MPLS TE Components in One Slide
Link state IGP advertises “unreserved capacity” and administrative attributes per link
Constraints (required bandwidth and policy) are specified for a TE “tunnel”
Constraint based routing – to route a tunnel, prune the unsuitable links from the topology and pick shortest path on the remaining topology
i.e. links that violate a constraint
Use RSVP to route the trunk and do admission control
MPLS LSPs used for forwarding