Subject: [CCAMP] Comment on draft-ietf-ccamp-general-constraint-encode-08: priority

From: "Giovanni Martinelli (giomarti)" <[email-masked]>
Date: Mon, 30 Jul 2012 22:34:37 +0000

Dear authors / ccamp,

here a few comments related to the priority field added to draft-ietf-ccamp-general-constraint-encode:

A couple of editorial comments
1)  "wavelenght priority" appears in a draft that claim to be general. In fact is available in "Available Labels Sub-TLV" and "Shared Backup Labels Sub-TLV". So is a wavelength or label-like priority?
2)  why an 8 bits (bit field) instead of the classic 3 bits (integer [0 .. 7]?

Then few other comments
3)  How the priority is used versus the A flag . Draft text report
"  
   A (Availability bit) = 1 or 0 indicates that the labels listed in
   the following label set field are available or not available,
   respectively, for use at a given priority level as indicated by the
   Priority Flags.

"
So does it means that there could be different "available labels sub-TLVs" advertised? 

4) Still unclear to me how this priority is different from the one reported in http://tools.ietf.org/html/draft-kattan-wson-property-01 and eventually if this "priority" could fit the LSP priority already available (as one of the comment we received at that time)

Cheers
G