Re: Clarification on contents of Label Set object

["Adrian Farrel" <adrian@olddog.co.uk>]

Re-send after smtp failure here in Vienna.
----- Original Message ----- 
From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "Ashok Narayanan" <ashokn@cisco.com>;
<ccamp@ops.ietf.org>
Cc: "Ashok Narayanan" <ashokn@cisco.com>; "Jim
Gibson" <gibson@cisco.com>; <rtrowel@cisco.com>;
<tappan@cisco.com>
Sent: Monday, July 14, 2003 12:52 PM
Subject: Re: Clarification on contents of Label
Set object


> Your interpretation of 3471 is correct (IMNSHO).
> Your extrapolation to Acceptable Label Set is
> consistent with 3471 and with implementations in
> the field.
> Adrian
> ----- Original Message ----- 
> From: "Ashok Narayanan" <ashokn@cisco.com>
> To: <ccamp@ops.ietf.org>
> Cc: "Ashok Narayanan" <ashokn@cisco.com>; "Jim
> Gibson" <gibson@cisco.com>; <rtrowel@cisco.com>;
> <tappan@cisco.com>
> Sent: Tuesday, July 08, 2003 1:21 AM
> Subject: Clarification on contents of Label Set
> object
>
>
> >
> > Folks,
> >
> > We are seeking clarification with regards to
the
> label values to be
> > included in a Label-Set object and
> Accetable-Label-Set object.
> >
> > In general, it is possible for a data-link
using
> LSC or FSC switching
> > to have different label values on either side
of
> the link.  The two
> > sides must agree on which side does the
mapping:
> the object sender or
> > the object receiver.
> >
> > For the case of sending
> Label-Set/Acceptable-Label-Set, rfc3473 does
> > not state explicitly whether the labels in the
> object should be from
> > the the point of view of the object sender or
> object receiver of the
> > object.
> >
> > Our conclusion based on RFC3471, Section
3.2.1.1
> is that the labels
> > always reflect the object sender's point of
view
> and are mapped by the
> > object receiver.  For instance, in the case
that
> an upstream node is
> > including a Label-Set in a Path message, the
> labels included should be
> > from the space of labels used by the upstream
> node, and the downstream
> > node translate them before selecting one.
> Correspondingly, when a
> > PathError message carries an
> Acceptable-Label-Set, the receiver of the
> > PathError message (the upstream node) would
> first translate the
> > elements before selecting one.
> >
> > Are there any alternate views?
> >
> > Thanks
> > -Ashok
> >
> > --- Asok the
> Intern ----------------------------------------
> > Ashok Narayanan
> > IOS Network Protocols, Cisco Systems
> > 1414 Mass Ave, Boxborough MA 01719
> > Ph: 978-936-1608.  Fax: 978-936-2218 (Attn:
> Ashok Narayanan)
> >
> >
> >
>