<NIS.NSF.NET> [IMR] IMR88-07.TXT
July 1988
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).
BOLT BERANEK AND NEWMAN INC.
----------------------------
VAX NETWORKING
We now have a multicast agent up and running under 4.3bsd and are
developing various applications to experiment with wide area
multicasting.
WIDEBAND NETWORK
The Wideband Net IST links which carry Arpanet traffic functioned
smoothly during July. Soon, the capacity of these trunks will be
increased moderately. This change should improve Arpanet service
and, especially, increase the capacity of remaining Wideband IST
lines to carry traffic if one of the Wideband IST sites experiences
trouble.
Westine [Page 1]
Internet Monthly Report July 1988
A multi media/video conference was held between ARPA, ISI, and BBN
during July using the Wideband Net. The conference demonstrated
the usefulness of the broadcast and stream facilities of the Net.
In order to support the heavy use of the Net by multi-site
(eventually 4 sites) video conferences and Arpanet traffic, the
BSAT software will be reconfigured to run multiple downlink
processes.
Remote monitoring has been over hauled in the BSAT. We improved
the ability to monitor different versions of BSAT host and channel
modules and to quickly change the information reported by the
BSATs.
INTERNET RESEARCH & DEVELOPMENT
The Butterfly gateway Telnet X.25 interfaces was certified by
Telenet. We are now working to begin installing the Butterfly
replacements for the LSI-11 VAN gateways.
We have begun to install a new release of Butterfly Gateway
software (Release 4.1) which includes a number of improvements.
The most important are in the area of remote monitoring and
control. The facilities in this area include:
Throughput Collection
Host Traffic Matrix Collection
Buffer Statistics
Routing Information
Interface Control (Loop, Crosspatch, Enable/Disable, Test)
Routing Updates
Trap Statistics
The release also includes an extensible access control and load
sharing mechanisms.
SATNET
July has been a very busy month for SATNET. We experienced several
outages caused by SIMP crashes and related loading problems. We
are still working on the causes of the crashes but it is now felt
they were related to higher than normal noise on the satellite
channels. We are currently working with the personnel at Roaring
Creek to resolve this problem.
The new international RSRE to BBN direct link has been ordered.
Installation and testing are planned for the first of October.
Westine [Page 2]
Internet Monthly Report July 1988
The Tanum earth station antenna is scheduled to be repointed to a
different satellite on August 20. This will remove them from the
SATNET. Work is now underway to provide a direct link from the NTA
gateway to the RSRE gateway. This will be needed to provide
INTERNET connectivity for NTA-RE.
Bob Hinden (Hinden@BBN.COM)
ISI
---
Internet Concepts Project
Jon Postel attended the IAB meeting in Santa Fe, NM, Jul 11-14.
Two RFCs and one paper were published this month.
RFC 1059: Mills, D., "Network Time protocol (Version 1)
Specification and Implementation", University
of Delaware, July 1988.
RFC 1063: Mogul, J., C. Kent (DEC), C. Partridge (BBN),
K. McCloghrie (TWG), "IP MTU Discovery
Options", July 1988
RFC 1064: Crispin, M., "Interactive Mail Access Protocol
- Version 2", SUMEX-AIM, July 1988.
Mockapetris, P., "Development of the Domain Name System",
ACM SIGCOMM 88, August 1988.
Ann Westine (Westine.ISI.EDU)
Multimedia Conferencing Project
The multimedia teleconferencing system made its official debut in a
conference of more than two sites this month. The Autonomous
Networks Task Force used it during a two day meeting among members
located at DARPA, ISI, and BBN. All three sites were displayed
simultaneously in quadrants of the video screen. At each site,
voice from the remote sites was mixed for playback, allowing all
sites to talk at once if they wished. The Diamond/MMCONF system
was used for shared document display and editing among the three
sites.
It was felt that the three site conference was effective, but that
participants needed to concentrate more, resulting in a more tiring
session than in previous teleconferences with two sites. A
Westine [Page 3]
Internet Monthly Report July 1988
contributing factor may have been that this meeting included the
largest total number of participants of any so far. Two mechanisms
were suggested to help with this problem: 1) the ability to zoom
in, audibly and/or visually, to help focus the conference during
discussions; and 2) a tool running on the workstation showing a
queue of people who would like to speak, as an improvement over
hands held in the air, as a guide to the chairman. Video zooming
is possible now, but may not be easy enough to use except by a
non-participant operator. At least one participant was quoted as
saying, "A good time was had by all".
Eve Schooler, Brian Hung, Steve Casner, Dave Walden
(schooler@ISI.EDU, hung@ISI.EDU, casner@ISI.EDU, djwalden@ISI.EDU)
NSFNET Project
Annette DeSchon nearly completed "bftptool", a window-based user
interface to BFTP for use in submitting background file transfer
requests. This interface runs on a Sun Workstation. A draft RFC on
BFTP was also completed.
Bob Braden continued work on editing the Host Requirements RFC,
being prepared by an IETF Working Group. This RFC has grown to 124
pages in length and now includes a Table of Contents and a
"Checklist". Sections on Telnet and trailer negotiation were added
this month. Several topics required considerable effort and
discussion, especially Telnet end-of-line and TCP SWS avoidance.
