Simple Unified Networking

Document Type Expired Internet-Draft (individual)
Author Masataka Ohta 
Last updated 1997-03-26
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The concept of LIS for IP over ATM causes a topology mismatch between the link and the internetworking layer. While it introduces some inefficiency with CATENET based operation, it is not so much a problem unless we try to solve this minor problem. Short-cutting attempts such as NHRP can't solve the inefficiency issue at all even though, or, just because, it utterly destroys the CATENET model, which resulted in inelegant modifications of existing protocols, which, in turn, causes scalability problems. Moreover, the creation of short-cut VCs itself suffers a scalability issue. But, CSRs (Cell Switching Routers), or RSVP-signaled ATM switches, make it possible to have end-to-end cell-by-cell relaying over IP routers. That is, there is no reason to have LISes and there is no inefficiency The way to go for the Internet is Simple Unified Networking with the CATENET model.


Masataka Ohta (

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