Configuring Implicit Null Label - Alcatel-Lucent 7950 SR User Configuration Manual

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Label Distribution Protocol

Configuring Implicit Null Label

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.

t null option for all LDP FECs for which this node is the egress LER using the following

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.

7950 SR OS MPLS Configuration Guide

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