Advertising Per-node Admin Tags in IS-IS
draft-ietf-isis-node-admin-tag-04

The information below is for an old version of the document
Document Type Active Internet-Draft (isis WG)
Last updated 2015-11-07
Replaces draft-psarkar-isis-node-admin-tag
Stream IETF
Intended RFC status Proposed Standard
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IS-IS for IP Internets                                    P. Sarkar, Ed.
Internet-Draft                                                H. Gredler
Intended status: Standards Track                                S. Hegde
Expires: May 10, 2016                             Juniper Networks, Inc.
                                                            S. Litkowski
                                                             B. Decraene
                                                                  Orange
                                                                   Z. Li
                                                     Huawei Technologies
                                                                E. Aries
                                                            R. Rodriguez
                                                                Facebook
                                                            H. Raghuveer
                                                        November 7, 2015

                Advertising Per-node Admin Tags in IS-IS
                   draft-ietf-isis-node-admin-tag-04

Abstract

   This document describes an extension to IS-IS protocol to add an
   optional operational capability, that allows tagging and grouping of
   the nodes in an IS-IS domain.  This allows simple management and easy
   control over route and path selection, based on local configured
   policies.

   This document describes the protocol extensions to disseminate per-
   node administrative tags in IS-IS protocols.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any

Sarkar, et al.            Expires May 10, 2016                  [Page 1]
Internet-Draft  Advertising Per-node Admin Tags in IS-IS   November 2015

   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 10, 2016.

Copyright Notice

   Copyright (c) 2015 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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Administrative Tag  . . . . . . . . . . . . . . . . . . . . .   3
   3.  TLV format  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Per-node Admin Tag sub-TLV  . . . . . . . . . . . . . . .   4
   4.  Elements of Procedure . . . . . . . . . . . . . . . . . . . .   5
   5.  Applications  . . . . . . . . . . . . . . . . . . . . . . . .   6
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  12
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  12
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   This document provides mechanisms to advertise per-node
   administrative tags in the IS-IS Link State PDU [RFC1195].  In
   certain path-selection applications like for example in traffic-
   engineering or LFA [RFC5286] selection there is a need to tag the
   nodes based on their roles in the network and have policies to prefer
   or prune a certain group of nodes.

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2.  Administrative Tag

   For the purpose of advertising per-node administrative tags within
   IS-IS, a new sub-TLV to the IS-IS Router Capability TLV-242 that is
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