Browse Prior Art Database

Encapsulating IP with the Small Computer System Interface (RFC2143)

IP.com Disclosure Number: IPCOM000002699D
Original Publication Date: 1997-May-01
Included in the Prior Art Database: 2019-Feb-15
Document File: 5 page(s) / 7K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

B. Elliston: AUTHOR

Related Documents

10.17487/RFC2143: DOI

Abstract

This document outlines a protocol for connecting hosts running the TCP/IP protocol suite over a Small Computer System Interface (SCSI) bus. This memo defines an Experimental Protocol for the Internet community. This memo does not specify an Internet standard of any kind.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 32% of the total text.

Network Working Group B. Elliston Request for Comments: 2143 Compucat Research Category: Experimental May 1997

Encapsulating IP with the Small Computer System Interface

Status of this Memo

This memo defines an Experimental Protocol for the Internet community. This memo does not specify an Internet standard of any kind. Discussion and suggestions for improvement are requested. Distribution of this memo is unlimited.

Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . 1 2. Brief background to the Small Computer System Interface . 2 3. Link Encapsulation . . . . . . . . . . . . . . . . . . . . 3 4. An Address Resolution Protocol . . . . . . . . . . . . . . 4 5. Scalability . . . . . . . . . . . . . . . . . . . . . . . 4 6. Possible applications . . . . . . . . . . . . . . . . . . 5 7. Security considerations . . . . . . . . . . . . . . . . . 5 8. References . . . . . . . . . . . . . . . . . . . . . . . . 5 9. Author’s Address . . . . . . . . . . . . . . . . . . . . . 5

1. Introduction

As the capacity of local area networks increases to meet the demands of high volume application data, there is a class of network intensive problems which may be applied to small clusters of workstations with high bandwidth interconnection.

A general observation of networks is that the bit rate of the data path typically decreases as the distance between hosts increases. It is common to see regional networks connected at a rate of 64Kbps and office networks connected at 100Mbps, but the inverse is far less common.

The same is true of peripheral and memory interconnection. Memory close to a CPU’s core may run at speeds equivalent to a gigabit network. More importantly, devices such as disks may connect a number of metres away from its host at speeds well in excess of current local area network capacity.

Elliston Experimental [Page 1]

RFC 2143 Encapsulating IP with the SCSI May 1997

This document outlines a protocol for connecting hosts running the TCP/IP protocol suite over a Small Computer System Interface (SCSI) bus. Despite the limitation in the furthest distance between hosts, SCSI permits close clusters of workstations to communicate between each other at speeds approaching 360 megabits per second.

The proposed introduction of newer SCSI implementations such as serial SCSI will bring much faster communication at greater distances.

2. Background to the Small Computer System Interface (SCSI)

SCSI defines a physical and data link protocol for connecting peripherals to hosts. Devices connect autonomously to a bus and send synchronous or asynchronous messages to other devices.

Devices are identified by a numeric identifier (ID). For the original SCSI protocol, devices are given a user-selectable SCSI ID between 0 and 7. Wide SCSI specifies a range of SCSI IDs between 0 and 15. The most typical SCSI configuration comprises of a host adapter and one or more SCSI- capable peripherals responding to asynchronous messages from the host adapter....

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