Tag Switching Architecture - Overview

Document Type Expired Internet-Draft (individual)
Authors Dave Katz  , Dino Farinacci  , Bruce Davie  , George Swallow  , Yakov Rekhter  , Eric Rosen 
Last updated 1997-08-05
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document provides an overview of tag switching. Tag switching is a way to combine the label-swapping forwarding paradigm with network layer routing. This has several advantages. Tags can have a wide spectrum of forwarding granularities, so at one end of the spectrum a tag could be associated with a group of destinations, while at the other a tag could be associated with a single application flow. At the same time forwarding based on tag switching, due to its simplicity, is well suited to high performance forwarding. These factors facilitate the development of a routing system which is both functionally rich and scalable. Finally, tag switching simplifies integration of routers and ATM switches by employing common addressing, routing, and management procedures.


Dave Katz (dkatz@juniper.net)
Dino Farinacci (dino@cisco.com)
Bruce Davie (bsd@cisco.com)
George Swallow (swallow@cisco.com)
Yakov Rekhter (yakov@juniper.net)
Eric Rosen (erosen@cisco.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)