Cell Relay Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] Re: Pathchar problems evaluating switched networks
Mike <wsmtsports@home.com> writes: > Has anyone seen problems evaluating switched networks using Pathchar? > > Some of our networks use switched hubs that have both 100 and 10 Mb > ports. I would think that the if a node is on a 100 Mb port but access > to that node is from a 10 Mb port that the evaluated data rate would be > less than 10 Mb. Pathchar evaluated that link as being about 15Mb. > > I would appreciate comments, clues, or insights. > > ----------- > | | > 10 Mbits-----| Switch |------ 100 Mbits > | | > ----------- If your 10MBit link is full duplex you will see traffic throughput at a rate > than 10 megabits, but somewhat less than 20 megabits. Since most cards and switches these days are autosense, if your connection is right to the switch then this indeed would be the case. I've personally seen throughput on 10MBit full-duplex links approach 19Mbits/sec (18.666, to be exact). Hope this helps. Email me for more detail. Michael -- Michael Slavitch <slavitch@loran.com> http://www.loran.com/~slavitch "Being Canadian is like living next door to the Simpsons" - Molly Ivins |
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