The MPLS WG Archive

[Kireeti Kompella <kireeti@juniper.net>]

> In this draft 2.4.2 Link TLV has sub-TLV 8 - Unreserved bandwidth (32 
> octets).
> 
> 2.5.8 says Each value will be less than or equal to the maximum reservable 
> bandwidth.  It specifies not yet reserved BW at each of the eight priority 
> levels.
> 
> Does this mean each 4 octets (32/8 = 4) will represent unreserved bandwith 
> for a priority?
> What does it represent?  2^4 = 16 values, but how do you use it?

   The Unreserved Bandwidth sub-TLV specifies the amount of bandwidth
   not yet reserved at each of the eight priority levels, in IEEE
   floating point format.  Each value will be less than or equal to the
   maximum reservable bandwidth.  The units are bytes per second.

An octet is *8* bits.  4 octets is 32 bits.

> Does anyone know?

Excellent question.

Kireeti.