There is an ongoing discussion in the Working Group of how
Multihoming should be handled.
Annette DeSchon attended a meeting of the Autonomous Networks Task
Force which was teleconferenced between sites at ISI, BBN, and
DARPA, Jul 7-8. Bob Braden attended a meeting of the IAB in Santa
Fe, NM, Jul 11-14.
Bob Braden and Annette DeSchon (Braden@ISI.EDU, DeSchon@ISI.EDU)
Supercomputer and Workstation Communication Project
Alan Katz started to test the split remote editor and has been
working on which runs under GNU Emacs. The editor is written in
emacs lisp.
Alan Katz (Katz@ISI.EDU)
Westine [Page 4]
Internet Monthly Report July 1988
MIT-LCS
-------
No report received.
MITRE Corporation
-----------------
No report received.
NTA-RE and NDRE
---------------
No report received.
SRI
---
No internet related activity to report.
Zaw Sing Su (zsu@tsca.istc.sri.com)
UCL
---
Testing of the Campus FDDI net continued. We ran a range of
protocol suites, including DECNET, TCP/IP, Appletalk, OSI and Pink
Book (X.25 on a LAN/MAN) simulataneously to see if any complex
interactions caused problems. The proliferation of broadcasts
caused the only real difficulty.
Implementation work started on a hidden layer neural network model
of distributed routing and congestion control algorithms. The
current reinforcement rule is based on a Boltzmann machine
principal.
John Crowcroft (jon@CS.UCL.AC.UK)
UNIVERSITY OF DELAWARE
----------------------
1. Jeff Simpson is working on policy-based routing algorithms and
related technology. He is currently compiling a report and
classification of current policies (real or ad-hoc) used in
the Internet. Additionally, he is reviewing the policy
implementation mechanisms being proposed by various
groups/factions. He is also experimenting with various policy
Westine [Page 5]
Internet Monthly Report July 1988
restricitions and evaluating the effects on routing
performance of both real and random networks.
2. Paul Schragger continues to work on feedback-control and
rate-based concepts applied to transport-level communications.
He is currently exploring a simple non-linear network model
involving rate-based feedback from intermediate and end
systems. He is using the MIT network simulator to evaluate
various source-control schemes required for stable operation
of the transport entity with a nonlinear network model. Work
on the simlator itself continues, as well as feedback to MIT
on Sun code fixes.
3. The Network Time Protocol (NTP) has been declared an Elective
Protocol with RFC-1059 as Draft Internet Standard (DIS)
specification document. Interested chimers should tap the
ntp@trantor.umd.edu list maintained by Mike Petry, who also
has a Unix 4.3bsd daemon conforming to the specification.
4. Five of the original six NSFNET Backbone fuzzballs are back on
the air, one (UIUC) with a new WWVB radio clock. Hopefully,
the remaining holdout (SDSC) will be back soon with a
refurbished WWVB radio clock. Cornell is being lobbied to
wiretap an existing GOES satellite clock being used to
timestamp seismic data. Together with several other existing
and proposed WWV radio clocks, this makes a total of at least
nine high-accuracy (WWVB and GOES) and four medium-accuracy
(WWV) NTP primary time servers available on the Internet and
providing service to over a hundred users. In addition, the
new NSFNET Backbone NSS switch components are internally
time-synchronized using NTP, but not providing external time
service.
5. The U Delaware fuzzballs, including NTP servers, have been
rehomed to our research network 128.4, which is gatewayed to
ARPANET and SURANET via the campus fiber. Exhaustive testing
revealed previously unsuspected low-level packet leaks (about
0.7 percent) in the maze of Proteon routers stitching the
campus and SURANET together. Similar leaks involving Proteon
routers and serial lines were then found at PSC. There is as
yet insufficient data to resolve azimuth of fingerpoint. While
at it, several experiments involving the new NSFNET Backbone
and random fuzzballs revealed interesting delay anomalies yet
to be explained.
6. Dave Mills attended the IAB meeting in Santa Fe. The final
report covering issues in reliable telecommunication network
synchronization was submitted to the National Academy of
Westine [Page 6]
Internet Monthly Report July 1988
Sciences and is now being reformatted as a Department report.
Work continues on a draft report discussing issues in the
realization of a nationwide gigabit network and, in
particular, on channel-access schemes suitable for early
deployment and evaluation. Other work in progress includes a
paper on DGP in collaboration with Mike Little of SAIC.
Dave Mills (Mills@UDEL.EDU)
Westine [Page 7]
Internet Monthly Report July 1988
NSF NETWORKING
--------------
NSF NETWORKING
UCAR/BBN SYSTEMS AND TECHNOLOGIES CORPORATION, NNSC
RFC 1063, IP MTU Discovery Options, authored by J.Mogul,
C.Kent, C.Partridge and K.McCloghrie is available from the
Network Information Center in the <RFC> directory at SRI-
NIC.ARPA.
