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IS-IS Multi-Instance (RFC8202) Disclosure Number: IPCOM000250246D
Original Publication Date: 2017-Jun-01
Included in the Prior Art Database: 2017-Jun-17
Document File: 32 page(s) / 35K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

L. Ginsberg: AUTHOR [+3]


An existing limitation of the protocol defined by [ISO10589] is that only one instance of the protocol can operate on a given circuit. This document defines an extension to IS-IS to remove this restriction. The extension is referred to as "Multi-Instance IS-IS" (MI-IS-IS).

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Internet Engineering Task Force (IETF)                       L. Ginsberg Request for Comments: 8202                                    S. Previdi Obsoletes: 6822                                            Cisco Systems Category: Standards Track                                  W. Henderickx ISSN: 2070-1721                                                    Nokia                                                                June 2017

                           IS-IS Multi-Instance


   This document describes a mechanism that allows a single router to    share one or more circuits among multiple Intermediate System to    Intermediate System (IS-IS) routing protocol instances.

   Multiple instances allow the isolation of resources associated with    each instance.  Routers will form instance-specific adjacencies.    Each instance can support multiple topologies.  Each topology has a    unique Link State Database (LSDB).  Each Protocol Data Unit (PDU)    will contain a new Type-Length-Value (TLV) identifying the instance    and the topology (or topologies) to which the PDU belongs.

   This document obsoletes RFC 6822.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Further information on    Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

Ginsberg, et al.             Standards Track                    [Page 1]
 RFC 8202                  IS-IS Multi-Instance                 June 2017

 Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the    document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal    Provisions Relating to IETF Documents    ( in effect on the date of    publication of this document.  Please review these documents    carefully, as they describe your rights and restrictions with respect    to this document.  Code Components extracted from this document must    include Simplified BSD License text as described in Section 4.e of    the Trust Legal Provisions and are provided without warranty as    described in the Simplified BSD License.