accept-label

Use accept-label to configure a label acceptance policy.

Use undo accept-label to delete a label acceptance policy.

Syntax

accept-label peer peer-lsr-id prefix-list prefix-list-name

undo accept-label peer peer-lsr-id

Default

No label acceptance policy is configured. LDP accepts all IPv4 FEC-label mappings from all peers.

Views

LDP view

LDP-VPN instance view

Predefined user roles

network-admin

Parameters

peer peer-lsr-id: Specifies an LDP peer by its LSR ID.

prefix-list prefix-list-name: Specifies an IPv4 prefix list by its name, a case-sensitive string of 1 to 63 characters.

Usage guidelines

This feature enables you to control the number of FEC-label mappings received from peers. LDP accepts only the FEC-label mappings whose IPv4 prefixes are permitted by the specified IPv4 prefix list from the specified peer.

To accept the previously denied label mappings from a peer, use the undo accept-label command or change the IPv4 prefix list for the peer. Then, execute the reset mpls ldp command to reset the LDP session to that peer to apply the new settings.

Using a label advertisement policy on an LSR or using a label acceptance policy on its upstream LSR can achieve the same purpose. As a best practice, use the label advertisement policy to reduce network load.

Examples

# Configure a label acceptance policy to accept only the FEC-label mappings containing IPv4 prefixes 10.1.1.0/24 and 10.2.1.0/24 from LDP peer 1.1.1.9.

<Sysname> system-view
[Sysname] ip prefix-list prefix-from-RTA index 1 permit 10.1.1.0 24
[Sysname] ip prefix-list prefix-from-RTA index 2 permit 10.2.1.0 24
[Sysname] mpls ldp
[Sysname-ldp] accept-label peer 1.1.1.9 prefix-list prefix-from-RTA

Related commands

display mpls ldp peer verbose

ip prefix-list (Layer 3—IP Routing Command Reference)