The MPLS-OPS Archive

[Puddinhead Wilson <puddinghead_wilson007@yahoo.co.uk>]

I would appreciate if someone could help me understand
this:

4.3.5. Loops

 While the EXPLICIT_ROUTE object is of finite length,
the existence of loose nodes implies that it is
possible to construct forwarding loops
   during transients in the underlying routing
protocol.  This can be
   detected by the originator of the explicit route
through the use of
   another opaque route object called the RECORD_ROUTE
object.  The
   RECORD_ROUTE object is used to collect detailed
path information and
   is useful for loop detection and for diagnostics.


#1. Does this not assume every intermediate node in
the LSP that has been setup a unique identifier?
#2. If such a scenraio does occur, ie. an LSP is
indeed setup where there is a loop, and there are no
constraints specified, is it safe to assume that there
is a loop in the original topology itself?


 --- Sunil Menon K <k_sunilmenon@rediffmail.com>
wrote: >   
> HI Sundeep,
> 
> An good starting point would be some wonderful Cisco
> presentations on Traffic Engineering by the MPLS
> Gurus ,Robert Razakus and Eric Osborne.
> 
> Thanks,
> Sunil
> 
> On Thu, 20 May 2004 Sundeep Singh wrote :
> >Hi,
> >I fail to understand the format of the "Path
> message" as specified in RFC
> >3209. what does the different types of brackets
> signify?
> >And say i wish to reserve 10kbps of bandwidth for a
> particular FEC, how is
> >this conveyed using a Path message?
> >Also is there some good reference other than the
> RFC, where i can look for
> >a better understanding of RSVP-TE.
> >
> >Thanks,
> >Sundeep.
> >--
> >
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