Configuring ISIS SR Mapping Server with LDP
This chapter shows how to configure ISIS segment routing mapping server to work with LDP.
A segment routing mapping server allocates Segment Identifiers (SIDs) for prefixes and ranges of prefixes in an ISIS segment routing domain. LDP can advertise SIDs for destinations in the LDP part of the network that does not support segment routing. These segments are converted to MPLS labels and installed in the FTN/ILM and forwarding tables.
ISIS uses ISIS-TE TLVs to advertise any additional attributes associated with a prefix by adding new TLVs or sub-TLVs to the existing ISIS-TE TLVs.
Note: Configure an ISIS Level-1/Level-2 router as a mapping server, as it propagates both Level-1 and Level-2 LSPs.
Last modified date: 06/27/2023