mpls ldp local-lsr-id (Interface view)

Function

The mpls ldp local-lsr-id command configures the primary IP address of a specified interface as a local LSR ID of the existing LDP session.

The undo mpls ldp local-lsr-id command restores the default primary IP address.

By default, the current LDP session uses the LSR ID of an LDP instance as a local LSR ID.

Format

mpls ldp local-lsr-id { interface-type interface-number | interface-name }

mpls ldp local-lsr-id interface

undo mpls ldp local-lsr-id

Parameters

Parameter	Description	Value
interface-type interface-number	Configures the primary IP address of a specified interface as an LSR ID.	-
interface-name	Specifies the interface name.	-
interface	Indicates the primary IP address of the current interface as an LSR ID.	-

Parameter

Description

Value

interface-type interface-number

Configures the primary IP address of a specified interface as an LSR ID.

interface-name

Specifies the interface name.

interface

Indicates the primary IP address of the current interface as an LSR ID.

Views

100GE interface view, 10GE interface view, 25GE interface view, 400GE interface view, 40GE interface view, 50GE interface view, Eth-Trunk interface view, FlexE interface view, GE optical interface view, GE electrical interface view, GMPLS-UNI interface view, VLANIF interface view, XGE interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mpls-ldp	write

Usage Guidelines

Usage Scenario

LDP sessions that establish LDP LSPs to transmit VPN services share the LSR ID of an LDP instance. Sharing the LSR ID may cause the LDP LSPs to fail to isolate different VPN services. To address this problem, run the mpls ldp local-lsr-id command to specify an LSR ID for each LDP session.

NOTE:

If multiple links directly connect an LSR pair, the LSR ID configured on the interface of each link must be the same. Otherwise, the LDP session uses the LSR ID of the link that finds the adjacency first while other links with different LSR IDs cannot be bound to the LDP session. LDP LSP fails to be established on these links.
If both the local and remote LDP sessions are to be established between an LSR pair, LSR IDs configured for the two sessions must be the same. Otherwise, only the LDP session that finds the adjacency first can be established.
There must be a primary IP address on the specified interface. Otherwise, LDP will use 0.0.0.0 as Local LSR ID.

Prerequisites

MPLS LDP has been enabled using the mpls ldp command in the interface view before the mpls ldp local-lsr-id command is run in the same interface view.

Configuration Impact

Running this command in an interface view resets LDP adjacencies of corresponding links.

Precautions

If the mpls ldp local-lsr-id command is run more than once, the last configuration overrides the previous one.

Example

# Use the primary IP address of the current interface as a local LSR ID of a local LDP session.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] quit
[*HUAWEI] mpls ldp
[*HUAWEI-mpls-ldp] quit
[*HUAWEI] interface GigabitEthernet 0/1/0
[*HUAWEI-GigabitEthernet0/1/0] mpls
[*HUAWEI-GigabitEthernet0/1/0] mpls ldp
[*HUAWEI-GigabitEthernet0/1/0] mpls ldp local-lsr-id interface