RE: Doubt about waveband Label

[Vishal Sharma <vishal@JasmineNetworks.com>]

Manoj,

Your point is well taken.

> -----Original Message-----
> From: manoj juneja [mailto:manojkumarjuneja@hotmail.com]
> Sent: Monday, March 19, 2001 10:54 AM
> To: ccamp@ops.ietf.org
> Subject: Doubt about waveband Label
> 
> 
> Hi All,
> 
>             In draft "draft-ietf-mpls-generalized-signalling-02.txt",
> it is mentioned that for waveband switching, the genralized label
> has the format (wavebandId - start label - end label).
> When the label request message is received on incoming interface,
> how to identify that the waveand label is requested ?
> Is it the LSP encoding type or some other parameter in label
> request message ? Please help.

As things stand, I cannot see any (obvious) way for an upstream
node to indicate to a downstream node that it requires a waveband
label. The LSP encoding type for the non SDH/SONET case only has 
a "lamda" encoding type, which is insufficient to distinguis between
whether a lambda label or a waveband label is desired. Although, one
might use the label set to restrict the choice of wavelengths to
the set desired in the waveband, there still does not appear to
be a way for the upstream node to tell the downstream node that 
it is a waveband for which a label is requested.

-Vishal