mpls ldp discovery targeted-hello accept


Am confused about something regarding above command,  why do we need to enable this command when the LDP adjacency happens on a TE tunnel ,  but not when we do  targetted ldp for  L2 VPNs ?




  • Hi,

    This excerpt was saved in my notes:

    As you may be aware that TE tunnel is uni-directional. When LDP is configured over an TE tunnel, an tLDP needs to be established between the tunnel head end and the tunnel tail end. If there is no tunnel in the opposite direction, the tail end has no idea it has to run an tLDP session. By configuring this we intruct the tail end accept the message and kick start the session.

  • Thanks a lot mkhan,  that clears it up.

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