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Cisco ME 3800X and 3600X Switch Software Configuration Guide
OL-23400-01
Chapter 33 Configuring IP Multicast Routing
Configuring IP Multicast Routing
To remove a filter on incoming RP announcement messages, use the no ip pim rp-announce-filter
rp-list access-list-number [group-list access-list-number] global configuration command.
This example shows a sample configuration on an Auto-RP mapping agent that is used to prevent
candidate RP announcements from being accepted from unauthorized candidate RPs:
Switch(config)#
ip pim rp-announce-filter rp-list 10 group-list 20
Switch(config)#
access-list 10 permit host 172.16.5.1
Switch(config)#
access-list 10 permit host 172.16.2.1
Switch(config)#
access-list 20 deny 239.0.0.0 0.0.255.255
Switch(config)#
access-list 20 permit 224.0.0.0 15.255.255.255
In this example, the mapping agent accepts candidate RP announcements from only two devices,
172.16.5.1 and 172.16.2.1. The mapping agent accepts candidate RP announcements from these two
devices only for multicast groups that fall in the group range of 224.0.0.0 to 239.255.255.255. The
mapping agent does not accept candidate RP announcements from any other devices in the network.
Furthermore, the mapping agent does not accept candidate RP announcements from 172.16.5.1
or 172.16.2.1 if the announcements are for any groups in the 239.0.0.0 through 239.255.255.255 range.
This range is the administratively scoped address range.
Configuring PIMv2 BSR
These sections describe how to set up BSR in your PIMv2 network:
•
Defining the PIM Domain Border, page 33-28
(optional)
•
Defining the IP Multicast Boundary, page 33-29
(optional)
Step 3
access-list access-list-number {deny |
permit} source [source-wildcard]
Create a standard access list, repeating the command as many times as
necessary.
•
For access-list-number, enter the access list number specified in
Step 2.
•
The deny keyword denies access if the conditions are matched.
The permit keyword permits access if the conditions are matched.
•
Create an access list that specifies from which routers and
multilayer switches the mapping agent accepts candidate RP
announcements (rp-list ACL).
•
Create an access list that specifies the range of multicast groups
from which to accept or deny (group-list ACL).
•
For source, enter the multicast group address range for which the
RP should be used.
•
(Optional) For source-wildcard, enter the wildcard bits in dotted
decimal notation to be applied to the source. Place ones in the bit
positions that you want to ignore.
Recall that the access list is always terminated by an implicit deny
statement for everything.
Step 4
end
Return to privileged EXEC mode.
Step 5
show running-config
Verify your entries.
Step 6
copy running-config startup-config
(Optional) Save your entries in the configuration file.
Command
Purpose
