2. Segment Routing MPLS (SR-MPLS)
2.1 Overview
Segment Routing MPLS (SR-MPLS) is an evolution of MPLS :
SR-MPLS does not change the MPLS architecture [ RFC 3031 ] ;
SR-MPLS does not change the MPLS switching plan and therefore does not require any hardware changes;
SR-MPLS requires an upgrade of the MPLS control plane, and therefore a software upgrade of the routers.
SR-MPLS is based on two principles:
1) MPLS labels are no longer advertised in an MPLS-specific signalling protocol but are advertised in the internal link-state routing protocol, such as IS-IS [
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Segment Routing MPLS (SR-MPLS)
Segment Routing IPv6 (SRv6)
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