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тАО11-23-2008 11:54 PM
тАО11-23-2008 11:54 PM
i just started to try out thr PCM+, first look ws nice, but actually cpu load on some of our 2524 switches was rising up to 99%!
Exspecially on two of them this happened, so i excluded them from the device list in PCM:
same result, it still rises the cpu load.
I have to end the complete services, to stop this.
Is this a known bug?
Any ideas how to solve it?
Regards
Rainer
Solved! Go to Solution.
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тАО11-24-2008 04:57 AM
тАО11-24-2008 04:57 AM
Re: PCM+ brings high CPU load to 2524 switches
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тАО11-24-2008 05:18 AM
тАО11-24-2008 05:18 AM
Re: PCM+ brings high CPU load to 2524 switches
on some 2500s it works without problems, just 2 or 3 of them have the problem.
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тАО11-24-2008 08:08 AM
тАО11-24-2008 08:08 AM
Re: PCM+ brings high CPU load to 2524 switches
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тАО11-24-2008 09:34 AM
тАО11-24-2008 09:34 AM
SolutionYou can still monitor traffic on these switches without sampling by manually requesting that only statistics monitoring be performed on them. In the PCM Traffic tab, order the ports shown by IP so that the ports for the devices under discussion are all grouped. Then select all of them in a block and right-mouse on the selected group, choose "Manual" from the dropdown menu, and then "Manually enable statistics" from the next dropdown that cascades.
This will ensure that PCM doesn't try to sample on the ports from the 2524s that you're concerned about. Of course you won't see traffic content in your Top Talkers anymore, just the "envelope" of the traffic showing you how much occurred in each Top Talkers category, but it still provides some level of visibility.
Regards,
SVB
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тАО11-25-2008 04:33 AM
тАО11-25-2008 04:33 AM
Re: PCM+ brings high CPU load to 2524 switches
i found this in help:
The traffic sampling collection utilizes a standard called sFlow (RFC 3176) in newer ProCurve devices; in older devices, HP Extended RMON (XRMON), is employed.
I did as you said: the result ist good, no more cpu stress.
So it seems to me, the sflow is stressing the switch.
We had the phenonema before, when activating sflow on the core switches, with the result, that they suddenly crashed... Disabling helped.
I dont understand it anyway, why this is so stressing...
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тАО11-26-2008 04:08 AM
тАО11-26-2008 04:08 AM
Re: PCM+ brings high CPU load to 2524 switches
2500 supports: XRMON
2600: RMON
4100: RMON
so PCM would not make too much sense in our environment, i guess.
regards
rainer