NEW NSFNET BACKBONE (MERIT)
The NSFNET backbone is now a production network. By the
beginning of July, the thirteen nodes comprising the backbone
were announcing routing information to their regionals, making
it possible for user data to flow across the network. The
AT&T circuits have been shut off and the backbone is now
entirely linked by MCI T1 lines. All of the old NSFNET
backbone fuzzballs are turned off. Final tuning is under way
to maximize speed and reliability as of July 20.
Reaching production stage has been a gradual process. Each
regional site established a schedule for moving its campus and
institutional networks from the old backbone to the new one.
Most sites started with one or two local networks of "friendly
users." As their confidence grew, each site added more traffic
by increasing the number of subnetworks routed through the
backbone .
Currently, over 200 networks are able to pass traffic on the
new NSFNET backbone. The number of academic and research
networks able to send traffic through the NSFNET backbone is
increasing by an average of two new networks per day.
Significant work has been done to improve the speed of the new
backbone over the old. In addition, hardware upgrades are now
being developed which are expected to further increase network
speed.
Westine [Page 8]
Internet Monthly Report July 1988
Reaching production stage has required multiple steps and the
cooperation of many individuals. We are very excited by the
progress of this project. None of these achievements would
have been possible without the cooperation at all levels and
across all areas of the NSFNET endeavor. We would like to
extend a special thanks to all the regional site people for
their hard work and extra efforts to make this project a
success.
by Laura Kelleher (lkelleher@merit.edu)
NSFNET BACKBONE (CORNELL UNIVERSITY THEORY CENTER)
No report received.
NSFNET BACKBONE SITES & MID-LEVEL NETWORK SITES
UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN/NSCAnet
Cutover to the NSSnet from FuzzNet was completed July 20 when
uiuc.nsf.net was turned off at 12:00 CDT. The new NSS is
handling an immense amount of traffic, about six times the
peak fuzz figures. Eight additional Minnesota networks, on
hold since April, are now being EGP'ed to the NSS. A total of
43 nets are being announced at EGP metric 0 and another 18 at
EGP metric 3. Copies of our gated.conf files and PostScript
images of UIUC's network topology are available for anonymous
FTP from uxc.cso.uiuc.edu:pub/net.
Concomitant with the increase in traffic is frequent
exhaustion of virtual circuits with the ACC-6250 X.25 link to
PSN 94. ACC says that the 128 circuit fix will be available
"in a month or two".
Ross Veach has been working on adding "long-distance" EGP
features to gated. The goal is to spread routing knowledge
selectively through a regional so that bad routing decisions
can be avoided. For UIUC and Minnesota, each has an ARPANET
gateway that's to be preferred for net-10 and all other nets
not carried on the NSSnet. Minnesota traffic for NSSnet
advertised nets is sent to UIUC. By having the two gated
programs at UIUC and Minnesota EGP peer with each other, the
regional nets in between don't have to propagate 400+ nets via
RIP. Using RIP would also capture all of Minnesota's Arpanet
bound traffic and send it to UIUC as IGP routes are favored by
gated over EGP routes.
Westine [Page 9]
Internet Monthly Report July 1988
The fuzzball has been re-born as truechimer.cso.uiuc.edu at
192.17.174.40 providing time of day, standard time intervals
and other related NTP information. It ticks at stratum 2
until mid-August when the Spectracom 8170 WWVB clock will be
installed.
by Paul Pomes (paul@uxc.cso.uiuc.edu)
JOHN VON NEUMANN NATIONAL SUPERCOMPUTER CENTER
The JVNCNet monthly report has been reduced in size to comply
with requests from some readers. The full report (about 12
pages long) can be obtained from the JVNCnet NIC.
Monthly Status Overview:
* The overall uptime for the gateways (33 gateways) and
links (T1s, 6kbps and satellite) this month was 91.68%
(worst case, this number considers that all gateways are
unreachable when JVNCA is down the measured uptime when
JVNCA was available (97.2% of the time) was for an
average on all the gateways 94.76% available. This
represents a lower uptime than last month (96% over this
months'91.68%). This increase in down time was primarily
due to a number of routing loops and electric storms that
caused interruption of the services at JVNC.
* Traffic on the JVNCA gateway has been slightly higher
this month than last month, with a total number of
packets in and out (of ONE of its ethernet interfaces) of
125,248,680 packets. Plans are moving ahead for the
connection of the JANET (Joint Academic Network) in the
UK to the NSFNet at JVNC.
* Our "new" NSFNet node is up and running. The NSS is on
an ethernet segment connected to two CISCO routers on the
JVNC internal network. These routers are exchanging EGP
information with the NSS and the PSN, and provide to be
the most intelligent routers on our system.
* Number of networks being announced from the JVNC-arpa
gateway: with egpmetric 0 = 15; and with egpmetric of 3 =
18.
