Re: ip multicast boundary [filter-autorp]

From: Petr Lapukhov (petr@internetworkexpert.com)
Date: Fri Sep 01 2006 - 05:32:17 ART

Hi Tim,

the idea is that filter-autorp filters "denied" groups from Auto-RP
messages, hence permitting Auto-RP announces to pass-through
boundary, but cutting out certain unwanted groups.

HTH

2006/9/1, Tim Chan <timanji@yahoo.com>:
>
> 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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-- 
Petr Lapukhov, CCIE #16379
petr@internetworkexpert.com

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