Browse Prior Art Database

Front-end Protocol B6700 version (RFC0705) Disclosure Number: IPCOM000003751D
Original Publication Date: 1975-Nov-01
Included in the Prior Art Database: 2019-Feb-15
Document File: 39 page(s) / 48K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R.F. Bryan: AUTHOR

Related Documents

10.17487/RFC0705: DOI

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 6% of the total text.

Network Working Group Request for Comments: 705 NIC# 33644


2 September 1975

This is a working document which has been developed as the specification and guideline for design of a Burroughs B6700 attachment to an ARPA-Style network.

The approach is to utilize a front-end processor with a new protocol for network operation. That protocol, described herein, has been built upon the concepts expressed by M.A. Padlipsky, et al, in NIC# 31117, RFC# 647.

This proposed, site-specific, FEP implementation is the work of Gerald Bailey and Keith McCloghrie of NSA and of David Grothe of ACC. It has already sustained some corrections provided by MAP. It will be helpful if interested networkers will review and provide comments to us.

Comments to BRYAN@ISI.

Roland Bryan - ACC 1

Network Working Group Request for Comments: 705 Front-End Protocol: B6700 Version




This document describes the protocol to be used for connecting a general- purpose computer system (host) to an ARPANET-like network via a "front-end" computer. The main body of the document is aimed at a reader who is not conversant with all the details of network protocols. However, a paragraph marked with [n], refers a reader familiar with network protocols to the n-th item of Appendix A which will amplify that particular paragraph. Further information on the network protocols referred to in this document can be obtained from the Network Information Center.

Appendix B contains diagrams showing the transitions between the different connection states. Appendices C and D give the implementation details of this protocol in the Front-End and the Hosts.

This protocol is predicated upon the assumption that for each host, a line protocol, at a lower level, will be established between the device-driver modules in the Host and the Front-End, and that this line protocol provides Front-End Protocol with error-free transmissions.


A host computer may be connected to a network for a variety of reasons. Network connection may be an attempt to expand the usefulness of the Host to the community of users which it serves by making network resources available to them. Conversely, the services which the Host provides may be made available to a larger community of users, with the network providing the method of access to those services.

In order for members of a network community to communicate in an intelligent way, there must exist a set of protocols. The implementation of these protocols in a host computer is typically called the Network Control Program (NCP). The size and complexity of the NCP is proportional to the number and complexity of protocols which it implements. For an ARPANET like network, both the number and complexity are substantial.



RFC 705 Front-End Protocol


A host which directly connects into the network must assume the responsibility for implementing this set...