4000 Router Series MPLS Command Reference

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

LDP can only use the routes permitted by the IP prefix list to generate LSPs.

Usage guidelines

The default LSP generation policy depends on the label distribution control mode.

• In Ordered mode, LDP can only use the Loopback interface address routes with a 32-bit mask and

the routes with a 32-bit mask that match the FECs of label mappings received from downstream LSRs

to generate LSPs.

• In Independent mode, LDP can use all routes with a 32-bit mask to generate LSPs.

After you configure an LSP generation policy, LDP uses all routes or the routes permitted by the IP prefix

list to generate LSPs, regardless of the label distribution control mode.

HP recommends using the default LSP generation policy.

Examples

# Configure an LSP generation policy to use only routes 10.10.1.0/24 and 10.20.1.0/24 to establish LSPs

for the public network.

<Sysname> system-view

[Sysname] ip prefix-list egress-fec-list index 1 permit 10.10.1.0 24

[Sysname] ip prefix-list egress-fec-list index 2 permit 10.20.1.0 24

[Sysname] mpls ldp

[Sysname-ldp] lsp-trigger prefix-list egress-fec-list

Related commands

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

lsr-id

Use lsr-id to configure an LDP LSR ID.

Use undo lsr-id to delete the configured LDP LSR ID.

Syntax

lsr-id lsr-id

undo lsr-id

Default

No LDP LSR ID is configured. LDP uses the MPLS LSR ID configured by the mpls lsr-id command for both

the public network and VPN instances.

Views

LDP view, LDP-VPN instance view

Predefined user roles

network-admin

Parameters

lsr-id: Specifies an LDP LSR ID, in dotted decimal notation.

Usage guidelines

If you configure an LDP LSR ID by using the lsr-id command in LDP view or LDP-VPN instance view, LDP

uses the LDP LSR ID. Otherwise, LDP uses the LSR-ID configured by the mpls lsr-id command.