Relationship Between MPLS TE and QoS
MPLS TE designed to improve backbone efficiency independently of QoS:
MPLS TE compute routes for aggregates across all PHBs
MPLS TE performs admission control using “global” bandwidth pool
Unaware of bandwidth allocated to each queue
MPLS TE and MPLS Diffserv:
Can run simultaneously and independently
TE distributes aggregate load
Diffserv provides QoS differentiation
Are unaware of each other, i.e. no per-class admission control in TE)