RSVP-TE Authentication Static Key

RSVP MD5 authentication provides hop-by-hop security against message spoofing and replay attacks. If you configure authentication, then RSVP embeds an integrity object within secure cleartext RSVP messages sent between peers. The integrity object includes a key ID unique to the sender, a message sequence number, and a keyed message digest. These attributes enable verification of both packet content and sender. For all potential RSVP peers, you must configure the same key on the MPLS neighbor's major interfaces and then enable RSVP authentication on these interfaces. After you enable RSVP authentication on an interface, RSVP creates a security association that includes the key, key ID, hash algorithm, and other associated attributes. Each sender and receiver pair maintains the security association for their shared key.