Westine [Page 10]
Internet Monthly Report July 1988
JVNCnet Network Topology
------------------------
Boston U.---Harvard---MIT---Brown---Wesleyan
| | |
Dartmouth--Northeastern | Yale
| | |
Umass (Amherst) | |
| | |
============ |
---------------|| ||-------------
|| ||
IAS---------------------|| ||------------U. of Penn
Montclair State---------|| JVNC ||------------Penn State
NYU---------------------|| ||------------U. of Colorado
Columbia----------------|| ||------------Princeton
U. of Arizona-----------|| ||------------Rutgers
Rochester---------------|| ||------------NJIT--Stevens
============ |--------UMDNJ
For more information contact:
Network Operations:
phone: (609) 520-2000
e-mail: JVNCnet-noc@jvnca.csc.org
hours: Primary: 9am-5pm Monday to Friday
Secondary: 5pm-9am Monday to Friday,
24hrs, weekends and holidays
Network Informations:
phone: (609) 520-2000
e-mail: JVNCnet-nic@jvnca.csc.org
hours: 9am-5pm Monday to Friday
by Sergio Heker (heker@jvnca.csc.org)
NATIONAL CENTER FOR ATMOSPHERIC RESEARCH AND UNIVERSITY SATELLITE
NETWORK PROJECT
USAN now connects to the Internet via the NSS and most routing on
USAN is now dynamic, with RIP the IGP. The WESTNET-EAST cisco
gateway that is on the USAN backbone EGP peers with the NSS, and
windom, a Sun 3/280 with only one ethernet interface, serves as a
gated agent peering with the NSS for the USAN AS.
Westine [Page 11]
Internet Monthly Report July 1988
The fuzzball has been disconnected from the serial lines but still
is in operation as a timeserver for WWVB clock information. Some
problems still exist in exchanging routing information with the
fuzzball and windom so not all sites can yet reference the clock
by Don Morris, morris@windom.ucar.edu
PITTSBURGH SUPERCOMPUTING CENTER
I am the new gateway/IP network engineer at PSC. I will be working
with Gene Hastings and Dave O'leary installing and maintaining
PSC's IP network facilities. Since we have missed the last several
reports, and this is my first, this report reflects changes back to
an indefinite beginning.
Our machine room has been completely overhauled. The NSFnet NSS
required additional floor space, air conditioning and power beyond
that already available. We took the opportunity to completely
recable the machine room as well.
Our routing stub was converted from subnet 1 of 128.182 to class C
network 192.5.146. The machines of interest are:
psc-gw1.psc.edu (192.5.146.1) microvax gated agent with:
PSN14 (10.4.0.14) and PREPnet (129.250)
psc-gw2 (192.5.146.2) microvax gated agent with (FUTURE):
T1 to SURANET and 2nd Arpanet connection.
psc-gw3 (192.5.146.3) microvax gated agent with:
Carnegie Mellon (128.2) and the NSS egp peer.
mi-rtr (192.5.146.6) Our "internal" Proteon with remote
links to: SURANET (slated to be moved to psc-gw2)
UPghRTR (192.5.146.7) Proteon 4200 connecting to
Univ. of Pittsburgh.
fuzzball (192.5.146.42) Keeping time at a new address.
NSS-5 (192.5.146.254)
PREPnet is the new Pennsylvania regional network. It came online
mid June, connecting PSC, University of Pittsburgh, Carnegie Mellon
University, University of Pennsylvania, Drexel, Temple, and Lehigh.
We also installed "virgin" Mt Xinu on our 3 microvax gated
gateways. One of our design goals was to make the gateways as
symmetric as possible: except for 4 files they are identical. Our
arpanet gateway has been having moderate stability problems, panics
with "mbuf map full". It seems to be related to the large routing
tables rather than the acc driver. There have been a few reboots
on the other gateways attributed to the same problem.
Westine [Page 12]
Internet Monthly Report July 1988
During June The CMU/TEK TCP/IP on the VAX/VMS front ends to the
Cray XMP became unusable. We have not determined if this was due
to upgrading the front ends from VAX 8650's to 8810's or due to
changes in the backbone. As a work around, we are using DECnet-
ULTRIX DECnet-Internet Gateway software running on some microvax
II's to convert TCP/IP services to DECnet. We are also testing
Wollongong, SRI MultiNet, and other TCP/IP implementations for the
front ends. Both SRI and Wollongong have passed our initial
robustness tests. Testing with real users is scheduled to begin
later this week. Some of the other products are still under
consideration.
Our direct T1 to SURANET net will be moved from our internal
Proteon to its own dedicated routing stub with a gated agent. This
change has been imminent, but keeps getting snagged on various
problems. This connection provides backup for a large class of
NSS/local routing stub failures and carries direct traffic to some
of our heaviest users.
When we resolve the gateway stability problem we plan to act as an
additional NSF/ARPA net gateway.
by Matt Mathis (mathis@faraday.ece.cmu.edu)
SAN DIEGO SUPERCOMPUTER CENTER
NSFnet II is operational at SDSC. All traffic that was routing
through our fuzzball is now flowing over the Merit/MCI/IBM system.
Our Fuzzball was turned off for about a week - it has now been
resuscitated to act as a clock for Dave Mills.
Our ARPAnet PSN has a second operational trunk. We now have trunk
links to ISI and UCLA.
