[mrtg] Re: multicast OIDs?

[Simon Leinen]

Antonio,

>>>>> "aq" == Antonio Querubin <tony at lava.net> writes:
> Does anybody know if there are alternate OIDs for tracking multicast
> traffic other than:

> ifInNUcastPkts  1.3.6.1.2.1.2.2.1.12
> ifOutNUcastPkts 1.3.6.1.2.1.2.2.1.18

Cisco implements something called IPMROUTE-MIB.  This has been
developed within the IETF, but somehow never reached RFC status.  I
don't know whether it just died, or whether it was replaced with other
documents.  Anyway, you can use that to retrieve multicast traffic
counters.

ipMRouteInterfaceInMcastOctets and ipMRouteInterfaceOutMcastOctets are
per-interface counters.  I have a somewhat Perl script (using the SNMP
library that comes with MRTG) which can be used to generate MRTG
configuration for per-interface multicast traffic counting for all
multicast-capable interfaces on a given set of routers.  I'm attaching
it for everybody's edification/amusement.

Using the ipMRouteOctets counter, you could even draw MRTG graphs for
individual senders to individual groups!

Hope this helps,
-- 
Simon.


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