Browse Prior Art Database

Network activity report: UCSB Rand (RFC0113) Disclosure Number: IPCOM000001940D
Original Publication Date: 1971-Apr-05
Included in the Prior Art Database: 2000-Sep-12
Document File: 2 page(s) / 3K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

E. Harslem: AUTHOR [+2]



This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 84% of the total text.

Network Working Group 5 April 1971

Request for Comments: 113 E. F. Harslem

NIC 5820 J. F. Heafner

J. E. White



The UCSB Remote Job Entry (RJE) and Remote Job Out- put

Retrieval (RJOR) Systems described in NWG/RFC #105 have been used and

validated from Rand. The facility is now being used on a limited

basis as a production tool by another research group at Rand.

Access to the UCSB facility from Rand is through the Network

Service Program (NSP). This program is driven by Rand Video-Graphic

consoles and allows a console user access to both local file storage

(at Rand) and to the Network. A small module (UCSBMGR) was added to

NSP to handle the UCSB RJE and RJOR protocols and data formats.

In exercising the RJE/RJOR facility over the past two months,

typical job sizes included input decks of 800 to 2800 80-character

card images and output files of about 30 pages of printer linstings.


In sending files to UCSB we did a timing study over several

transmissions of the above mentioned 2800 record file. On the average

this file was transmitted at a rate of 250 80-character cards per

minute. (Each 80-character card was a separte Network message.) This

is, of course, much less than the advertised 30 kilobit rate; however,

it should be remembered that the path from Rand to UCSB is through at

least one intermediate IMP. On the other hand, the processes at each

end of the connection were running at maximum priority with very small

loads on either machine. An obvious area for speed-up would be the

blocking of card images for network transmission.

In the course of the last two months of networking, we have

noticed approximately five serious failures in transmitted messages.

In two instances, the RFNM on the control link from UCSB to Rand was

lost. Its loss was not reported via a type 9 IMP-to-Host message as

would be expected. We have not been able to cause the problem to

occur; hence we are unable to ascertain whether it is an IMP problem

or a problem with the UCSB Host Interface.

The other three errors were related to the garbling of a data

message between the Rand NSP and UCSB RJE. In all three instances, it

was the second card image trans- ferred to RJE. We were unable to

cause this problem at will; hence have been unable to track it down.

Unfortun- ately the HASP system at USCB merely ignored this image

rather than printing it so we are not aware of the nature nor source

of the garbling. It could be anywhere from the disk file st...