OPUS, our SUN 3/50 running gated, is now almost out of the packet
forwarding game. Only a couple of minor systems still route their
packets through it. Our p4200 (and our VAX's) peer with OPUS via
EGP to collect NSFnet routing information. Thus our p4200
connected nets get direct service from the p4200 to the NSFnet NSS.
Our Proteon p4200 is now connected to (just) U Hawaii, UC Santa
Barbara, UC San Diego and the Salk Inst.
We are expecting a cisco systems router in the next 2 weeks. It
will be used as an evaluation unit for CERFnet's routers.
by Paul Love (loveep@sds.sdsc.edu)
Westine [Page 13]
Internet Monthly Report July 1988
BARRNET
No report received.
CERFNET (California Education and Research Fed. Network - Initial
Status Report)
The California Education and Research Federation (CERF) has
submitted a proposal to the National Science Foundation to
establish a regional network in California. This network, CERFnet,
will be established to enhance both supercomputer access and the
environment for academic computing in the region. CERFnet will
have a mesh architecture with a high speed backbone through the
most heavily used paths. There is a mixture of 56 kilobit, 512
kilobit, and 1.544 megabit lines. The initial members are listed
below. (All lines are T1 unless otherwise indicated).
-The academic institutions actively participating are:
The Agouron Institute
California Institute of Technology
The California State University system including (all 56k):
Chancellor's Office
California State University campuses at:
- Bakersfield - Los Angeles
- Chico - Northridge
- Dominguez Hills - Sacramento
- Fresno - San Bernardino
- Fullerton - San Francisco
- Hayward - San Jose
- Humboldt - Sonoma
- Long Beach - Stanislaus
San Diego State University
The California Polytechnic State Univ. campuses at:
- Pomona - San Luis Obispo
Information Sciences Institute
Occidental College (56k)
Research Institute of Scripps Clinic
Salk Institute of Biological Studies
San Diego Supercomputer Center
University of California
Office of the President
University of California campuses at:
- Irvine - San Diego
- Los Angeles - Santa Barbara (512k)
- Riverside (56k)
Westine [Page 14]
Internet Monthly Report July 1988
University of San Diego (56k)
University of Southern California
-The industries actively participating are:
Northrop Research and Technology Center
Science Applications International Corporation (56k)
There are a couple of interesting features of CERFnet. First, some
members of CERFnet are also members of Los Nettos. Los Nettos is a
regional network locaLos Angeles. An important feature of Los
Nettos is that the circuits and gateway systems be high speed to
encourage research that requires high bandwidths. Currently, all
connections are expected to be at least 1.544 megabit capacity.
Los Nettos will be a member of CERF in its own right, in addition
to individual institution memberships.
Second, the California State University system has an existing
state-wide X.25 network. This will be upgraded in its internal
bandwidth and a TCP/IP gateway added at each campus. This will
provide each campus in the system with full TCP/IP service.
Third, CERF has asked NSF to provide a separate dedicated link into
the NSFnet backbone at ISI. This link is proposed to have equal
capacity to those of the other directly connected regionals. This
link has been requested because of the large amount of backbone
that is anticipated from the Los Angeles Basin institutions.
(Additionally, the CSU X.25 network will interconnect at ISI.)
At this time, there are several devices that CERFnet is evaluating
for the gateway/routers. Because there are so many variations in
the network, it may be possible that more than one vendor's devices
will be used in the network. At this time, cisco Systems is the
only company that can provide the diversity of hardware that will
be required in CERFnet and provides a superior, although
proprietary, routing protocol.
In order to facilitate CERFnet's access to the ARPAnet, an
additional DDN X.25 card will be installed in a cisco gateway.
Initially this will be at the San Diego Supercomputer Center,
enabling a simple connection to the existing ARPAnet Packet
Switching Node located at SDSC. It may be moved to ISI at a latter
date or a second card installed there.
A test network using the cisco X.25 & DDN/X.25 capabilities went up
during the month of August between the California State University
Chancellor's Office, Cal Poly San Luis Obispo, Cal State Fresno,
Cal State Northridge and the San Diego Supercomputer Center. It
will be extended to Los Nettos when possible.
Westine [Page 15]
Internet Monthly Report July 1988
by Susan Estrada (estradas@luac.sdsc.edu)
MERIT/UMNET
The IP gateway box for the MTS mainframe operating system, of which
several are attached to Merit, is in provisional release to users
and is proving fairly reliable.
MIDNET
No report received.
MRNET
No report received.
NORTHWESTNET
Our connection to the new NSFnet backbone is now in production and
working quite reliably. Users have experienced substantially
improved service, except in access to the ARPANET.
