accept target-hello

Function

The accept target-hello command enables a local device to automatically establish a remote LDP session with a remote LDP peer after the local device receives a Targeted Hello message sent by the remote LDP peer.

The undo accept target-hello command disables a local device from automatically establishing a remote LDP session with a remote LDP peer after the local device receives a Targeted Hello message sent by the remote LDP peer.

By default, a local device is disabled from automatically establishing a remote LDP session with a remote LDP peer after the local device receives a Targeted Hello message sent by the remote LDP peer.

Format

accept target-hello peer-group ip-prefix ip-prefix-name

accept target-hello all

undo accept target-hello

Parameters

Parameter Description Value
all

Enables a local device to establish remote LDP sessions based on all received Targeted Hello messages.

-
peer-group

Specifies a peer group.

-
ip-prefix ip-prefix-name

Enables a local device to establish remote LDP sessions based on Targeted Hello messages sent by LDP peers that meet a specified IP prefix list. The ip-prefix-name value is set using the ip ip-prefix command.

The value is a string of 1 to 169 case-sensitive characters. It cannot contain spaces. The string can contain spaces if it is enclosed with double quotation marks (").

Views

MPLS-LDP view

Default Level

2: Configuration level

Task Name and Operations

Task Name Operations
mpls-ldp write

Usage Guidelines

Usage Scenario

By default, two ends must be configured to establish a remote LDP session. In some scenarios, a local device needs to automatically establish remote LDP sessions with its peers. For example, in a Remote LFA FRR scenario, after an ingress uses the Remote LFA algorithm to calculate a PQ node, the ingress needs to run LDP to automatically establish a remote LDP session with the destination IP address set to the PQ node's IP address. To enable a device to implement this function, run the accept target-hello command.

Prerequisites

If ip-prefix is to be used, an IP prefix list must have been created using the ip ip-prefix command.

Example

# Enable a local device to automatically establish a remote LDP session with a remote LDP peer after the local device receives a Targeted Hello message sent by the remote LDP peer.
<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] commit
[~HUAWEI-mpls] quit
[~HUAWEI] mpls ldp
[*HUAWEI-mpls-ldp] accept target-hello all
Parent Topic: MPLS LDP Configuration Commands
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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