RE: -proto-05: Final Format of "Bandwidth Constraints" sub-TLV

["Ash, Gerald R (Jerry), ALABS" <gash@att.com>]

Francois,

> It is clear you can set aside CT1 and CT2 without the bitmap by
> advertising dummy BC values. The argument for the bitmap was not that
> you cannot do this without it, the argument was that it lets you do it
> slightly more efficiently by avoiding increasing the IGP advertising
> with dummy values (optimizing IGP advertisement was an ongoing DS-TE
> objective).

I agree that avoiding unnecessary IGP advertisement when not all CTs/BCs are used is a strong point in favor of the bitmap.  IMO service providers will most often *not* use all 8 CTs, so the bitmap is beneficial in those instances.

Thanks,
Jerry