R3303-HP HSR6800 Routers MPLS Command Reference

Related commands

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

advertise-label

Use advertise-label to configure a label advertisement policy.

Use undo advertise-label to restore the default.

Syntax

advertise-label ip-prefix ip-prefix-name [ peer peer-ip-prefix-name ]

undo advertise-label ip-prefix ip-prefix-name

Default

An LSR does not filter label bindings to be advertised.

Views

MPLS LDP view, MPLS LDP VPN instance view

Default command level

2: System level

Parameters

ip-prefix ip-prefix-name: Specifies an IP prefix list to be used for filtering the label bindings to be

advertised. The ip-prefix-name argument is the name of the IP prefix list, a string of 1 to 19 characters.

peer peer-ip-prefix-name: Specifies a list of LDP peers. The peer-ip-prefix-name argument is the IP prefix

list name, a string of 1 to 19 characters. If you do not specify the LDP peer list, the label advertisement

policy is for all LDP peers.

Usage guidelines

When advertising label bindings to peers, an LSR follows these rules:

• If the IP prefix of a label binding to be advertised fails the IP prefix checking, the LSR does not

advertise the label binding to any peer.

• If the IP prefix of a label binding to be advertised passes the IP prefix checking and the peer list is

not specified, the LSR will advertise the label binding to all peers.

• If the IP prefix of a label binding to be advertised passes the IP prefix checking and a peer list is

specified, the LSR will advertise the label binding to the peers that pass the peer list checking.

• If the IP prefix of a label binding to be advertised passes the checking of more than one IP prefix lists

(which are specified by executing the advertise-label command for multiple times), the LSR will

advertise the label binding based on the configuration by the first advertise-label command.

Examples

# Configure label advertisement control policies so that the device:

• Advertises label bindings for FEC 10.1.1.0/24 to the LDP peer with the LSR ID 3.3.3.9

• Advertises label bindings for FEC 10.2.1.0/24 to the LDP peer with the LSR ID 4.4.4.9.

• Does not advertise label bindings of other subnets to any peers.

<Sysname> system-view

[Sysname] ip ip-prefix prefix-to-C permit 10.1.1.0 24

[Sysname] ip ip-prefix prefix-to-D permit 10.2.1.0 24