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тАО02-22-2011 04:25 AM
тАО02-22-2011 04:25 AM
Pinning down cause of high CPU on core switch.
There is nothing in the switch event log that seems to coincide with the times that this happening.
Does anyone have any tips or methods to try and pin down the cause?
Thanks.
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тАО02-22-2011 08:46 AM
тАО02-22-2011 08:46 AM
Re: Pinning down cause of high CPU on core switch.
config)#spanning-tree
your switch between have many active connection
enable spanning-tree after
show spanning-tree command
you can see blocked state port
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тАО02-22-2011 09:56 AM
тАО02-22-2011 09:56 AM
Re: Pinning down cause of high CPU on core switch.
I did as you said, as we already have STP enabled.
I can't see that any ports have been blocked. I have attached the output from 'sh spanning-tree'
However, looking at the switch log, I can see one port is repeatably being blocked by STP:
=
I 02/22/11 09:41:02 00077 ports: port H18 is now off-line
I 02/22/11 09:41:04 00435 ports: port H18 is Blocked by STP
I 02/22/11 09:41:04 00076 ports: port H18 is now on-line
Do you think this is the cause?
Thanks.
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тАО02-23-2011 01:04 AM
тАО02-23-2011 01:04 AM
Re: Pinning down cause of high CPU on core switch.
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тАО02-23-2011 01:13 AM
тАО02-23-2011 01:13 AM
Re: Pinning down cause of high CPU on core switch.
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тАО02-23-2011 02:18 AM
тАО02-23-2011 02:18 AM
Re: Pinning down cause of high CPU on core switch.
may be software bug
can you upgrade switch K15020005
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тАО02-24-2011 12:53 AM
тАО02-24-2011 12:53 AM
Re: Pinning down cause of high CPU on core switch.
Hopefully this will fix it for us!
Will update here once we've done the upgrade.