4. Applications

Segment Routing makes it possible to route a packet along a particular path, without creating states in the transit network, or requiring signaling. This opens up new applications in networks that previously used IP or MPLS/LDP. For networks that used MPLS/RSVP-TE, the majority of applications were already possible, but Segment Routing brings a number of changes.

This section explores three families of applications:

• improved network response in the event of an outage;

• better adaptation of traffic routing in the network ("TE" traffic engineering);

• better network operation.