Configuring LDP message authentication
Configuration of an authentication key on a per LDP session basis is supported to protect against spoofed TCP segments in a connection stream.
vyatta@R1# set protocols mpls-ldp neighbors neighbor <ip address> md5-password <text>
The following example shows how to configure an LDP message authentication key named early for the neighbor at IP address 10.10.10.3.
vyatta@R1# set protocols mpls-ldp neighbors neighbor 10.10.10.3 md5-password early