[IMR] IMR89-06.TXT JUNE 1989 INTERNET MONTHLY REPORTS ------------------------ The purpose of these reports is to communicate to the Internet Research Group the accomplishments, milestones reached, or problems discovered by the participating organizations. This report is for research use only, and is not for public distribution. Each organization is expected to submit a 1/2 page report on the first business day of the month describing the previous month's activities. These reports should be submitted via network mail to Ann Westine (Westine@ISI.EDU) or Karen Roubicek (Roubicek@NNSC.NSF.NET). TABLE OF CONTENTS IAB Task Forces APPLICATIONS - USER INTERFACE . . . . . . . . . . . . . . page 3 AUTONOMOUS NETWORKS . . . . . . . . . . . . . . . . . . . page 3 END-TO-END SERVICES . . . . . . . . . . . . . . . . . . . page 3 INTERNET ARCHITECTURE . . . . . . . . . . . . . . . . . . page 5 INTERNET ENGINEEERING . . . . . . . . . . . . . . . . . . page 5 INTERNET MANAGEMENT . . . . . . . . . . . . . . . . . . . page 8 PRIVACY . . . . . . . . . . . . . . . . . . . . . . . . . page 8 SCIENTIFIC REQUIREMENT . . . . . . . . . . . . . . . . . page 8 DSAB . . . . . . . . . . . . . . . . . . . . . . . . . . page 8 Westine [Page 1] Internet Monthly Report June 1989 Internet Projects BARRNET . . . . . . . . . . . . . . . . . . . . . . . . . page 9 BOLT BERANEK AND NEWMAN, INC., . . . . . . . . . . . . . page 9 CERFNET . . . . . . . . . . . . . . . . . . . . . . . . . page 11 CICNET. . . . . . . . . . . . . . . . . . . . . . . . . . page 13 CORNELL . . . . . . . . . . . . . . . . . . . . . . . . . page 13 ISI . . . . . . . . . . . . . . . . . . . . . . . . . . . page 13 JVNCNET, NORTH EAST RESEARCH REGIONAL NETWORK . . . . . . page 14 LOS NETTOS . . . . . . . . . . . . . . . . . . . . . . . page 15 MERIT/UMNET . . . . . . . . . . . . . . . . . . . . . . . page 15 MIDNET . . . . . . . . . . . . . . . . . . . . . . . . . page 15 MIT . . . . . . . . . . . . . . . . . . . . . . . . . . . page 15 MITRE . . . . . . . . . . . . . . . . . . . . . . . . . . page 15 MRNET. . . . . . . . . . . . . . . . . . . . . . . . . . page 16 NCAR/USAN . . . . . . . . . . . . . . . . . . . . . . . . page 16 NEW ENGLAND ACADEMIC AND RESEARCH NETWORK . . . . . . . . page 16 NORTHWESTNET. . . . . . . . . . . . . . . . . . . . . . . page 16 NSFNET . . . . . . . . . . . . . . . . . . . . . . . . . page 16 NTA . . . . . . . . . . . . . . . . . . . . . . . . . . . page 18 NYSERNET . . . . . . . . . . . . . . . . . . . . . . . . page 18 OARNET . . . . . . . . . . . . . . . . . . . . . . . . . page 19 PITTSBURGH SUPERCOMPUTER CENTER . . . . . . . . . . . . . page 19 SAN DIEGO SUPERCOMPUTER CENTER . . . . . . . . . . . . . page 19 SESQUINET . . . . . . . . . . . . . . . . . . . . . . . . page 20 SRI . . . . . . . . . . . . . . . . . . . . . . . . . . . page 20 SURANET . . . . . . . . . . . . . . . . . . . . . . . . . page 21 TEXAS HIGHER EDUCATION NETWORK . . . . . . . . . . . . . page 21 UCAR/BOLT BERANEK and NEWMAN, INC., NNSC . . . . . . . . page 21 UCL . . . . . . . . . . . . . . . . . . . . . . . . . . . page 21 UDEL. . . . . . . . . . . . . . . . . . . . . . . . . . . page 22 UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN/NCSANET . . . page 23 WESTNET . . . . . . . . . . . . . . . . . . . . . . . . . page 23 Westine [Page 2] Internet Monthly Report June 1989 IAB TASK FORCE REPORTS ---------------------- APPLICATIONS -- USER INTERFACE The task force met June 13-15 at Bellcore in Red Bank and Morristown, NJ. Significant topics of discussion included audio servers, floor control in the context of real-time teleconferencing, connection architecture, and broadband testbeds. Further details will hopefully appear in the next monthly! Keith Lantz (LANTZ@ORC.OLIVETTI.COM) AUTONOMOUS NETWORKS ANTF is planning for a small meeting in July in conjunction with ORWG. Plans are underway to begin experimental implementations of various Policy Routing functions. Our next two-day meeting will be in September or October on the East Coast. Deborah Estrin (Estrin@OBERON.USC.EDU) END-TO-END SERVICES The End-to-End task force met on June 7-8, 1989 at Lawrence Berkeley Laboratory (LBL), hosted by Van Jacobson. Major discussion centered on three topics. Congestion Control Scott Shenker described research on