Hi All,
I have a questions on sending the PCUpdate message to delegate an LSP from
PCE to PCC. Can somebody please help me here to understand the PCUpdate message
For delegating an LSP back to PCC.
Re-delegation section talks about empty message but the PCUpdate request
message definition
Says that all LSP parameters muse be sent.
1) PCE requires to send an EMPTY LSP Update message to delegate an LSP
back to PCC.
What is an acceptable empty LSP message?
Please refer to section 5.5.5 of draft "PCEP extensions for stateful PCE" for
procedure of returning
Delegation
2) Section 6.2 of draft "PCEP extensions for stateful PCE" defines the
PCUpd message.
- Three mandatory objects must be included in each PCUpd message. The
error codes
Are defined to notify the sender if any of the mandatory objects
missing in the PCUpdate
Message.
- Also, The draft says (copied text from section 6.2)
-
"An LSP Update Request MUST contain all LSP parameters that a PCE wishes to
be set for the LSP. A PCC MAY set missing parameters from locally
configured defaults. If the LSP specified in the Update Request is
already up, it will be re-signaled.
A clear definition of NULL message would help us here.
-thanks in advance
-ramana
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