draft-xu-isis-ipv6-router-id

Last Version:	draft-xu-isis-ipv6-router-id-00.txt		Tracker Entry
Date:	25-Apr-2014
Disposition:	.draft-xu-isis-routable-ip-address

Network Working Group                                              X. Xu
Internet-Draft                                                    Huawei
Intended status: Standards Track                          April 24, 2014
Expires: October 26, 2014


         Carrying IPv6 Router ID in IS-IS Router Capability TLV
                    draft-xu-isis-ipv6-router-id-00

Abstract

   This document proposes a new sub-TLV of the IS-IS Router CAPABILITY
   TLV, called IPv6 Router ID sub-TLV.

Status of This Memo

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

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   This Internet-Draft will expire on October 26, 2014.

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Table of Contents

   .  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  IPv6 Router ID Sub-TLV  . . . . . . . . . . . . . . . . . . .   2
   4.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   3
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   3
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   3
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   3
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   3
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   3

.  Introduction

   There are several situations where it is useful for the IS-IS routers
   in one area to establish the correlations between the IPv6 addresses
   and the capabilities of the other routers in another area.  However,
   in the IS-IS Router CAPABILITY TLV as defined in [RFC4971], which is
   appliable for both IPv4 IS-IS [RFC1195] [RFC5305] and IPv6 IS-IS
   [RFC5308], only a 4-octet router ID is contained.  Therefore, this
   document propose a new sub-TLV of this CAPABILITY TLV to carry an
   16-octect router ID.  This 16-octect router ID MUST be a routable
   IPv6 global address of the router originating the CAPABILITY TLV.

1.1.  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].

.  Terminology

   This memo makes use of the terms defined in [RFC4971].

.  IPv6 Router ID Sub-TLV

   A new sub-TLV of the IS-IS Router Capability TLV, called IPv6 Router
   ID sub-TLV is defined to carry a routable IPv6 global address of the
   router originating the CAPABILITY TLV.  The Type of this sub-TLV is
   TBD, the Length is set to 16, and the Value field contains an
   routable IPv6 global address of the router originating the CAPABILITY
   TLV.  The scope of the advertisement depends on the application but
   it is recommended that it SHOULD be domain-wide.






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Internet-Draft                                                April 2014


.  Acknowledgements

   TBD.

.  IANA Considerations

   This memo includes a request to IANA to allocate a sub-TLV type
   within the IS-IS Router Capability TLV.

.  Security Considerations

   This document does not introduce any new security risk.

.  References

7.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC4971]  Vasseur, JP., Shen, N., and R. Aggarwal, "Intermediate
              System to Intermediate System (IS-IS) Extensions for
              Advertising Router Information", RFC 4971, July 2007.

7.2.  Informative References

   [RFC1195]  Callon, R., "Use of OSI IS-IS for routing in TCP/IP and
              dual environments", RFC 1195, December 1990.

   [RFC5305]  Li, T. and H. Smit, "IS-IS Extensions for Traffic
              Engineering", RFC 5305, October 2008.

   [RFC5308]  Hopps, C., "Routing IPv6 with IS-IS", RFC 5308, October
              2008.

Author's Address

   Xiaohu Xu
   Huawei

   Email: xuxiaohu@huawei.com










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