All things related to multicast

[John Kristoff <>]

On Thu, 25 May 2006 12:11:16 -0400
Matthew Davy 
<>
 wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> NEW ABILENE MSDP FILTER
> 
>    sources:
>      (0.0.0.0/0,*)          Link Local Addresses

Do you mean 0.0.0.0/32 or perhaps even the entire reserved block of
0.0.0.0/8?

Bill's draft and Cisco list are not so up to date considering the
multicast swamp gets polluted quicker than anyone would like and I
am not actively maintaining the page I started for hardening anymore.
It sort of depends on where your priorities are for filtering.  If
you want to cut down on bogus MSDPs, clearly filtering the reserved
/8's are going to make a much bigger difference than the control
plan overlapping /24's, but if you want be conservative then maybe
focus on rate limiting strategies to minimize state and flooding
explosion?

John