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Basic LDP question...

  • From: "Sharma, Prashant" <prashant_sharma@trillium.com>
  • Date: Fri, 14 Jun 2002 12:29:14 -0700
  • Cc: "'eric.gray@sandburst.com'" <eric.gray@sandburst.com>

Hi All,

    I have one basic question in handling of label request message. LRq.2
states that "Is there next hop for FEC ?". My question is what should be the
LSR behavior when there is next hop for FEC (as per routing module) but
there is NO LDP session with the next hop node. 

   In such cases, should we consider ourself as EGRESS node and send Label
Mapping to upstream node (for both independent and ordered case)? Or we
should interpret this as a failure of LRq.2 and send Notification to the
upstream node (again for both independent and ordered case) ?

  Similarly, what should be LDP behavior when recognize new FEC procedure is
executed and there is NO LDP session with next hop node.
Should we consider ourself as EGRESS node (till the time session with next
hop is up)? Or we should consider ourself as "intermediate" node always, no
matter session with next hop is up or down?

  Thanks in advance.

Regards
Prashant.