congestion control, and in particular on Fair Queueing, at Xerox PARC. Dave Clark and Van Jacobson each described their work on congestion control, and the group then held a lively discussion of these issues. Gateway queueing algorithms control the interactions among the different source hosts' datagram streams; this indirectly controls congestion through the operation of the end-to-end flow control of the hosts. Shenker presented analysis and simulations demonstrating the performance benefits of Fair Queueing (FQ), resulting from the insulation it provides between sources. Westine [Page 3] Internet Monthly Report June 1989 Jacobson advanced the thesis that a "sufficiently complicated net" will exhibit a phase transition leading to large spatial oscillations of traffic. The following questions emerged from the discussion: 1. Is FQ too fair? (How about large server hosts with multiple connections?) 2. How rapidly is steady state reached, both in theory and practice? For example, if steady state is reached very slowly, theoretical stability results may not be very useful for real systems. 3. For a steady-state traffic pattern, can we devise a flow control algorithm that will prevent long-lived oscillations? 4. Can we demonstrate the phase transition phenomenon, by analysis and/or simulation? 5. Do the gateways need to estimate time constants and actively anticipate congestion, in order to damp oscillations? VMTP Dave Cheriton reported on some further thinking he has been doing on VMTP. He outlined some changes that would modify the protocol without changing the external model (user interface). The proposed changes are designed to improve efficiency (lower overhead and delay) for larger transfers, and embody a partitioning of functions between those that are performed seldom and those required for actual data streaming. VMTP now supports the socket routine "select", to provide an asynchronous interface. IP Multicasting Steve Deering reported on progress of IP multicasting work. * An IP multicast Mazewar program will be out very soon. * IP multicasting is being installed into NTP at Maryland, and into the ISIS system at Cornell. Sun RPC has been modified to use multicasting. Westine [Page 4] Internet Monthly Report June 1989 * There is serious interest within the OSPFIGP WG of IETF on incorporating multicast routing. This appears to be a natural extension, although it is too large an addition to be included in the initial OSPFIGP version. One problem with using IP multicasting at present is the general scarcity of multicast-capable interface hardware. We hope that the vendors will soon recognize this need and fill it. The group began discussion of plans for performing a major demonstration of multicasting, perhaps using the upcoming Defense Research Internet lines for a national testbed. Suggested applications include an interactive game (e.g., Mazewar), teleconferencing, and the multicast distribution of data (e.g., netnews). Finally, Scott Shenker of Xerox PARC and Lixia Zhang of MIT have joined the task force. Bob Braden (Braden@ISI.EDU) INTERNET ARCHITECTURE The Workshop on the Future of the Internet System Architecture and TCP/IP Protocols was held 1-2 June 1989 at the University of Delaware. About 77 souls attended the workshop, which included a day of individual presentations and a day of panel discussions. The proceedings are now being edited for early publication in a special issue of the ACM Computer Communications Review. Dave Mills (Mills@HUEY.UDEL.EDU) INTERNET ENGINEERING 1. Two drafts documents are now being circulated by the Point- Point Protocol Working Group. One is a white paper on requirements. The second is the preliminary protocol specification. See 3. below for information on obtaining copies. 2. The IETF will meet at Stanford University on July 25-28, 1989. Eighteen Working Groups are scheduled to meet. Send to ietf-request@venera.isi.edu for a copy of the preliminary agenda. Westine [Page 5] Internet Monthly Report June 1989 Following a suggestion at the April IETF meeting, another refinement was suggested to the agenda format to give even more time for Working Groups activity. The suggested schedule was: Days 1 and 2 9 am - 12 WG Morning session 1 pm - 4pm WG Afternoon session 4 pm - 5:30 Technical Presentations (in Plenary) Day 3 9 am - 12 WG Morning session 1 pm - 5:30 pm Technical Presentations (in Plenary) Day 4 9 am - 12 WG Reports This gives an additional period for WG sessions, making a total of five session, but retains the overall time available for technical Plenary presentations. This goal is to reduce the number of overlapping WG meetings. This format will be tried as an experiment at the next several meetings. 