The University of British Columbia is now online connected through
a NorthWestNet router to the UW campus network, and from there to
NSFnet.
by JQ Johnson (jqj@hogg.cc.uoregon.edu)
Westine [Page 16]
Internet Monthly Report July 1988
NYSERNET
Clarkson Albany
| |
| |
| |
Rochester ========== Cornell ======= Syracuse ====== Rensselaer
|| || / ||
|| || / ||
|| || / ||
|| || NyserNet ||
|| ..... Oswego || NISC ||
Buffalo ... Alfred || ||
| || ||
| || ||
| || ||
| || ||
| || ||
| Stonybrook ____ Columbia ====================== N Y U ===:\
| / | | __/ | ||
| Brookhaven ____/ / | ___/ | ||
| / | / | ||
| AOA === NYNEX S+T NSMAC _____ C U N Y _______ Poly ||
| || | \ ||
| || | \ ||
| || | \ ||
| Compass -------- Garden City | \_____ Rockefeller......SKF
| | ||
| | ||
| | ||
Binghamton _______________________________| White Plains CO
_________________________________________________________
| |
| KEY: |
| |
| Line Speed Representated as: |
| ------------------ ----------------------------------- |
| NYTel RCI Kbps line type examples Planned |
| --- --- ------ --------- -------------- ------- |
| |
| T1 DS1 1,540 double || = // \\ ~ |
| |
| DDS DS0 56 single | _ / \ |
| |
| (sub-rate) 9.6 dots : . , ` |
|_________________________________________________________|
Westine [Page 17]
Internet Monthly Report July 1988
JULY EVENTS:
- EGP peering and traffic flow with the new NSFNet
- release of the 2.2 version of NYSERNet's SGMP
- installation of NYSERNet's ARPANET gateway
- release of the 3.0alpha version of NYSERNet's SNMP
- completion of the ANSI Z39.50-1988 ASN.1 encoder/decoder
- addition of a new member: SmithKleinFrench
by Martin Lee Schoffstall (schoff@nisc.nyser.net)
No report received.
OARNET
No report received.
SESQUINET
No report received.
SURANET
The following SURAnet sites are presently on-line:
University of Alabama at Birmingham
Alabama Supercomputer Network
University of Alabama at Tuscaloosa
Catholic University of America
Clemson University
Continuous Electron Beam Accelerator Facility
University of Delaware
Department of Energy/Oak Ridge Operations Office
University of Florida
Florida State University
Fox Chase Cancer Center
Emory University
Gallaudet University
George Mason University
Georgetown University
George Washington University
Georgia Institute of Technology
University of Georgia
Johns Hopkins University
University of Kentucky
Louisiana State University
University of Maryland
NASA/Goddard
National Bureau Of Standards
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National Cancer Institute/Frederick Cancer Research Center
National Institute of Environmental Health Sciences
National Institutes of Health
National Radio Astronomy Observatory
National Science Foundation
Naval Research Laboratory
Oak Ridge National Laboratory
Old Dominion University
Supercomputer Research Center (IDA)
University of Tennessee
Triangle Universities Computation Center
Duke University
North Carolina State University
University of North Carolina
Vanderbilt University
Virginia Commonwealth University
US Geological Survey
University of Virginia
Virginia Polytechnic Institute
University of West Virginia
College of William & Mary
It is anticipated that Mississippi State University will be added
to the Network within several days.
The following networks are being advertised from SURAnet
to the NSFnet:
128.4 DCN 128.173 VaTech 192.5.39 UDEL
128.8 UMD 128.175 UDEL 192.5.45 FCCC
128.60 NRL 128.186 FSU 192.5.57 UDEL-CC
128.61 GeoTech 128.192 UGA 192.5.214 DEC
128.82 ODU 128.220 JHU 192.5.82 FSU
128.109 TUCC 128.227 UFL 192.5.215 GMU
128.140 Emory 128.239 Wm & Mary 192.5.219 Clemson
128.143 Virginia 129.6 NBS 192.16.75 Georgetown
128.150 NSF 129.57 CEBAF 192.16.176 LSU
128.163 UKY 129.59 Vanderbilt 192.26.10 Gallaudet
128.164 GWU 129.66 UAB 192.31.192 IDA/SRC
128.167 SURA 129.71 WV net 192.31.193 Catholic
128.169 TENN 129.143 NCIFCRC 192.33.115 NRAO
128.172 VCU 130.39 LSU 192.41.177 SURA
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SURAnet is presently using GATED to exchange routing information
with the NSFnet backbone. We have obtained an early release of the
Proteon p4200 gateway software Version 8.1. When this is running
GATED will not be required. We plan to test Version 8.1 within the
next few days.
by Jack Hahn (hahn@umdc.umd.edu)
WESTNET
1. Both Westnet "East" and Westnet "West" have been routing
traffic across the new NSFnet T-1 Backbone, and have observed
a marked improvement in performance, compared to the old 56
kbps backbone.
2. A meeting of the Westnet Steering Committee was held in Denver
on 7 July 1988. A variety of topics were covered, with the
greatest time being spent on the establishment of a proper NIC
and NOC for Westnet. It was announced that Ms. Carol Ward will
be assuming a full-time position under the direction of David
Wood at the University of Colorado at Boulder to perform NIC
and NOC functions, and provide other technical support for
Westnet.
3. The 56 kbps circuit between the cisco Gateways at NCAR and the
University of Colorado at Boulder, experiencing significant
congestion during the day, was ordered to be upgraded to T-1
in early August.
