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Notes on the Network Working Group meeting, Urbana, Illinois, February 17, 1971 (RFC0101) Disclosure Number: IPCOM000001813D
Original Publication Date: 1971-Feb-01
Included in the Prior Art Database: 2019-Feb-10
Document File: 14 page(s) / 21K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R.W. Watson: AUTHOR

Related Documents

10.17487/RFC0101: DOI

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 12% of the total text.

Network Working Group Richard W. Watson Request for Comments: 101 SRI-ARC NIC: 5762 February 23, 1971


Wednesday Evening, February 17

Mike Sher opened by welcoming the group to Urbana and briefly indicated that ILLIAC IV was expected to be running this summer. The ILLIAC IV Project has been split into two projects; one on basic system hardware and software, and the other on applications. Their IMP is not yet connected to their PDP-11.

Steve Crocker asked for topics to be discussed at this meeting; these are indicated below.

Peggy Karp of Mitre has been summarizing the old RFC’s. She has a list of about 30 topics and is summarizing their present status. She expects to finish around the end of February. See RFC #100, NIC(5761). It was suggested that someone write an RFC indicating which ones are obsolete. It was also suggested that the Network Information Center (NIC) help sites in organizing their hardcopy material.

There then followed brief discussions of experiences in using the Network. John Melvin (SRI-ARC) summarized SRI’s experience in using the Utah PDP-10 to help in SRI’s transfer from an XDS 940 to a PDP- 10. In April-May 1970 it was clear that SRI was headed toward a PDP-10 in order to have the capacity and reliability to fulfill their role as the Network Information Center. They had had some previous experience in connecting with Utah, and so it seemed logical to try to use the Utah 10 to aid the transfer.

In June use of the Network began. SRI uses higher level languages extensively, so the first task was to transfer the compiler- compiler Tree Meta. Source code was generated on the 940 to run on the PDP-10. Binaries were then transmitted to Utah and run and debugged. Patches were performed where possible, and source changes accumulated. A new source and binaries would then be made periodically.

Watson [Page 1]


Once Tree Meta was running, a new high level language (called L- 10) for programming the On-Line System (NLS) was implemented in the same way. When L-10 was running the core device independent parts of NLS were rewritten and debugged. NLS was completely reorganized during the transfer.

At the SRI and Utah ends a control program allowing three users to connect to Utah was written, which ran as a user process and allowed character interaction and files to be transmitted. The scheme worked well and much useful work was accomplished in the July--December period with some people on 4-5 hours per day. The voice link was used when something would go wrong in trying to determine where the problem existed and to reset. At times they would go 2 weeks with no problems. SRI has an IMP interface diagnostic which ran as a T/S process.

Generally, echoing was handled at the SRI end. DDT was used at Utah end. Round trip character delays of 4 seconds were not uncommon, and at certain points delays of 8 or 10 minutes were experienced. Thes...