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can egress know the ingress of a packet?

  • From: Eric Gray <EGray@zaffire.com>
  • Date: Tue, 30 May 2000 09:27:50 -0700
  • Cc: mpls@UU.NET

Tan Su Wei,

	It is possible to know the LSP traversed, only if
the LSP is "identified".  This is possible with either
CR-LDP (using LSP-ID) or RSVP-TE (using SESSION).

--
Eric Gray

> -----Original Message-----
> From: Tan Su Wei [mailto:swtan@mmu.edu.my]
> Sent: Monday, May 29, 2000 7:40 PM
> To: mpls@UU.NET
> Subject: can egress know the ingress of a packet?
> 
> 
> Dear all,
> 
>     I'd a doubt on :
>         In a mpls network domain, for a particular ingress-egress pair
> with multiple LSPs in between them, is it possible when a packet reach
> the engress node, the engress node will know the following:
>         i. ) the ingress node
>         ii.) the lsp it travel
> 
>         Thanks for any reply.
> 
> Regards
> Tan Su Wei
> 
> 
>