originating-rp

Function

The originating-rp command configures an RP to replace the source RP address in the SA message with an IP address of a specified interface when the RP constructs an SA message. This interface is also called a logical RP.

The undo originating-rp command restores the default configuration.

By default, the source RP address in an SA message is the address of the RP that actually sends the SA message.

Format

originating-rp interface-type interface-number

undo originating-rp

Parameters

Parameter	Description	Value
interface-type interface-number	Specifies the type and number of the interface that functions as a logical RP.	-

Views

MSDP view of the public network instance or MSDP view of the VPN instance

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

You must run this command when configuring anycast RP in a PIM-SM domain.

An MSDP peer performs the RPF check on a received SA message and then discards the message if the addresses of the local RP and the remote RP are the same. In anycast RP, however, you need to configure RPs on two or more devices in a PIM-SM domain, assign the same IP address to these RPs, and set up MSDP peer relationships between these devices. You must configure an address that is different from the actual RP address for the logical RP so that the SA message can pass the RPF check.

Prerequisites

MSDP has been enabled using the msdp command.

Precautions

The interface functioning as a logical RP cannot be an actual RP interface. Commonly, the interfaces setting up an MSDP peer relationship can be specified as logical RP addresses.

Example

# Configure VLANIF100 as the logical RP for the SA message.

<HUAWEI> system-view
[HUAWEI] multicast routing-enable
[HUAWEI] msdp
[HUAWEI-msdp] originating-rp vlanif 100