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Question about LMp.21 in RFC3036

  • From: "Zhun Jonathan Qiu" <zhunq@usa.net>
  • Date: Tue, 22 Jan 2002 20:25:22 -0800
  • Importance: Normal

Hi, there, I guess this may have been discussed before and if that's case please direct me
to the thread.

In RFC3036, A.1.2 (Receive Label Mapping), when we reach LMp.21, we should have failed the
check in LMp.18, i.e. LSR has NOT previously sent a label mapping for FEC to the peer. So
at this point "PrevAdvLabel" should be undefined. Then how can LMp.21 uses it as a
parameter to "Send_Message"?

Do we need to allocate a new label and advertise at this point?

I think I must be missing something obvious. Please help me out then. Thanks a lot!

Regards,
Jonathan Zhun Qiu