Configuring A Static Rendezvous Point Address; Configuring The Designated Router Priority; Filtering Pim Register Messages - Cisco PIX 500 Series Configuration Manual

Chapter 11 Configuring Multicast Routing

Configuring a Static Rendezvous Point Address

All routers within a common PIM sparse mode or bidir domain require knowledge of the PIM RP
address. The address is statically configured using the pim rp-address command.
The security appliance does not support Auto-RP or PIM BSR; you must use the pim rp-address
Note
command to specify the RP address.
You can configure the security appliance to serve as RP to more than one group. The group range
specified in the access list determines the PIM RP group mapping. If an access list is not specified, then
the RP for the group is applied to the entire multicast group range (224.0.0.0/4).
To configure the address of the PIM PR, enter the following command:
hostname(config)# pim rp-address ip_address [ acl ] [bidir]
The ip_address argument is the unicast IP address of the router to be a PIM RP. The acl argument is the
name or number of a standard access list that defines which multicast groups the RP should be used with.
Do not use a host ACL with this command. Excluding the bidir keyword causes the groups to operate
in PIM sparse mode.
The security appliance always advertises the bidir capability in the PIM hello messages regardless of the
Note
actual bidir configuration.

Configuring the Designated Router Priority

The DR is responsible for sending PIM register, join, and prune messaged to the RP. When there is more
than one multicast router on a network segment, there is an election process to select the DR based on
DR priority. If multiple devices have the same DR priority, then the device with the highest IP address
becomes the DR.
By default, the security appliance has a DR priority of 1. You can change this value by entering the
following command:
hostname(config-if)# pim dr-priority num
The num argument can be any number from 1 to 4294967294.

Filtering PIM Register Messages

You can configure the security appliance to filter PIM register messages. To filter PIM register messages,
enter the following command:
hostname(config)# pim accept-register {list acl | route-map map-name }
OL-12172-03
Cisco Security Appliance Command Line Configuration Guide
Configuring PIM Features
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