Cleanup; Configuring Implicit Null Label; Global Ldp Filters - Alcatel-Lucent 7450 Manual

Ethernet service switch

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Cleanup

LDP closes all sockets, frees all memory, and shuts down all its tasks when it is deleted, so its

memory usage is 0 when it is not running.

The implicit null label option allows an egress LER to receive MPLS packets from the previous

hop without the outer LSP label. The user can configure to signal the implicit operation of the

previous hop is referred to as penultimate hop popping (PHP). This option is signaled by the

egress LER to the previous hop during the FEC signaling by the LDP control protocol.

Enable the use of the implicit null option, for all LDP FECs for which this node is the egress LER,

using the following command:

config>router>ldp>implicit-null-label

When the user changes the implicit null configuration option, LDP withdraws all the FECs and re-

advertises them using the new label value.

Both inbound and outbound LDP label binding filtering are supported.

7450 ESS MPLS Guide

Label Distribution Protocol