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RSVP rro QUESTIONS, can anyone help me for this?

  • From: "Hong Liao" <hliao@telcordia.com>
  • Date: Fri, 26 Oct 2001 11:20:49 -0400
  • X-MIMETrack: Serialize by Router on notes640/Telcordia(Release 5.0.6a |January 17, 2001) at10/26/2001 11:20:51 AM

Hi,

I have questions for the RRO in the revpte draft.

On section 4.4 Record route object:
..................


[ If a path message contains multiple RROs, only the first RRO is
maningful.  Subsequent RROs should be ignored and should not be propagated.
Similary, if in a Resv MESSAGE MULIPLE RROs are encountered following a
FILTER_SPEC before another Filter is encountered, only the first RRO is
meaningful.  Subsequent RROs should be ignored and SHOULD NOT be
propagated.................]

(Path)  -                [SENDER_TSPEC], [first RRO], [second RRO]
(Resv) -                [FILTER_SPEC], [LABEL], [first RRO], [second RRO]

My question is :

So here the multiple RROs, the order should be as is: 1st RRO is 1st,
and 2nd RRO is 2nd,RRO as a whole.  or a LIFO stack is used, so the first
RROs of Multiple RROs would
be on the bottom, and when 2 RROs is received, the Second RRO should be
considered as the 'first one' and got forwarded.

As I observed, the one vendor will forward the second RRO if there are 2
RROs object existing in the path msg or resv msg.


Thanks a lot for your help.

Julia