Summary

This chapter explored the integration of SR-MPLS into an existing MPLS network already using LDP. It outlined the process of enabling SR-MPLS using IS-IS as the IGP routing protocol. Examining the IS-IS LSDB reveals how SR information propagates across the network, providing insight into the control plane of SR-MPLS.

The IS-IS registration with the LSD, allocation of the default SRGB labels and dynamic Adjacency-SID labels, and propagation of SR information in IS-IS through TLVs breaks down the process of generating and distributing labels, highlighting the differences in how SR-MPLS operates compared to traditional MPLS.

A key concept introduced was SIDs, which are essentially like labels used in SR-MPLS for routing. Other key concepts, such as global and local segments (SIDs), were explained, with practical configuration and verification steps provided.

One significant aspect covered was the coexistence of SR-MPLS and traditional MPLS within the same network. The...