MPLS Fundamentals

Controlling the Advertisement of Labels via LDP

LDP lets you control the advertisement of labels. You can configure LDP to advertise or not to advertise certain labels to certain LDP peers. You can then use the locally assigned labels that are advertised to the LDP peers as outgoing label on those LSRs. The syntax for this command is as follows:

mpls ldp advertise-labels [vrf vpn-name] [interface interface |
 for prefix-access-list [to peer-access-list]]

The prefix-access-list is a standard numbered access list (1–99) or named access list that lets you specify which prefixes should have a label advertised. The peer-access-list is a standard numbered access list (1–99) or named access list that lets you specify which LDP peers should receive ...