Segment Routing is the new generation source based routing and simplified version of MPLS. Instead of using label for each prefix, segment routing are identifying the segments. Below are few important points about segment routing.
Segment Routing – Important Points
1. Flexible and simple version of MPLS
2. Scalable
3. Source Choose the path- Source based routing
4. Every pacckets has a ordered list of segments
5. Network devices now will not calculate the path but will follow the instruction provided in the packet.
6. Doesn’t require LDP or RSVP
7. Relies on small extensions on IS-IS and OSPF
8. Can operate with IS-IS
9. Utilizes more effective use of bandwidth
10. Lower Latency
11. Each segment is identify by segment ID(32- bit) integer rather than using labels for each prefix.
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