mapping agent filtering

From: Imran Ali <immrccie_at_gmail.com>
Date: Mon, 25 Mar 2013 23:02:14 +0300

Hi all.

i have a basic topology ... R3------R1

R3 is advertising himself as rp for complete block ...
ip pim send-rp-announce lo 0 scope 10 interval 5

R1 the mapping agent ..wants to filter groups from R3 ...ie R3 sould
only service 232.0.0.0 7.255.255.255

so here what i did on R1 the MA
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.

R1(config)#access-list 2 deny 224.0.0.0 7.255.255.255

R1(config)#access-list 2 permit 232.0.0.0 7.255.255.255
R1(config)#exit

ip pim autorp listener
ip pim send-rp-discovery FastEthernet0/0 scope 10
ip pim rp-announce-filter rp-list 1 group-list 2

R1#show ip pim rp map

PIM Group-to-RP Mappings
This system is an RP-mapping agent (FastEthernet0/0)
R1#show ip pim rp map

PIM Group-to-RP Mappings
This system is an RP-mapping agent (FastEthernet0/0)

R1#show access-lists
Standard IP access list 1
    10 permit 13.0.0.3 (140 matches)

Standard IP access list 2
    10 deny 224.0.0.0, wildcard bits 7.255.255.255 (20 matches)
    20 permit 232.0.0.0, wildcard bits 7.255.255.255

As you can see denying only a subset of 224.0.0.0 is making it
deny complete block ...

is this normal behavior ??

Can any one try the same requirmnet and see if it works

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Received on Mon Mar 25 2013 - 23:02:14 ART

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