Browse Prior Art Database

Enhancing TCP Over Satellite Channels using Standard Mechanisms (RFC2488)

IP.com Disclosure Number: IPCOM000003068D
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 15 page(s) / 45K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

M. Allman: AUTHOR [+3]

Abstract

The Transmission Control Protocol (TCP) provides reliable delivery of data across any network path, including network paths containing satellite channels. While TCP works over satellite channels there are several IETF standardized mechanisms that enable TCP to more effectively utilize the available capacity of the network path. This document outlines some of these TCP mitigations. At this time, all mitigations discussed in this document are IETF standards track mechanisms (or are compliant with IETF standards).

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

Network Working Group M. Allman

Request for Comments: 2488 NASA Lewis/Sterling Software

BCP: 28 D. Glover

Category: Best Current Practice NASA Lewis

L. Sanchez

BBN

January 1999

Enhancing TCP Over Satellite Channels

using Standard Mechanisms

Status of this Memo

This document specifies an Internet Best Current Practices for the

Internet Community, and requests discussion and suggestions for

improvements. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1999). All Rights Reserved.

Abstract

The Transmission Control Protocol (TCP) provides reliable delivery of

data across any network path, including network paths containing

satellite channels. While TCP works over satellite channels there

are several IETF standardized mechanisms that enable TCP to more

effectively utilize the available capacity of the network path. This

document outlines some of these TCP mitigations. At this time, all

mitigations discussed in this document are IETF standards track

mechanisms (or are compliant with IETF standards).

1. Introduction

Satellite channel characteristics may have an effect on the way

transport protocols, such as the Transmission Control Protocol (TCP)

[Pos81], behave. When protocols, such as TCP, perform poorly,

channel utilization is low. While the performance of a transport

protocol is important, it is not the only consideration when

constructing a network containing satellite links. For example, data

link protocol, application protocol, router buffer size, queueing

discipline and proxy location are some of the considerations that

must be taken into account. However, this document focuses on

improving TCP in the satellite environment and non-TCP considerations

are left for another document. Finally, there have been many

satellite mitigations proposed and studied by the research community.

While these mitigations may prove useful and safe for shared networks

in the future, this document only considers TCP mechanisms which are

currently well understood and on the IETF standards track (or are

compliant with IETF standards).

This document is divided up as follows: Section 2 provides a brief

outline of the characteristics of satellite networks. Section 3

outlines two non-TCP mechanisms that enable...