I am looking for a solution to get a graph for "sh ip bgp sum" routes into mrtg. Any sugestion how?

Regards Jan Rockstedt

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Depending on IOS version, you may be able use SNMP to get those parts of "sh ip bgp sum" output that you need. In particular, look at cbgpPeerAcceptedPrefixes[1] and similar objects in CISCO-BGP4-MIB.

IETF plug:

The current IETF BGP-4 MIB (RFC 4273, formerly known as RFC 1657) doesn't contain any similar metrics. The IETF idr (inter-domain routing) Working Group is in the process of defining a new version of the MIB ("bgp4-mibv2"). It would be very helpful if operators could say what kinds of counters they would find how useful. Ideally on the idr mailing list, see [2], but if you're too lazy to subscribe there, I'll channel any discussion that happens here. The current state of the BGP-4 MIBv2 effort can be found in [3].

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Simon Leinen

Thanks for the reply.

Our routers have this ios:

ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)

bgp-router uptime is 1 week, 1 day, 7 hours, 17 minutes System returned to ROM by reload at 08:33:22 UTC Wed May 16 2007 System image file is "flash:c3825-advipservicesk9-mz.124-11.XJ.bin"

I wan't to have State/PfxRcd into MRTG. Any sugestion for a conf or script?

Regards Jan Rockstedt

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That should have all the MIBs you need...

Sorry, nothing directly cut&pasteable. Basically, for a peer with the IPv4 address AAA.BBB.CCC.DDD, you can ask MRTG to plot the following OID in "gauge" mode: (cbgpPeerAcceptedPrefixes.ipv4.unicast.AAA.BBB.CCC.DDD)

That should show you the number of (IPv4 unicast) routes that your BGP router has accepted.

MRTG always likes plotting two values, but I cannot think of a commensurate second value, except maybe the prefix limit ("maximum-prefix") if you have those configured. The OID would be (cbgpPeerPrefixAdminLimit.ipv4.unicast.AAA.BBB.CCC.DDD)

Hope that helps,

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