Campus Manager Data Collection

Answered Question
Jul 21st, 2008
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Does anyone have a problem with Data Collection running a extremely long time.

I only have 300 devices managed and no IP Phones but collection takes 2-3 hours or more to complete. The version I'm running is 5.0.3

Correct Answer by Joe Clarke about 9 years 1 week ago

If the device IDs changed, then the devices will not be laid out the same way as before. There is no way to fix that except to manually re-arrange the map.

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Joe Clarke Mon, 07/21/2008 - 09:08
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Data Collection running for a long time could be caused by a few things.


* SNMPv3 in use, but not SNMP contexts for VLAN polling have been configured (thus STP collection will take a long time)


* Numerous unreachable devices, and the SNMP timeouts and retries are high (by default, Campus has a six second timeout with one retry; this will result in a max of 18 seconds per device)


* SNMP community strings which contain '@' ('@' is an invalid character for SNMP community strings on Cisco switches)


* Busy or underpowered server (for this network, your server needs at least 4 GB of RAM and 8 GB of swap; if DFM is on this server, you'll need at least two cores as well)


* Slow network resulting in SNMP polls that don't timeout, but take a long time to return


Those are the most common.

dionjiles Mon, 07/21/2008 - 09:31
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Thanks JClarke,


You seem to have all the right answers.....our read-write community string has an '@'


This is very interesting I guess my next project is to change this.

dionjiles Mon, 07/21/2008 - 09:51
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I had to re-run device discovery to get those devices in Campus Collection as well. All my maps are gone that I had saved for some reason. Is there any way to get around that?


I know that's completely off topic from my initial issue.

Correct Answer
Joe Clarke Mon, 07/21/2008 - 09:54
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If the device IDs changed, then the devices will not be laid out the same way as before. There is no way to fix that except to manually re-arrange the map.

dionjiles Mon, 07/21/2008 - 10:05
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I was hoping you wouldn't say that. You would have been proud on the way I had the maps looking :)


Thanks for the info.

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