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LDP Specification - Appendix A.1.6 ( New FEC detection) & Appendix A.1.1 (Receive Label Request)

From: "Amarnath Honnavalli Anantharamaiah" <amarnath.honnavalli@wipro.com>
Date: Wed, 24 Jan 2001 18:07:13 +0530

[1]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FEC.4 Perform LSR Label Request procedure:

For Request Never

1. Goto FEC.6

For Request When Needed OR
For Request On Request

              1. Execute procedure
                 Prepare_Label_Request_Attributes
                 (Next Hop, FEC, InitAttributes, SAttributes);

              2. Execute procedure Send_Label_Request (Next
                 Hop, FEC, SAttributes).
                 Goto FEC.6.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
In case of the Label Request procedure, Why do we need to make a Request for RequestOnRequest.
For this procedure, we should request only when we have a request from upstream LSR.

Please clarify...

[2] Similarly in A.1.1 Receive Label Request... Why should we send Label Request for Request When Needed. This will be done already in FEC.4 above
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LRq.10 Perform LSR Label Request procedure:

For Request Never

1. Goto LRq.13.

For Request When Needed OR
For Request On Request

1. Execute procedure Prepare_Label_Request_Attributes
(Next Hop, FEC, RAttributes, SAttributes);

               2. Execute procedure Send_Label_Request (Next Hop, FEC,
                  SAttributes).
                  Goto LRq.13.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Thanks in Advance