originating-rp

Function

The originating-rp command specifies an interface whose address is used to replace the actual source RP address in a source active (SA) message. Such an interface is called a logical RP.

The undo originating-rp command restores the default configuration.

By default, an SA message carries the actual source RP address.

Format

originating-rp { interface-type interface-number | interface-name }

undo originating-rp

Parameters

Parameter	Description	Value
interface-type	Specifies the type of an interface.	-
interface-number	Specifies the number of an interface.	-

Parameter

Description

Value

interface-type

Specifies the type of an interface.

interface-number

Specifies the number of an interface.

Views

VPN instance MSDP view, MSDP view of a public network instance

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
msdp	write

Usage Guidelines

Usage Scenario

To implement Anycast-RP in a PIM-SM domain, you must run the originating-rp command. This is because when a Multicast Source Discovery Protocol (MSDP) peer performs the reverse path forwarding (RPF) check on a received SA message, it discards the message if the RP address in the SA message is the same as the local RP address. To prevent this problem, you need to specify a logical RP address for SA messages on each Router where Anycast-RP is to be deployed.

Prerequisites

The multicast routing function has been enabled using the multicast routing-enable command in the public network instance view or VPN instance view.

Configuration Impact

The interface functioning as a logical RP cannot be an actual RP interface. Generally, specify interfaces that set up MSDP peer relationships as logical RPs.

Precautions

The interface functioning as a logical RP cannot be an actual RP interface. Generally, specify interfaces that set up MSDP peer relationships as logical RPs.

Example

# In the public network instance, specify GE 0/1/0 as the logical RP for SA messages.

<HUAWEI> system-view
[~HUAWEI] multicast routing-enable
[*HUAWEI] msdp
[*HUAWEI-msdp] originating-rp GigabitEthernet 0/1/0