[c-nsp] Graphing more than 114Mbps with mrtg
marcel at support.net
Fri Oct 29 04:36:17 EDT 2004
the problem is the 32bit counter. The counters are switching back to 0 to
fast. You should use 64bit counters which are available on most cisco's.
For the catalyst we use: 18.104.22.168.22.214.171.124.1.1.1
For the routers we use: 126.96.36.199.188.8.131.52.1.1.$val.$if
where $val is incoming or outgoing and $if the interface number.
You can do a snmpbulkwalk and grep for 64 :)
Hope this helpes.
PS, try RRDBrowse (http://www.rrdbrowse.org) which has the right functions
and counters :)
With kind regards,
Support Net - Partner in Managed Internet Solutions
--- The previous message was something like this: ---
!>Date: Fri, 29 Oct 2004 09:24:36 +0100
!>From: Mark Taylor <maillist at smashie.ision.co.uk>
!>To: cisco-nsp at puck.nether.net
!>Subject: [c-nsp] Graphing more than 114Mbps with mrtg
!>Without meaning to turn the list into an mrtg forum :)
!>I don't seem to be able to graph interface transfer rates above 114Mbps with
!>mrtg. I think this is because the cisco counter
!>interfaces.ifTable.ifEntry.ifInOctets.x wraps back to the start within the 5
!>minute collector period at rates above this. Does anybody know how to solve
!>Temporarily I'm collecting the data more often before the counters wrap. Is
!>there a different OID that I need to use? Or do I need to configure
!>something within the snmp-server on the cisco to use a bigger counter size?
!>I have the same issue on Cisco IOS routers/switches and also CatOS switches.
!>Any suggestions greatly appreciated,
!>cisco-nsp mailing list cisco-nsp at puck.nether.net
!>archive at http://puck.nether.net/pipermail/cisco-nsp/
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