The MPLS-OPS Archive

Cell Relay Retreat>MPLS-OPS Archive>month:2001-Nov> msg00138



[Date Prev][Date Next][Thread Prev][Thread Next]  
  [Date Index][Thread Index][Author Index][Subject Index]

Re: IP to FEC mapping in MPLS

  • From: Thomas Nadeau <tnadeau@cisco.com>
  • Date: Mon, 26 Nov 2001 11:35:38 -0500
  • Cc: mpls <mpls-ops@mplsrc.com>
  • Resent-Date: Mon, 26 Nov 2001 14:29:42 -0500
  • To: kino_skin@yahoo.com
  • X-Sender: tnadeau@bucket.cisco.com

At 10:00 PM 11/26/2001 +0530, kino wrote:
11/26/01 7:53:40 PM, Thomas Nadeau <tnadeau@cisco.com> wrote:

>
>       >>3) what is the mapping between FEC and LSPs. can one FEC have more
>       than
>       >>one LSP associated with it.
>
>       FTN is the mapping between FEC and LSPs and one FEC can
>       have more than one LSP associated with it.
>
>
>           This can also be a FEC->TE tunnel head. This
>   relationship is still possible even if there is no signaled LSP
>   for the tunnel.
>
>           --Tom
>

I have a doubt, it maybe a simple one..
If the Tunnel has no signalled LSP associated with it,
then how would it come into existence.
Is it created without the use of labels ?
Is it created using static routing ?

        It is configured.  TE tunnel heads are generally
not created automatically; they are created statically
via a provisioning tool or by the operator directly. The
FEC-to-tunnel mapping is also sometimes static, but can
be automatically assigned by the IGP.

        --Tom





------------------------------------------------------------------------
Mathematics is the supreme nostalgia of our time.