Browse Prior Art Database

NCP survey (RFC0460)

IP.com Disclosure Number: IPCOM000005905D
Original Publication Date: 1973-Feb-13
Included in the Prior Art Database: 2001-Nov-15
Document File: 8 page(s) / 10K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

C. Kline: AUTHOR

Abstract

1 This RFC is the first in a series which will request information on implementation of host to host protocol. We would appreciate a reply to this RFC from all sites within two weeks. One convenient way to reply is to make a copy of this RFC at the NIC and insert the replies at the appropriate spots. The results of this survey will be published. Please send replies to nic ident CSK or to

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 38% of the total text.

Network Working Group                                 Chuck S. Kline CSK

Request for Comments: 460                                           UCLA

NIC 14415                                                 13 February 73

                               NCP Survey

   1 This RFC is the first in a series which will request information on

   implementation of host to host protocol.  We would appreciate a reply

   to this RFC from all sites within two weeks.  One convenient way to

   reply is to make a copy of this RFC at the NIC and insert the replies

   at the appropriate spots.  The results of this survey will be

   published.  Please send replies to nic ident CSK or to

   Charles Kline

   Boelter Hall 3804

   UCLA

   405 Hilgard Ave.

   Los Angeles, Cal. 90034

   2 This particular RFC will deal with implementations of Network

   Control Programs (NCPs).  Future RFCs will deal with .

   implementations of Telnet, RJE, etc.

   3 In order to ask questions about NCPs and get meaningful replies, I

   will here describe what I consider to be my concept of an NCP.

      3a An NCP is that part of the system which performs the tasks

      necessary for host to host protocol as specified by document NIC

      7104 (protocols notebook).

      3b NCPs contain the following parts (though not necessarily as

      separate pieces):

         3b1 Code which handles connection establishment including

         maintenance of the rendezvous table (table of open and pending

         connections).

         3b2 Code which handles transmission over open connections

         including buffer management and the sending of allocate and

         giveback commands.

         3b3 Code which handles the actual movement of messages in and

         out of the Imp (sometimes called the Imp handler and sometimes

         in a separate cpu).

         3b4 Other code including measurements, initialization, etc.

Kline                                                           [Page 1]

RFC 460                        NCP Survey                  February 1973

   4. Please answer the following questions.  It is probably appropriate

   to give this survey to the coder of the NCP or other knowledgeable

   person.  Write na (not applicable) where it is appropriate.  Circle

   the number of the appropriate choice when a choice is required.

   Thank you.

   5 General Information

      5a Host Name: ----

      5b Site Number: ----

      5c Your name ----

      5d Main cpu is a ---- (360/75, PDP-10, B6700, etc.)

      5e Operating system in main cpu is ---- (tenex, os/360, etc.)

      5f Is documentation available on your NCP?

         5f1 user level (how to use NCP)

         5f2 system level (implementation)

         5f3 Is the documentation available at the NIC?

   6 Imp interface

      6a built:

         6a1 in house

         6a2 contracted to ----

      6b full or half duplex?

      6c maximum bandwidth is ---- baud in each direction

   7 Coding of NCP

      7a ncp was written:

         7a1 in house

            7a1a written in ---- man-months

            7a1b Name of person who wrote NCP ----

Kline                                                           [Page 2]

RFC 460                        NCP Survey                  February 1973

            7a1c debugged in ---- man-weeks

            7a1d machine hours used in development and debugging of NCP

            ----

         7a2 contracted to ----

            7a2a contractor took ---- man-months

         7a3 supplied another site without modification by this site

         (specify site where NCP obtained from ------).

         7a4 supplied from another site but modified by this site for

         different system or for other reasons (specify site where NCP

         obtained from ------)

            7a4a modifications took ---- m...