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Hello,
I have a couple of doubts regarding the control channel
seperation in GMPLS CR-LDP (draft-ietf-mpls-generalized-cr-ldp-05.txt). For
simplicity let me consider a scenario of setting up a uni-directional path
between two nodes having seperate data channel and control channel and neither
link bundling nor unnumbered links is being considered.
1) What is the significance of IPv4 next hop address in
the Interface ID TLV? Is this the next hop address for a Forwarding Equivalence
Class(FEC) F1?
2) What does the Logical Interface ID in the Interface ID
TLV specify? Is this the interface ID of the control channel at the downstream
LSR? If yes how does the upstream node know about it in prior?
3) How does the upstream LSR knows about the data channel
id at the downstream node, since the draft mentions data channels are
specified from the view point of the sender of the Mapping message i.e.
downstream node.
Thanks in advance for your reply.
Regards
Vinay
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