Using Auto-Rp And A Bsr - Cisco 3845 - Security Bundle Router Software Manual
Software configuration guide
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Chapter 33
Configuring IP Multicast Routing
Beginning in privileged EXEC mode, follow these steps to configure your switch to advertise itself as a
PIMv2 candidate RP to the BSR. This procedure is optional.
Command
Step 1
configure terminal
Step 2
ip pim rp-candidate interface-id
[group-list access-list-number]
Step 3
access-list access-list-number {deny |
permit} source [source-wildcard]
Step 4
end
Step 5
show running-config
Step 6
copy running-config startup-config
To remove this device as a candidate RP, use the no ip pim rp-candidate interface-id global
configuration command.
This example shows how to configure the switch to advertise itself as a candidate RP to the BSR in its
PIM domain. Standard access list number 4 specifies the group prefix associated with the RP that has
the address identified by a port. That RP is responsible for the groups with the prefix 239.
Switch(config)# ip pim rp-candidate gigabitethernet0/2 group-list 4
Switch(config)# access-list 4 permit 239.0.0.0 0.255.255.255
Using Auto-RP and a BSR
If there are only Cisco devices in you network (no routers from other vendors), there is no need to
configure a BSR. Configure Auto-RP in a network that is running both PIMv1 and PIMv2.
If you have non-Cisco PIMv2 routers that need to interoperate with Cisco PIMv1 routers and multilayer
switches, both Auto-RP and a BSR are required. We recommend that a Cisco PIMv2 router or multilayer
switch be both the Auto-RP mapping agent and the BSR.
OL-23400-01
Purpose
Enter global configuration mode.
Configure your switch to be a candidate RP.
For interface-id, specify the interface whose associated IP address
•
is advertised as a candidate RP address. Valid interfaces include
physical ports, port channels, and VLANs.
•
(Optional) For group-list access-list-number, enter an IP standard
access list number from 1 to 99. If no group-list is specified, the
switch is a candidate RP for all groups.
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.
For source, enter the number of the network or host from which the
•
packet is being sent.
(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.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Cisco ME 3800X and 3600X Switch Software Configuration Guide
Configuring IP Multicast Routing
33-31
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