3. The "IETF:" and the "INTERNET-DRAFTS:" directories at the SRI-NIC.ARPA contain information about IETF activities, available by anonymous FTP. These directories have been reorganized and brought up-to-date. The "IETF:" directory contains: - a general description of the IETF (history, organization) - a summary of active Working Groups within the IETF - IETF meeting dates/locations - upcoming meeting information - the upcoming meeting agenda, and - README file with an overview of directory contents. In addition, the directory contains the charters, status updates and current meeting reports for each Working Group. These WG files are named in the following fashion: .charter .status .report This Working Group information corresponds to the information from the most recent IETF Proceedings. The "INTERNET-DRAFTS:" directory contains draft documents that will be submitted ultimately to the RFC Editor to be considered Westine [Page 6] Internet Monthly Report June 1989 for publishing as RFCs. Review and comments are encouraged and should be addressed to the responsible persons or Working Group whose names and email addresses are listed on the first page of the respective draft. There is also a file containing an index and abstract of all draft documents in the directory. The following drafts are now available : Requirements for Internet Hosts -- Communication Layers, edited by Robert Braden for the Host Requirements Working Group, 16 June 89 Requirements for Internet Hosts -- Application Layer, edited by Robert Braden for the Host Requirements Working Group, 22 May 89. Requirements for an Internet Standard Point-to-Point Protocol, edited by Drew Perkins for the PT-PT Protocol Working Group, June 1989 MIL name transition is proceeding on schedule. So far we have completed the rename process for more than 1,100 networks, and 26 hosts, into the MIL domain. We have been assigning an average of 55 new connected IP network numbers per month; by the end of June there were a total of 1,648 numbers assigned. Domain registrations are also steadily increasing; we've been registering an average of 46 new domains each month. There are now 984 domains registered; 41 of those are top-level domains and 913 are second-level domains. Mary Stahl (STAHL@NIC.DDN.MIL) Internet Research Jose J. Garcia-Luna attended the FRICC Workshop on Coordinated OSI Transition, which took place on June 14th at the Marriot, Wash Dulles Airport. The meeting was chaired by the IETF chair, Phill Gross, and focused on the issues important for implementing OSI migration with regard to directory services in the Internet. Jose J. Garcia-Luna and Zaw-Sing Su attended INARC meeting June 1-2 at University of Delaware, chaired by Dave Mills. Zaw-Sing Su (ZSu@SRI.COM) Westine [Page 20] Internet Monthly Report June 1989 SURANET ------- No report received. TEXAS HIGHER EDUCATION NETWORK ------------------------------ THEnet's Network Information Center machine, "nic.the.net" was upgraded from a VAXstation II to a VAXstation 3500. by Tracy LaQuey (tracy@sirius.cc.utexas.edu) UCAR/BOLT BERANEK and NEWMAN, INC., NNSC ---------------------------------------- The NNSC collected several entries for the Internet Resource Guide, which will start distribution during the first week of July. For more information about the guide, send messages to resource- guide@nnsc.nsf.net. Craig Partridge attended the INARC Meeting and the End-2-End Task Force meeting, and Karen Roubicek participated in an informal meeting of the IETF User Services Working Group held during the FARNET meeting. by Karen Roubicek (roubicek@nnsc.nsf.net) UCL ---- 1. We have put up the Nottingham (J.Onions) Remote Operations version of the Network Time Protocol (NTP). This is peering over X.25 (JANET) with Nottingham, and with several US sites over the Internet. We will shortly be getting a Rugby Clock Receiver so that we can run a stratum one clock for