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UltraNet Target ParametersThe UltraNet is a high speed network capable of rates up to one gigabit per second. It is a hub based network with four optical fiber links connecting each hub. Each link can carry up to 256 megabits of data, and the hub backplane is capable of one gigabit aggregate throughput. Host connections to the hub may be fiber, coax, or channel based. Bus based machines have adapter boards that connect to transceivers in the hub, while channel based machines use a personality module in the hub. One way that the UltraNet achieves its high transfer rates is by off-loading the protocol processing from the hosts to special purpose protocol engines in the UltraNet hubs. In addition, every hub has a PC connected to it by StarLAN for network management purposes. Although there is hub resident and PC resident UltraNet software, this document treats only the host resident UltraNet software.
Document ID
20010114147
Acquisition Source
Ames Research Center
Document Type
Reprint (Version printed in journal)
Authors
Kislitzin, Katherine T. (Computer Sciences Corp. Moffett Field, CA United States)
Blaylock, Bruce T.
Date Acquired
August 20, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Network Parameters
Subject Category
Computer Systems
Report/Patent Number
RND-92-002
Funding Number(s)
CONTRACT_GRANT: NAS2-12961
PROJECT: RTOP 536-01-50
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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