinging to other devices started to do the Same. A reboot fixed ( + an agressive virus check just in case ).

Thanks, Lee

LEEroy
MCNE6,CCNP,CWNA,CCSA,Project+

 

[Kwazzy]

If you ever think you are having an issue with your 8600, do this command, and do it repeativly for about a minute.

show sys perf

This will post your CPU Utilization. If you run high (70% or more) for more than one minute, you may have performance issues on the box. If you have a script that you can run against this, this is something you can use to monitor you boxes. You could say it is one of the better tell tale signs of a problem, rather than relying on a ping.

 

[anthonyanderberg]

You can also use SNMP to monitor/graph the perf stats, although some older microcode only reported numbers from the primary CPU module. Here's the OIDs:

Temperature: 1.3.6.1.4.1.2272.1.100.1.2.0

Primary CPU Percent: 1.3.6.1.4.1.2272.1.1.20.0
Secondary CPU Percent: 1.3.6.1.4.1.2272.1.1.44.0

Memory total: 1.3.6.1.4.1.2272.1.1.46.0
Memory used: 1.3.6.1.4.1.2272.1.1.47.0
Memory free: 1.3.6.1.4.1.2272.1.1.48.0

Primary Switch Fabric Percent: 1.3.6.1.4.1.2272.1.1.21.0
Secondary Switch Fabric Percent: 1.3.6.1.4.1.2272.1.1.45.0

Prinary Buffer Percent: 1.3.6.1.4.1.2272.1.1.13.0
Secondary Buffer Percent: 1.3.6.1.4.1.2272.1.1.41.0