the UK. Typical ntpd output, Day 1: Neighbor address 126.0.0.1 port:10123 local address 126.0.0.1 Reach: 0377 stratum: 2, precision: 250 dispersion: 48.000000, flags: 1301, leap: 0 Reference clock ID: [128.243.20.1] timestamp: a8533dff.b435bd50 hpoll: 10, ppoll: 10, timer: 1024, sent: 47 received: 47 Delay(ms) 1234.00 1455.00 1035.00 974.00 1235.00 1234.00 1252.00 1255.00 Offset(ms) -30467.00 -30314.00 -30417.00 -30427.00 -30286.00 -30290.00 -30283.00 -30286.00 Westine [Page 21] Internet Monthly Report June 1989 delay: 974.000000 offset: -30427.000000 dsp 48.000000 Neighbor address 128.8.10.1 port:123 local address 128.16.5.50 Reach: 0353 stratum: 1, precision: 246 dispersion: 16.000000, flags: 9301, leap: 0 Reference clock ID: WWVB timestamp: a8533f92.ef5c0000 hpoll: 6, ppoll: 10, timer: 64, sent: 188 received: 159 Delay(ms) 1154.00 1307.00 1285.00 1067.00 974.00 956.00 984.00 984.00 Offset(ms) 3.00 -55.00 -120.00 -4.00 36.00 46.00 49.00 59.00 delay: 956.000000 offset: 46.000000 dsp 16.000000 2. Work continues on designing fair sharing algorithms for the potential UK-US high bandwidth link. John Crowcroft (jon@CS.UCL.AC.UK) UNIVERSITY OF DELAWARE ---------------------- 1. The Workshop on the Future of the Internet System Architecture and TCP/IP Protocols was held 1-2 June 1989 at the University of Delaware. Paul Schragger and Mike Davis spent some days transcribing and editing the workshop proceedings. Since this project produced rather more output than originally anticipated, work continues on further editing and preparation for publication. 2. Final touches are now being added on a detailed analysis and commentary of the Border Gateway Protocol (RFC1000). A plan for proposed experiments using resources of the Research Internet Backbone is nearing completion. The plan is based on relatively simple modifications to selected hosts and gateways which allow participation of research nets located far from the Backbone itself. 3. Mike Davis brought up the current version of SNMP, which now runs in assorted Suns and PCs. We are now watching our campus nets and selected SURA paths to the NSF backbone Point of Internet Presence (PIP, hereby introduced). Our system staff brought up traceroute, which immediately boggled minds demonstrating tortuous routes used by our clockworking friends. 4. The various Fuzzball time servers scattered throughout the Internet are logging increasing numbers of ICMP messages in patterns which suggest occasional massive routing loops Westine [Page 22] Internet Monthly Report June 1989 lasting in the order of a half hour. Most of these appear to involve contorted ARPANET/NSFNET paths and occasionally involve MILNET. Logging procedures have been modified to select additional related information for subsequent analysis. 5. New NTP sites have come online in Australia, Hawaii and Norway. It is reported that Japan, New Zealand and Finland will shortly be next and soon the first WACC (Worked All Continents Clocks) certificate should be awarded. Following suggestions by several people, the NTP spec was amended to revise the authentication mechanisms and move the text to an appendix. Also, a new appendix on control messages was added. Finally, a precision oven-controlled crystal oscillator arrived and began begging for an interface it a handy Fuzzball time server. Dave Mills (Mills@UDEL.EDU) UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN/NCSANET -------------------------------------------------- No report received. WESTNET -------- 1. Hewlett Packard in Fort Collins, Colorado (Westnet is secondary to BARRNET) and the Idaho National Energy Laboratory in Idaho Falls, Idaho became connected this month. 2. We expect Idaho State University in Pocatello, Idaho to become connected during the month of July. This will result in a minor topological change in the circuits in Idaho. 3. We are investigating upgrading all of Westnet's interstate circuits to T-1 for next year, and add a redundant link to run between the University of Arizona in Tucson and New Mexico Technet in Albuquerque. There is a need for faster response time during interactive sessions, and for greater bandwidth for research applications. by Pat Burns (pburns@csupwb.colostate.edu) Carol Ward (cward@spot.colorado.edu) Westine [Page 23] Internet Monthly Report June 1989