Hi Julien,

I agree. A New flag on the object header (WA Object, I assume that is what you 
are pointing to) where we have a flag to indicate if this is fixed (WSON) or 
flexi-grid is reasonable instead of creating a new object for a new Spectrum 
Assignment Object.

TLVs require a bit different encoding due to the nature of additional 
parameters for flexi-grid. So strict re-use of WSON TLV may not be sufficient 
for some cases in flexi-grid. 

Best regards,
Young

-----Original Message-----
From: Julien Meuric [mailto:[email protected]] 
Sent: Thursday, July 20, 2017 10:28 AM
To: [email protected]; [email protected]
Subject: My Comment on draft-lee-pce-flexible-grid

Hi,

The discussion during the meeting suggests that I need to clarify my comment 
about draft-lee-pce-flexible-grid.

This I-D is very similar to draft-ietf-pce-wson-rwa-ext, which addresses the 
exact same problem over a slightly different WDM label space (running a 
side-by-side diff between them appears to be very practical).
This new I-D requests the creation of one object and 3 TLVs, which are 
identical to the ones created in the WSON.
As a result, I believe the latter should be reused as a starting popint.
Covering the flexi-grid case may just need to allocate new flag in the object 
header to identify the WDM type we're dealing with, and document the 
flexi-grid-specific assumptions (if any).

Thanks,

Julien

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