blank.gif (43 bytes)

Church Of The
Swimming Elephant

Session Management Connected: An Internet Encyclopedia
Session Management

Up: Connected: An Internet Encyclopedia
Up: Topics
Up: Functions
Prev: SSL Protocol Overview
Next: RPC Protocol Overview

Session Management

Session Management

The network-layer protocols of the Internet are fundamentally datagram-oriented and unreliable. It is the responsibility of the Transport and Session layer protocols to enhance the quality of service to that desired by a particular application. In Internet terminology, these are the protocols of the Host-to-Host Layer, but I think Session Management better describes their role. These protocols function as an intermediary between the application and network layers.

Currently, there are three major Internet session management protocols:

  • UDP (User Datagram Protocol) provides almost no additional functionality over IP. It performs fast, unreliable, datagram delivery. UDP is the Internet's version of the no-look pass.

  • TCP (Transmission Control Protocol) provides reliable, stream-oriented delivery for applications such as file transfers and remote logins. TCP is a sliding-window protocol that takes steps to insure reliable data transfer, resending if needed due to network overloads or malfunctions. TCP, one of the most important Internet protocols, is also one of the most complex. Although it often works well unattended, a good understanding of TCP is essential for diagnosing performance problems.

  • RPC (Remote Procedure Call) is designed for programs to make subroutine calls on other systems. Essentially a request-reply protocol, RPC usually makes heavy use of UDP datagrams, adding its own facilities for insuring data transfer. RPC implementations generally do not yield TCP-quality performance, so its use is mostly limited to local area networks. Its most important application is the file sharing via the NFS protocol.

Next: RPC Protocol Overview

Connected: An Internet Encyclopedia
Session Management


Protect yourself from cyberstalkers, identity thieves, and those who would snoop on you.
Stop spam from invading your inbox without losing the mail you want. We give you more control over your e-mail than any other service.
Block popups, ads, and malicious scripts while you surf the net through our anonymous proxies.
Participate in Usenet, host your web files, easily send anonymous messages, and more, much more.
All private, all encrypted, all secure, all in an easy to use service, and all for only $5.95 a month!

Service Details

Have you gone to church today?
All pages ©1999, 2000, 2001, 2002, 2003 Church of the Swimming Elephant unless otherwise stated
Church of the Swimming Elephant©1999, 2000, 2001, 2002, 2003 is a wholly owned subsidiary of Packetderm, LLC.

Packetderm, LLC
210 Park Ave #308
Worcester, MA 01609