4. Pat Burns, the PI of Westnet, is now on sabbatical until July
31, 1989. He is still continuing to function in his Westnet
capacity as part of his formal duties during his sabbatical.
He can be contacted until
August 1 1989 at:
Pat Burns
Supercomputing Research Center
4380 Forbes Blvd.
Lanham, MD 20706
e-mail: pburns@super.org
phone: 301/731-4910
by Pat Burns (pburns@super.org)
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TASK FORCE REPORTS
------------------
APPLICATIONS -- USER INTERFACE
User Interface Task Force: Summary of June 1988 Meeting
The task force met June 22-23 at Olivetti Research Center in
Menlo Park. The major topics of discussion were group work,
user interface architecture, video, and real-time requirements
of voice and video. The resulting highlights were:
- Andy Schulert of On Technology (and formerly principal
architect of Open Dialogue at Apollo) added his support to
the argument that, in the world of "network computing",
"user interface toolkits" would be better placed on the same
machine with the window server. This effectively means
encapsulating them in a separate server (as is being doing
at Olivetti, for example) or in the window server itself (as
several groups are doing with NeWS). The principal
motivation is the same as that for NeWS and Stanford's VGTS
before it, namely, to reduce network traffic. A possible
side effect is that it may even be possible for the client-
server protocol to be strictly synchronous without employing
batching or pipelining, as used by X of the VGTS, for
example. On the other hand, this eliminates the parallelism
that can be achieved by using several workstations. Indeed,
experience with the V-System at Stanford and with NeWS
suggests that users can often get better response by moving
even very low level processing onto remote workstations. In
short, the jury is still out.
- Greg Foster of Xerox PARC noted that the Colab group is
moving away from "electronic meeting rooms" per se to the
more general concept of "shared workspaces". The idea is to
provide support for the sorts of serendipitous meetings that
occur throughout the day---in the lounge, by the coffee pot,
and in people's offices---rather than require people to pick
up all their notes and move to a dedicated room to have a
meeting. (Phil Gust of HP Labs later added another view of
this: "seamless migration from one locale to another.")
Moreover, much to the delight of the editor, Greg offered
that the Colab room itself is used primarily for communal
access to existing applications (as displayed on the 8'
rear-projection screen). While this does not mean that
special-purpose "groupware" is useless---indeed, the idea
generator Cognoter appears to be used regularly by several
different groups---it lends yet more support on the argument
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that there is much to be gained by providing multi-user
access to existing tools.
- To summarize the discussion of real-time issues:
Reasonable-quality voice requires 8000 bytes/sec throughput
(note that this is "voice", not high-fidelity audio).
Unfortunately, on generic (UNIX-based) workstations, it is
not reasonable to generate an interrupt on every byte
(sample); rather, it is necessary to provide on-board
packetization (or employ multiple processors). As many
companies have discovered, most UNIX-based systems are also
incapable of delivering the necessary response to storage
and retrieval requests; the level of response determines the
amount of buffering that is required in the audio server.
As for video, T1- (also CDI-) quality implies 200 Kbytes/sec
throughput. As with voice, this presents no problem
bandwidth-wise, but rather with regard to response (to
request to store or retrieve individual frames). However,
true broadcast TV requires roughly 60 Mb/s and studio
quality requires 140 Mb/s bandwidth, either of which present
significant problems for UNIX.
- Also with respect to video, Steve Casner reported on the
Video Working Group Meeting held May 10 at the MIT Media
Lab. The focus of the meeting was on "video in
workstations" -- what's the state of the art, and how will
it be used. It's too early to define the taxonomy of uses
for video (and advantages over other media). Participants
in the meeting are working individually on video display in
a window on the workstation, video bandwidth compression,
transmission across packet LANs and WANs, and integration of
video with other media. However, no group has yet brought
all these pieces together to form, for example, a multimedia
workstation conferencing system.
For video to be used as other media are now, there is a
strong need for authoring tools. People have grown
accustomed to high-quality production in video, making the
task even more difficult. The need is equally strong for
reading tools; structured multimedia documents will have
dual control, both by the author defining how the pieces
form the whole and by the reader selecting the parts of
interest (e.g., text to explain an event in the video or a
video segment to illustrate an example in text). Full
minutes of the meeting will be posted to UI-INTEREST.
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- As for voice server work, projects continue at the Sun New
Media Workstation Group to create a full-function PC-based
server using the TI speech board and at Olivetti Research
Center on a software "audio server" that does for audio what
window servers do for graphics (and then some---e.g.
computer-controlled mixing and routing). The design
specification on the latter will be available shortly.
Complete minutes will be posted to UI-INTEREST momentarily.
The next meeting will be September 12-13 at ANSA Headquarters
in Cambridge, England.
Keith Lantz (LANTZ@ORC.OLIVETTI.COM)
AUTONOMOUS NETWORKS
The Autonomous Networks Task Force held a two-day three-way
video conference July 7-8 !!! The three sites were ISI in
L.A., BBN in Cambridge, and DARPA in Washington D.C.
