B. Allen Chairman - ANSI T1X1.5 Internet Draft Cambrian Systems Point-to-Point Protocol Extensions WG J. Anderson Expire in six months Lucent Technologies D. Kostas GTE B. Wang AT&T A. White Sprint Corporation PPP Over SONET Mapping Status of this Memo This document is an Internet-Draft. 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. 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.'' To learn the current status of any Internet-Draft, please check the ``1id-abstracts.txt'' listing contained in the Internet- Drafts Shadow Directories on ftp.is.co.za (Africa), nic.nordu.net (Europe), munnari.oz.au (Pacific Rim), ds.internic.net (US East Coast), or ftp.isi.edu (US West Coast). This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Abstract This Internet Draft addresses the PPP/SONET interface defined in the IETF RFC 1619 and the standards work underway in T1X1 on SONET. Allen, Anderson, et al. [Page 1] PPP over SONET Mapping October 1997 ANSI accredited T1 Technical Subcommittee T1X1 is responsible for SONET standards development documented in ANSI T1.105. This development includes SONET rates, formats and payload mappings specifications. It has recently been brought to T1X1's attention the existence of IETF RFC 1619 that defines a mapping for IP/PPP onto SONET. Results from technical analyses and laboratory tests of the RFC 1619 mapping have led T1X1 to conclude that RFC 1619, under certain conditions, is not capable of providing payload transparency in SONET transport networks. This technical flaw is a major concern to network operators for it can lead to unexpected SONET transport system behavior and failures. These results are documented in contribution T1X1.5/97-105 (URL ftp://ftp.t1.org/pub/t1x1/x1.5/7x151050.pdf). As such, T1X1 is urgently developing a solution to the above noted technical flaw and intends to publish the IP/PPP mapping for SONET signals in ANSI T1.105. The target time frame for reaching technical consensus on this work is April 1998. With the intent of establishing global standards for SDH, T1X1 is also pursuing specification of the IP/PPP mapping for SDH signals in ITU-T Recommendation G.707. The target time frame for completing the G.707 enhancement is not yet determined, but is anticipated to be as early as October 1998. A T1X1.5 ad hoc meeting is scheduled for the first week in December (exact dates TBD) in Kansas City for addressing IP/PPP over SONET mapping requirements and possible solutions. IETF input is invited and participants can attend to submit their proposals to this meeting and subsequent T1X1.5 meetings. Please contact Brent Allen or Al White (contact information given below) for further information. Authors' Address Brent Allen E-mail: ballen@cambriansys.com Telephone: +1-613-599-6060 (ext. 4899) Fax: +1-613-591-2035 Cambrian Systems 555 Legget Drive Kanata, Ontario K2K 2X3 CANADA Jon Anderson E-mail: jonanderson@lucent.com Telephone: +1-732-949-0634 Fax: +1-732-949-3210 Allen, Anderson, et al. [Page 2] PPP over SONET Mapping October 1997 Lucent Technologies - Bell Laboratories Room 2G-538 101 Crawfords Corner Road Holmdel, NJ 07733-3030 USA Demos Kostas E-mail: demos.kostas@telops.gte.com Telephone: +1 972 718 6291 Fax:+1 972 718 4393 Al White E-mail: al.white@mail.sprint.com Telephone: +1-816-854-5266 Fax: +1-816-854-5189 Sprint Corporation 901 East 104th St. Mailstop MOKCMD0808 Kansas City, MO 64131 USA Allen, Anderson, et al. [Page 3] ------------------------------------------------------------------------------