pim bsr-boundary

Function

The pim bsr-boundary command configures a bootstrap router (BSR) boundary on an interface.

The undo pim bsr-boundary command restores the default configuration.

By default, no BSR boundary is configured on an interface.

Format

pim bsr-boundary

pim bsr-boundary incoming

undo pim bsr-boundary

Parameters

Parameter	Description	Value
incoming	Applies a BSR boundary only to incoming traffic.If this parameter is specified, an interface can send BSR messages but cannot receive BSR messages.	-

Parameter

Description

Value

incoming

Applies a BSR boundary only to incoming traffic.If this parameter is specified, an interface can send BSR messages but cannot receive BSR messages.

Views

100ge sub-interface view, 100GE interface view, 10GE sub-interface view, 10GE interface view, 200GE sub-interface view, 25GE sub-interface view, 25GE interface view, 400GE sub-interface view, 400GE interface view, 40GE sub-interface view, 40GE interface view, 50GE sub-interface view, 50GE interface view, Eth-Trunk sub-interface view, Eth-Trunk interface view, FlexE interface view, GE optical interface view, GE sub-interface view, GE interface view, GE electrical interface view, Global VE sub-interface view, Loopback interface view, MTI interface view, Mtunnel view, PW-VE sub-interface view, Tunnel interface view, VBDIF interface view, VE sub-interface view, VLANIF interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
pim	write

Usage Guidelines

Usage Scenario

A BSR is responsible for collecting rendezvous point (RP)-set information on a PIM-SM network, encapsulating the RP-set information in a bootstrap message, and advertising the message to every PIM neighbor.

Before configuring PIM-SM inter-domain multicast, run the pim bsr-boundary command to configure BSR boundaries on interfaces of edge routers to divide PIM-SM domains.Configuring BSR boundaries for a PIM-SM network and the Internet also helps isolate the PIM-SM network from the Internet.

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

If an interface is disabled from sending and receiving BSR messages through the BSR boundary configuration, BSR messages cannot pass the BSR boundary but other multicast packets can pass the BSR boundary. BSR boundaries divide a large-scale PIM-SM network into several PIM-SM domains and each BSR serves only the local PIM-SM domain and routers in another PIM-SM domain cannot participate in packet forwarding in the local domain.

Follow-up Procedure

Configure a BSR RP for each PIM-SM domain.

Establish a Multicast Source Discovery Protocol (MSDP) peer relationship between RPs in each two PIM-SM domains and configure PIM-SM inter-domain multicast.

Precautions

If two PIM-SM domains are in different autonomous systems (ASs), you also need to configure BSR boundaries on edge routers.

Common tunnel interfaces do not support this command. Only the GRE Tunnel interface supports this command.

Example

# Configure a boundary domain on a GRE tunnel interface.

<HUAWEI> system-view
[~HUAWEI] multicast routing-enable
[*HUAWEI] interface tunnel 5
[*HUAWEI-Tunnel5] tunnel-protocol gre
[*HUAWEI-Tunnel5] pim bsr-boundary

# Configure a BSR boundary on GE 0/1/0.

<HUAWEI> system-view
[~HUAWEI] multicast routing-enable
[*HUAWEI] interface GigabitEthernet 0/1/0
[*HUAWEI-GigabitEthernet0/1/0] pim bsr-boundary