The meeting began with a report on Barry Leiner's June
workshop (Leiner brought together government agency
representatives from the FRICC and members of the technical
community to discuss policy drivers for new internet protocol
mechanisms.) We analyzed the draft policy statements
articulated at the Leiner workshop and determined that there
was much more work to be done to produce statements of policy
that could be used to drive the design and selection of
appropriate technical mechanisms. This turned into one of the
three action items that members of the task force will pursue
during the next few months. In particular, we are drafting a
set of detailed questions that must be addressed in every
autonomous region's policy statement(s). With these questions
in hand we plan to meet individually with members of the
FRICC to elicit their policy requirements for usage and
interconnect of research network facilities.
With the discussions of policy requirements as context we
switched our focus to the discussion of several proposed,
policy routing mechanisms; in particular, we heard
presentations on several schemes developed by members of the
IETF Open Routing Group (Nakasis, Callon,
Ciappa/Gardner/Zhang), Paul Tsuchiya's Landmark Routing, and
Dave Clark's Policy Routing proposal. We found it difficult to
1) evaluate each scheme in terms of its ability to support
interconnected autonomous networks, and 2) to compare the
schemes to one another. In order to facilitate the first point
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we began generating a list of generic scenarios/cases that a
rich policy routing mechanism should be able to support. A
second activity of ANTF members during this work period will
be to consolidate/expand/refine the list. To facilitate the
comparison of alternative schemes we generated a third action
item: to coordinate the preparation of brief summaries of each
of the proposed schemes and attempt to make the terminology
used more uniform.
Our next meeting will be held sometime before the end of the
year to discuss all three items mentioned above: refined
policy statements, list of generic test cases, and summaries
of proposed mechanisms.
A note on the medium: I think we were all somewhat surprised
at how successful the three-way video conferencing medium was!
Personally, I want to thank the support personnel from BBN and
ISI for their very successful efforts on our behalf. I hope
that we will have the opportunity to use this medium on a
regular basis. If any of the other task forces or working
groups are planning a three-way meeting of this sort I would
be happy to offer my two cents of advice on what I found was
helpful in the conduct of the meeting (or would have been had
a realized it earlier).
Deborah Estrin (Estrin@OBERON.USC.EDU)
END-TO-END SERVICES
At its July meeting, the IAB created a formal step in the
process of defining a new Internet protocol standard: a "Draft
Internet Standard". This is a proposal that has undergone
extensive review and is expected to become a standard, but
requires some period of widespread experimentation before full
standardhood is granted. The Draft Internet Standard category
and the ISO DIS category are analogous.
In a separate action, the IAB agreed to designate the IP Host
Group Multicasting specification as described in RFC-1054 as a
Draft Internet Standard.
Bob Braden (Braden@ISI.EDU)
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INTERNET ARCHITECTURE
The task force will be sponsoring an Internet research
workshop in conjunction with the IAB meeting in January. The
workshop will include invited presentations by research
contributors from throughout the Internet community and
especially the IAB and its task forces.
Dave Mills (Mills@HUEY.UDEL.EDU)
INTERNET ENGINEERING
I was gently pinged (actually more of a `ding', as in a ball-
peen hammer rapped lightly against a heavy metal gong) that my
June submission to the Internet Monthly Report was incomplete.
I should have been more careful to mention that status and
technical reports were made on both the new NSFnet and
Arpanet. Hans-Werner Braun (U Mich) gave a report on the
deployment status of the NSFnet and Jacob Rekhter (IBM)
presented routing details. Marianne Lepp and Mike Brescia
(both from BBN) presented status and performance information
on the Arpanet and Internet. Marianne discussed the plans for
evolving Arpanet into DRI. I also neglected to mention that
Dave Mills (U Del) gave a very timely report on NTP. Mike
Kramer and Eddie Singh (both from NYNEX) reported on efforts
to develop and commercially offer a metropolitan-area-network
technology. Although these were all listed in the final
agenda, I neglected to specifically mention them in my summary
of "major points". My apologies for the oversight.
I've heard it said that three words often get reporters into
trouble--"can't", "always" and "never". They soon learn to
use mushier replacements like "might not", "often" and
"seldom". In the same vein, the wording in my report ("THE
major points were...") could be construed to imply that those
things that I negligently forgot to mention were not
"important" in their own right. This is not true, of course,
since there is not enough room on a crowded IETF agenda to
schedule "unimportant" issues. However, just to be safe in
the future, I'll retreat to a more benign phrase like "SOME of
the important points that I currently have time to summarize
include..."!
Phill Gross (Gross@GATEWAY.MITRE.ORG)
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INTERNET MANAGEMENT
No report received.
PRIVACY
During July, minutes from the 15-16 June Privacy Task Force
meeting at DEC in Littleton, MA were distributed to the task
force membership, as well as to Jim Bidzos and Ron Rivest of
RSA Data Security, Inc. An appendix to the minutes contained
a revised draft of one section of the key management RFC
currently in preparation, proposing a definition for
certificate contents.
Dave Solo of Sparta joined the Task Force.
John Linn (Linn@CCY.BBN.COM)
ROBUSTNESS AND SURVIVABILITY
No report received.
SCIENTIFIC COMPUTING
No report received.