MSDP supports the Message-digest algorithm 5 (MD5) or Key-Chain authentication to enhance the security and reliability in MSDP message forwarding. The application scenario of the MD5/Key-Chain authentication is the same as that of basic MSDP applications.
Currently, MSDP supports two authentication modes: MD5 and Key-Chain. The two modes are mutually exclusive, and MSDP peers need to adopt the same authentication mode.
Key-Chain provides the encryption and authentication functions for all applications, supports multiple encryption algorithms, and supports dynamically updating of the key value of the encryption algorithm. For details about Key-Chain, refer to relevant feature description.