I-D ACTION:draft-ietf-rolc-apr-01.txt

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A Revised Internet-Draft is available from the on-line Internet-Drafts 
directories. This draft is a work item of the Routing over Large Clouds 
Working Group of the IETF.                                                 

       Title     : Address Prefix Region and its application to Switched 
                   Data Link Subnetworks                                   
       Author(s) : Y. Rekhter, D. Kandlur
       Filename  : draft-ietf-rolc-apr-01.txt
       Pages     : 10
       Date      : 11/06/1995

The IP architecture assumes that each Data Link subnetwork is labeled with 
a single IP subnet number. A pair of hosts with the same subnet number 
communicate directly  (with no routers); a pair of hosts with different 
subnet numbers always communicate through one or more routers. As indicated
in RFC1620, these assumptions may be too restrictive for large data 
networks, and specifically for networks based on switched virtual circuit 
(SVC) based technologies (e.g. ATM, Frame Relay, X.25), as these 
assumptions impose constraints on communication among hosts and routers 
through a network, which in turn may preclude full utilization of the 
capabilities provided by the underlying SVC-based Data Link subnetwork.  
This document describes extensions to the IP architecture that relaxes 
these constraints, thus enabling the full utilization of the services 
provided by SVC-based Data Link subnetworks.                               

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