ip multicast boundary [filter-autorp]

From: Tim Chan (timanji@yahoo.com)
Date: Fri Sep 01 2006 - 05:06:40 ART


Hi all,

I'm not 100% sure what the "filter-autorp" keyword means.

It's applied after the acl, so does that mean that for those prefixes in the acl
it will also block auto-rp messages for those specific prefixes?

So if I'm trying to block auto-rp messages from being sent out to a backbone
router...are these the same then?

access-list 10 deny 224.0.1.39
access-list 10 deny 224.0.1.40
access-list 10 permit any
!
interface ethernet 0/0
  ip multicast boundary 10

vs.

access-list 10 deny 224.0.0.0 15.255.255.255
access-list 10 permit any
!
interface ethernet 0/0
  ip multicast boundary 10 filter-autorp

Any comments would be helpful..
-tim



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