4000 Router Series IP Multicast Command Reference

priority priority: Specifies a priority for the C-RP, in the range of 0 to 255. The default setting is 192. A

larger value represents a lower priority.

Usage guidelines

The IP address of a C-RP must be the IP address of a local PIM enabled interface on the C-RP. Otherwise,

the configuration does not take effect.

In an ACL, the source field specifies the multicast group range to which the C-RP is designated, and the

other fields are ignored. If the specified addresses are not multicast addresses, the ACL is not valid.

To use a C-RP for multiple multicast group ranges, specify them by multiple permit statements in an ACL

and reference the ACL in the group-policy keyword.

If you execute this command using the same C-RP IP address multiple times, the most recent configuration

takes effect.

Examples

# On the public network, configure the interface with the IP address of 1.1.1.1 as the C-RP for multicast

group ranges 225.1.0.0/16 and 226.2.0.0/16, and set its priority to 10.

<Sysname> system-view

[Sysname] acl number 2000

[Sysname-acl-basic-2000] rule permit source 225.1.0.0 0.0.255.255

[Sysname-acl-basic-2000] rule permit source 226.2.0.0 0.0.255.255

[Sysname-acl-basic-2000] quit

[Sysname] pim

[Sysname-pim] c-rp 1.1.1.1 group-policy 2000 priority 10

crp-policy (PIM view)

Use crp-policy to configure the legal C-RP address range and the multicast group range to which the C-RP

is designated.

Use undo crp-policy to remove the configuration.

Syntax

crp-policy acl-number

undo crp-policy

Default

No restrictions are defined for the legal C-RP address range and the multicast group range, and all

received C-RP messages are regarded legal.

Views

PIM view

Predefined user roles

network-admin

Parameters

acl-number: Specifies an IPv4 advanced ACL by its number in the range of 3000 to 3999.

Usage guidelines

This command guards against C-RP spoofing.