For the most complete and latest overview go to https://datatracker.ietf.org/wg/lisp/

The IETF LISP Working Group has completed the baseline LISP RFCs!. These core LISP RFCs are available on the IETF LISP Working Group site. The core documents include:

• RFC 6830 – The Locator/ID Separation Protocol (LISP)
• RFC 6831 – The Locator/ID Separation Protocol (LISP) for Multicast Environments
• RFC 6832 – Interworking between Locator/ID Separation Protocol (LISP) and Non-LISP Sites
• RFC 6833 – Locator/ID Separation Protocol (LISP) Map-Server Interface
• RFC 6834 – Locator/ID Separation Protocol (LISP) Map-Versioning
• RFC 6835 – The Locator/ID Separation Protocol Internet Groper (LIG)
• RFC 6836 – Locator/ID Separation Protocol Alternative Logical Topology (LISP+ALT)

Other drafts are still working their way through the IETF LISP Working Group. These documents are all posted on the IETF LISP Working Group site, here: IETF LISP Working Group