IS-IS over IPv4

Document Type Expired Internet-Draft (isis WG)
Authors Atul Bansal  , Tony Przygienda  , Ajay Patel 
Last updated 1999-10-11 (latest revision 1999-06-07)
Stream Internet Engineering Task Force (IETF)
Expired & archived
plain text pdf htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This draft describes an optional implementation technique within IS-IS [ISO90, Cal90a, Cal90b] used today by several ISPs for routing within their clouds. IS-IS is an interior gateway routing protocol developed originally by OSI and used with IP extensions as IGP. This draft describes how to encapsulate IS-IS packets in IPv4 [Pos81] format. Such an encapsulation has many advantages, one of those being the possibility to run integrated IS-IS on anything that understands IPv4, including avian carriers [Wai90]. Encapsulation of IS-IS PDUs in IPv6 is outside the scope of this document.


Atul Bansal (
Tony Przygienda (
Ajay Patel (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)