Browse Prior Art Database

IS-IS Extensions for Advertising Router Information (RFC7981)

IP.com Disclosure Number: IPCOM000248038D
Original Publication Date: 2016-Oct-01
Included in the Prior Art Database: 2016-Oct-20
Document File: 20 page(s) / 20K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

L. Ginsberg: AUTHOR [+3]

Abstract

There are several situations where it is useful for the IS-IS [ISO10589] [RFC1195] routers to learn the capabilities of the other routers of their IS-IS level, area, or routing domain. For the sake of illustration, three examples related to MPLS Traffic Engineering (TE) are described here:

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 14% of the total text.

Internet Engineering Task Force (IETF)                       L. Ginsberg Request for Comments: 7981                                    S. Previdi Obsoletes: 4971                                            Cisco Systems Category: Standards Track                                        M. Chen ISSN: 2070-1721                             Huawei Technologies Co., Ltd                                                             October 2016

           IS-IS Extensions for Advertising Router Information

Abstract

   This document defines a new optional Intermediate System to    Intermediate System (IS-IS) TLV named CAPABILITY, formed of multiple    sub-TLVs, which allows a router to announce its capabilities within    an IS-IS level or the entire routing domain.  This document obsoletes    RFC 4971.

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    http://www.rfc-editor.org/info/rfc7981.

Copyright Notice

   Copyright (c) 2016 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    (http://trustee.ietf.org/license-info) 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.

Ginsberg, et al.             Standards Track                    [Page 1]
 RFC 7981          IS-IS Ext for Advertising Router Info     October 2016

 Table of Contents

   1. Introduction ....................................................2

      1.1. Requirements Language ......................................3

   2. IS-IS Router CAPABILITY TLV .....................................3

   3. Elements of Procedure ...........................................4

   4. Interoperability with Routers Not Supporting the IS-IS Router

      CAPABILITY TLV...