--- 1/draft-ietf-idr-ext-opt-param-00.txt 2010-09-20 23:12:13.000000000 +0200 +++ 2/draft-ietf-idr-ext-opt-param-01.txt 2010-09-20 23:12:13.000000000 +0200 @@ -1,69 +1,63 @@ Internet Engineering Task Force E. Chen Internet-Draft Cisco Systems Intended status: Standards Track J. Scudder -Expires: September 27, 2010 Juniper Networks - March 26, 2010 +Expires: March 24, 2011 Juniper Networks + September 20, 2010 Extended Optional Parameters Length for BGP OPEN Message - draft-ietf-idr-ext-opt-param-00 + draft-ietf-idr-ext-opt-param-01 Abstract 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 length field. BGP Capabilities are carried in this field and may foreseeably exceed 255 octets in the future, leading to concern about this limitation. In this document we extend the BGP OPEN length field in a backward- compatible manner. The Parameter Length field of individual Optional Parameters is similarly extended. 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. Internet-Drafts are working documents of the Internet Engineering - Task Force (IETF), its areas, and its working groups. Note that - other groups may also distribute working documents as Internet- - Drafts. + 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 time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." - The list of current Internet-Drafts can be accessed at - 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. + This Internet-Draft will expire on March 24, 2011. Copyright Notice Copyright (c) 2010 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 BSD License. + described in the Simplified BSD License. 1. Introduction The Optional Parameters Length field in the BGP OPEN message is defined in the base BGP specification [RFC4271] as one octet, thus limiting the Optional Parameters field in the OPEN message to 255 octets. As BGP Capabilities [RFC5492] are carried in the Optional Parameters field, and new BGP capabilities continue to be introduced, the limitation is becoming a concern for BGP development.