Re: Label Set Object

["Diego Caviglia" <Diego.Caviglia@marconi.com>]

Anca,
                comment in line.


Regards, Diego.






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Diego Caviglia
Optical Network - ASON strategy
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Anca Zamfir <ancaz@cisco.com>@ops.ietf.org on 09/05/2002 22.44.28

Sent by:  owner-ccamp@ops.ietf.org


To:   "Adrian Farrel" <afarrel@movaz.com>
cc:   "John Drake" <jdrake@calient.net>, "Zafar Ali" <zali@cisco.com>,
      "'Juneja, Manoj'" <m_juneja@trillium.com>, "Vinay Vernekar"
      <vinay.vernekar@wipro.com>, "Manoj Agiwal" <ManojA@netbrahma.com>,
      "'Ccamp \(E-mail\)" <ccamp@ops.ietf.org>, <skatukam@cisco.com>,
      "mpls@UU. NET \(E-mail\)" <mpls@UU.NET>

Subject:  Re: Label Set Object


[CUT]

>Could we say that bidirectional uses Upstream Label only, and
unidirectional
>uses Label Set only?
>Yes.

This is probably true for SONET LSPs. For other types this restriction may
be undesirable.

[dc] I'd like to add a comment on the use of Label Set and Upstream Label
in case of bidirectional SDH circuit.
In bidirectional SDH LSP, both the Upstream and the Downstream label must
be the same.
Therefore request message must contain an Upstream Label (with say value A)
and a Label Set with the single value A to express the specific SDH
restriction.


[CUT]