How dows one go about handlingSNMP OID of interfaces changes

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alform2000
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Joined: Fri Nov 11, 2011 5:41 am

How dows one go about handlingSNMP OID of interfaces changes

Post by alform2000 »

Greetings.
It is a sad fact of life that SNMP OIDs of network interface for a wide variety of interface can and DO change across reboots, OS/Firmware upgrades etc.
In MRTG one could specify interfaces by IP, but i appears that cacti cannot. Ouch. Manual tracking of the changes *NOT* being an option (I monitor hundresds of devices) , how to cope with this? I'd be willing to run a cron script on a few minute basis and upgrade the graphs definition, but cacti internal are a deep mistery to me.....

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paulgevers
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Re: How dows one go about handlingSNMP OID of interfaces cha

Post by paulgevers »

I really haven't every looked at it, but isn't the autom8 plugin what you are looking for?
Maintainer of cacti in Debian (and Ubuntu).
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gandalf
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Re: How dows one go about handlingSNMP OID of interfaces cha

Post by gandalf »

We usually keep those interfaces by using ifDescr as the "real" index. This is done by

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<index_order>ifDescr:ifName:ifHwAddr:ifIndex</index_order>
in the XML.
Not verified, but when moving the ifIP in front of that, you _may_ receive what you want. Don't flame me, if I'm wrong
R.
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