Site home page
(news and notices)

Get alerts when Linktionary is updated

Book updates and addendums

Get info about the Encyclopedia of Networking and Telecommunicatons, 3rd edition (2001)

Download the electronic version of the Encyclopedia of Networking, 2nd edition (1996). It's free!

Contribute to this site

Electronic licensing info



Integrated Services (Int-Serv)

Related Entries    Web Links    New/Updated Information

Search Linktionary (powered by FreeFind)

Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM.

Integrated Services, or Int-Serv, is a model for providing QoS on the Internet and intranets by using bandwidth reservation techniques. As originally designed, the Internet supports only best-effort delivery of data packets across multiaccess (shared) network links. There is little support for QoS (quality of service) due to the packet-oriented nature of the Internet and factors such as variable queuing delays and congestion losses.

The Int-Serv model defines methods for identifying traffic flows, which are streams of packets going to the same destination. An Internet voice call is an example. The Int-Serv concept reserves just the right amount of bandwidth to support the flow's requirements and protect it from disruptions caused by network congestion. Reservations are negotiated with each network device along a route to a destination. If each device has resources to support the flow, a reserved path is set up. RSVP (Resource Reservation Protocol) is the signaling protocol that sends messages in the forward direction to request reservations, and then sends messages in the reverse direction to set up the reservations if all devices in a route agree to reserve resources.

This topic continues in "The Encyclopedia of Networking and Telecommunications."

  • Comparison of IntServ to DiffServ (Differentiated Services)
  • Flow specifications and traffic/delay characteristics
  • Throughput requirements, delay sensitivity, and error tolerance
  • Integrated services architecture
  • Controlled-link sharing
  • Resource reservation
  • Admission control, packet schedulers and classifiers
  • RSVP (Resource Reservation Protocol)
  • QoS (quality of service) issues
  • RFC lists

Copyright (c) 2001 Tom Sheldon and Big Sur Multimedia.
All rights reserved under Pan American and International copyright conventions.