I am building a network monitoring system using RTG (rtg.sourceforge.net), which polls interfaces over SNMP, based on the interface index. Since interface numbers tend to change after reboots etc. on several Cisco devices / IOSes, data returned by the devices gets mixed in the database (ie. interfaces / results don't match anymore).
I'm looking into solving this problem. Having tested a 1721 (IOS12.2(13)ZH5), I can say the command snmp-server ifindex persist works perfect - interface indexes actually persist after a cold boot and even after adding / removing WICs.
I must know on which devices / IOSes this command is available and is known to work properly, but testing everything by hand takes a lot of time and effort.
Does anybody have information or links to documentation on this subject?
Any input would be greatly appreciated!
Willem Vervuurt The Network Factory (The Netherlands)