[c-nsp] How to tune multicast RPF checking?

Pekka Savola pekkas at netcore.fi
Mon Nov 29 03:26:19 EST 2004

On Fri, 26 Nov 2004, Matti Saarinen wrote:
> Pekka Savola <pekkas at netcore.fi> writes:
>> You can specify the administrative distance with ip mroutes as well,
>> like 'ip mroute 250', but it might not
>> help you here.
> Unfortunately, this doesn't help me. I would need a method with which
> I could override the administrative distance of the default unicast
> route but all the more specific unicast routes should override the
> default mroute.

I happened to come across documentation which suggested the hidden 
command 'ip multicast longest-match' to achieve what you're looking. 
Check out if it works.

Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings

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