RFC 2763 defined a simple and dynamic mechanism for routers running IS-IS to learn about symbolic hostnames. RFC 2763 defined a new TLV that allows the IS-IS routers to flood their name-to-systemID mapping information across the IS-IS network. This document obsoletes RFC 2763. This document moves the capability provided by RFC 2763 to the Standards Track.
RFC 5301-2008 history
2008RFC 5301-2008 Dynamic Hostname Exchange Mechanism for IS-IS