Protocol extensions for DS-TE
IGP extensions for DS-TE:
Advertise “unreserved TE bandwidth” (at each pre-emption level) for each Class-Type
Class-Type: a group of Diffserv classes sharing the same bandwidth constraint (e.g. AF1x and AF2x)
RSVP extensions for DS-TE:
Also signal the Class-Type
Perform Class-Type-aware admission control
Constraint-based routing for DS-TE:
Same algorithm but compute path over links with sufficient “unreserved bandwidth” for the relevant class-type