Segment Routing Fast Reroute – Traffic Engineering with Segment Routing uses LFA mechanism to provide 50 msec fast reroute capability. Current Segment Routing implementation for the OSPF uses regular LFA (Loop Free Alternate) for fast reroute in Cisco devices.
MPLS VPN and Segment Routing. Many people have been asking what are the differences between MPLS VPN and Segment Routing.
What does PE-CE mean in the context of MPLS ? What is CE , P and PE device in MPLS and MPLS VPN ? These are foundational terms and definition in MPLS.