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Cell Relay Retreat>MPLS WG Archive>month:2002-Oct> msg00158



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Decreasing TE-LSP bandwidth, "interoperability issue"

  • From: Jean Philippe Vasseur <jvasseur@cisco.com>
  • Date: Wed, 30 Oct 2002 21:06:34 -0400
  • Cc: mpls@UU.NET, najam.ahmad@wcom.com, juzer.kopti@wcom.com, plahiri@UU.NET, blaine.christian@wcom.com

Hi Amir,

You're correct, there is an ambiguity in the RFCs that we need to address. 
This can clearly cause some interoperability issues. The simplest and more 
logical approach here is to proceed the same way whether the bandwidth is 
being increased or decreased, just increment the LSP-ID.

Any other vendor opinion ?

Thanks.

JP.

At 14:25 30/10/2002 -0500, Amir Birjandi wrote:

>Hi,
>
>There are straight guide lines for increasing TE-LSP bandwidth in rfc-3209,
>however there are ambiguities in rfc3209 and rfc2205 for decreasing the
>TE-LSP bandwidth.
>
>It seems vendors can follow the spc if they change the LSP-ID or not change
>the LSP-ID, after the LSP bandwidth has been decreased.
>
>This ambiguity may causes some intereoperabilty issues.
>
>Perhaps verdors or authors "3209 or 2205 "should address this issue so
>every one comply to the same standard.
>
>Thanks
>
>A.