[mrtg] OIDs changing.
mrtg at dandoore.com
Sat Sep 1 11:09:21 CEST 2007
> Recently I was amazed to see few things in the devices I was using MRTG for.
> First, I have two cisco uBR 7200 with same IOS version and same model
> but the OIDs in them for same datas to are to be retrieved are different
> in the leaf OIDs whereas the branch OID is the same.
> i mean if 184.108.40.206.220.127.116.11.18.104.22.168 was for one than
> 22.214.171.124.126.96.36.199.188.8.131.52 was for the other..
> Second thing is one of the device got automatically rebooted because of
> some power failure lately, and i was unable to see MRTG graphs for few
> of the datas polled. Upon further diagnose i found that the leaf OIDs
> have increased with two
> i mean if 184.108.40.206.220.127.116.11.18.104.22.168 was the OID that was polled than after
> the reboot it wasnt existing and 22.214.171.124.126.96.36.199.188.8.131.52 was the one
> that was providing the necessary values.
> Has any one came across this type of situations before...please do share..
> Does the OIDs get changed so abnormally or is it because of some faults
> in the device.
You'll need to add the following config to your cisco routers:
snmp-server ifindex persist
and this will stop the interfaces from changing OID's.
for more info.
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