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IBM System z10 Open Systems Adapter Ethernet data router

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12 Author(s)
H. M. Haynie ; IBM Systems and Technology Group, 2455 South Road, Poughkeepsie, New York 12601, USA ; J. M. Turner ; J. C. Hanscom ; M. Cadigan
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The IBM Open Systems Adapter (OSA) is a family of integrated hardware features that enables direct connection between IBM System z10™ hosts and clients on local area networks (LANs). The OSA provides a virtual interface to the LAN that may be shared by hundreds of host operating systems. The newest OSA generation employs a hardware-based Ethernet virtualization offload engine to significantly increase throughput and reduce latency in line with the latest 1-Gb and 10-Gb Ethernet adapters. The router is embodied in the OSA Ethernet data router ASIC (application-specific integrated circuit) chipset and is packaged in several configurations. This paper describes the function of the OSA Ethernet data router, its hardware architecture, and the implementation of the design.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Journal of Research and Development  (Volume:53 ,  Issue: 1 )