Hi All,

Question on rp-announce-filter feature: The doc CD suggests in the cmd ref
config example that the rp-list ACL referenced in the rp-announce-filter
command identify the RPs to be permitted, but in reality it seems the
rp-list ACL defined the RP's to be filtered.

Per the docCD (
http://www.cisco.com/en/US/docs/ios-xml/ios/ipmulti/command/imc_i3.html#GUID-6F02D9FD-7F72-413C-B893-A8766B87F3D7),
it says the following:

The following example shows how to configure the router to *accept RP
> announcements from the C-RPs defined in access list 1* for the group
> range defined in access list 2:
> ip pim rp-announce-filter rp-list 1 group-list 2
> access-list 1 permit 10.0.0.1
> access-list 1 permit 10.0.0.2
> access-list 2 permit 224.0.0.0 15.255.255.255


However, when I tried this with a "deny" for a C-RP I didn't want to be
elected, it backfired and the Mapping Agent only accepted announcements
from that one. When I switched to a "permit" statement for that C-RP and
the implicit 'deny any', then it worked as I wanted, filtering out only the
identified C-RP.

So is the example wrong? The cmd ref is not particularly clear. But it
*seems* as though the rp-list is actually used the match the C-RPs that
will be filtered, and thus a C-RP is accepted by denying it from the ACL.

Can anyone confirm my understanding and whether the DocCD example is just
wrong?

Thanks!
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