[mrtg] Re: BGP Monitoring MRTG
simon at limmat.switch.ch
Tue Oct 23 13:25:47 MEST 2001
>>>>> "dm" == David Manchado <dmanchado at eurociber.es> writes:
> I want to monitor BGP4 Prefixes on a Cisco Router. This router
> supports over 10 BGP sessions and I'd like to graph how many
> prefixes anounces each AS/BGP Session, is this posible; or can I
> know the whole amount prefixes anounces by all the BGP sessions at
Unfortunately neither of this can be found directly in the current BGP
MIB (RFC1657) or in any Cisco MIB I know of.
However, the current Internet-Draft proposal for an improved
replacement for RFC1657 includes a table `bgpPrefixCountersTable',
which has per-peer (and per-address family) counters of prefixes
received, sent, withdraws received, withdraws sent, in-RIB, accepted,
and rejected. See e.g.
(should soon be replaced with a -01 or -02 version).
> I've found BGP4-MIB.my and I use the LoadMIBs command (LoadMIBs:
> /path/BGP4-MIB.my); I always get the same error: Expected number but get ""
> How can I implement this? Do I have to write an external script and
> link it to MRTG or I can write down a .cfg file?
Unfortunately this isn't really possible using SNMP requests yet, at
least not with standard MIBs. So you can either write a script that
gets this information by telnetting to the router and parsing "show
ip bgp summary" output, or wait until Cisco starts implementing the
new BGP-4 MIB.
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