draft-ietf-isis-layer2-06.txt   draft-ietf-isis-layer2-07.txt 
Network Working Group A. Banerjee Network Working Group A. Banerjee
Internet-Draft Cisco Systems Internet-Draft Cisco Systems
Intended status: Standards Track D. Ward Intended status: Standards Track D. Ward
Expires: January 8, 2011 Juniper Networks Expires: March 30, 2011 Juniper Networks
July 07, 2010 September 26, 2010
Extensions to IS-IS for Layer-2 Systems Extensions to IS-IS for Layer-2 Systems
draft-ietf-isis-layer2-06 draft-ietf-isis-layer2-07
Abstract Abstract
This document specifies the IS-IS extensions necessary to support This document specifies the IS-IS extensions necessary to support
multi-link IPv4 and IPv6 networks, as well as to provide true link link state routing to any protocols running directly over layer 2.
state routing to any protocols running directly over layer 2. While While supporting this concept involves several pieces, this document
supporting this concept involves several pieces, this document only only describes extensions to IS-IS. Furthermore, the TLVs described
describes extensions to IS-IS. We leave it to the systems using in this document are generic layer 2 additions and specific ones as
these IS-IS extensions to explain how the information carried in needed are defined in the IS-IS technology specific extensions. We
IS-IS is used. leave it to the systems using these IS-IS extensions to explain how
the information carried in IS-IS is used.
Status of this Memo Status of this Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on January 8, 2011. This Internet-Draft will expire on March 30, 2011.
Copyright Notice Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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6.1. Normative References . . . . . . . . . . . . . . . . . . . 9 6.1. Normative References . . . . . . . . . . . . . . . . . . . 9
6.2. Informative References . . . . . . . . . . . . . . . . . . 9 6.2. Informative References . . . . . . . . . . . . . . . . . . 9
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 10 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 10
1. Overview 1. Overview
There are a number of systems (for example, [RBRIDGES], [802.1aq], There are a number of systems (for example, [RBRIDGES], [802.1aq],
[OTV]) that use layer 2 addresses carried in a link state routing [OTV]) that use layer 2 addresses carried in a link state routing
protocol, specifically IS-IS [IS-IS] [RFC1195], to provide true layer protocol, specifically IS-IS [IS-IS] [RFC1195], to provide true layer
2 routing. In almost all the technologies mentioned above, classical 2 routing. In almost all the technologies mentioned above, classical
Layer 2 packets are encapsulated with an outer header. This outer Layer 2 packets are encapsulated with an outer header. The outer
header format varies across all these technologies. This outer
header is used to route the encapsulated packets to their header is used to route the encapsulated packets to their
destination. The outer header format varies across all these destination.
technologies. Technology scoped documents describe the overlay frame
formats, the distribution and use of the identifier in those frames.
In this document we specify a set of TLVs to be added to [IS-IS] In this document we specify a set of TLVs to be added to [IS-IS]
level 1 PDUs, to support these proposed systems. The TLVs are level 1 PDUs, to support these proposed systems. The TLVs are
generic layer 2 additions and specific ones as needed are defined in generic layer 2 additions and specific ones as needed are defined in
the IS-IS technology specific extensions. This draft does not the IS-IS technology specific extensions. This draft does not
propose any new forwarding mechanisms using this additional propose any new forwarding mechanisms using this additional
information carried within IS-IS. information carried within IS-IS.
1.1. Terminology 1.1. Terminology
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MT-Port-Cap-TLV (143) X - - MT-Port-Cap-TLV (143) X - -
IANA SHOULD manage the remaining space using the IETF Review method IANA SHOULD manage the remaining space using the IETF Review method
[RFC 5226]. [RFC 5226].
6. References 6. References
6.1. Normative References 6.1. Normative References
[IS-IS] ISO/IEC 10589, "Intermediate System to Intermediate System [IS-IS] ISO/IEC 10589:2002, Second Edition, "Intermediate System
Intra-Domain Routing Exchange Protocol for use in to Intermediate System Intra-Domain Routing Exchange
Conjunction with the Protocol for Providing the Protocol for use in Conjunction with the Protocol for
Connectionless-mode Network Service (ISO 8473)", 2005. Providing the Connectionless-mode Network Service (ISO
8473)", 2002.
[RFC 1195] [RFC 1195]
Callon, R., "Use of OSI IS-IS for Routing in TCP/IP and Callon, R., "Use of OSI IS-IS for Routing in TCP/IP and
Dual Environments", 1990. Dual Environments", 1990.
[RFC 4971]
Vasseur, JP. and N. Shen, "Intermediate System to
Intermediate System (IS-IS) Extensions for Advertising
Router Information", 2007.
[RFC 5305]
Li, T. and H. Smit, "IS-IS Extensions for Traffic
Engineering", 2008.
[RFC 5306]
Shand, M. and L. Ginsberg, "Restart Signaling for
Intermediate System to Intermediate System (IS-IS)", 2004.
6.2. Informative References 6.2. Informative References
[IEEE 802.1aq] [IEEE 802.1aq]
"Standard for Local and Metropolitan Area Networks / "Standard for Local and Metropolitan Area Networks /
Virtual Bridged Local Area Networks / Amendment 9: Virtual Bridged Local Area Networks / Amendment 9:
Shortest Path Bridging, Draft IEEE P802.1aq/D1.5", 2008. Shortest Path Bridging, Draft IEEE P802.1aq/D1.5", 2008.
[OTV] Grover, H., Farinacci, D., and D. Rao, "OTV: Overlay [OTV] Grover, H., Farinacci, D., and D. Rao, "OTV: Overlay
Transport Virtualization", draft-hasmit-otv-00, 2010. Transport Virtualization", draft-hasmit-otv-00, 2010.
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