draft-ietf-idr-ext-opt-param-00.txt		draft-ietf-idr-ext-opt-param-01.txt
	Internet Engineering Task Force E. Chen		Internet Engineering Task Force E. Chen
	Internet-Draft Cisco Systems		Internet-Draft Cisco Systems
	Intended status: Standards Track J. Scudder		Intended status: Standards Track J. Scudder
	Expires: September 27, 2010 Juniper Networks		Expires: March 24, 2011 Juniper Networks
	March 26, 2010		September 20, 2010
	Extended Optional Parameters Length for BGP OPEN Message		Extended Optional Parameters Length for BGP OPEN Message
	draft-ietf-idr-ext-opt-param-00		draft-ietf-idr-ext-opt-param-01
	Abstract		Abstract
	The Optional Parameters in the BGP OPEN message as defined in the		The Optional Parameters in the BGP OPEN message as defined in the
	base BGP specification are limited to 255 octets due to a one-octet		base BGP specification are limited to 255 octets due to a one-octet
	length field. BGP Capabilities are carried in this field and may		length field. BGP Capabilities are carried in this field and may
	foreseeably exceed 255 octets in the future, leading to concern about		foreseeably exceed 255 octets in the future, leading to concern about
	this limitation.		this limitation.
	In this document we extend the BGP OPEN length field in a backward-		In this document we extend the BGP OPEN length field in a backward-
	compatible manner. The Parameter Length field of individual Optional		compatible manner. The Parameter Length field of individual Optional
	Parameters is similarly extended.		Parameters is similarly extended.
	Status of this Memo		Status of this Memo
	This Internet-Draft is submitted to IETF 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), its areas, and its working groups. Note that		Task Force (IETF). Note that other groups may also distribute
	other groups may also distribute working documents as Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts.		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."
	The list of current Internet-Drafts can be accessed at		This Internet-Draft will expire on March 24, 2011.
	http://www.ietf.org/ietf/1id-abstracts.txt.
	The list of Internet-Draft Shadow Directories can be accessed at
	http://www.ietf.org/shadow.html.
	This Internet-Draft will expire on September 27, 2010.
	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
	carefully, as they describe your rights and restrictions with respect		carefully, as they describe your rights and restrictions with respect
	to this document. Code Components extracted from this document must		to this document. Code Components extracted from this document must
	include Simplified BSD License text as described in Section 4.e of		include Simplified BSD License text as described in Section 4.e of
	the Trust Legal Provisions and are provided without warranty as		the Trust Legal Provisions and are provided without warranty as
	described in the BSD License.		described in the Simplified BSD License.
	1. Introduction		1. Introduction
	The Optional Parameters Length field in the BGP OPEN message is		The Optional Parameters Length field in the BGP OPEN message is
	defined in the base BGP specification [RFC4271] as one octet, thus		defined in the base BGP specification [RFC4271] as one octet, thus
	limiting the Optional Parameters field in the OPEN message to 255		limiting the Optional Parameters field in the OPEN message to 255
	octets. As BGP Capabilities [RFC5492] are carried in the Optional		octets. As BGP Capabilities [RFC5492] are carried in the Optional
	Parameters field, and new BGP capabilities continue to be introduced,		Parameters field, and new BGP capabilities continue to be introduced,
	the limitation is becoming a concern for BGP development.		the limitation is becoming a concern for BGP development.
End of changes. 6 change blocks.
	15 lines changed or deleted		9 lines changed or added
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