At 12:37 PM 10/29/00, Brian wrote:
>On Sun, 29 Oct 2000, Chuck Larrieu wrote:
>
> > Speaking of evil test creators, the one I've always wondered about is
> actual
> > T1/DS1 throughput. I believe serial lines are full duplex. So NOW what is
> > the REAL bit rate? ;->
>
>1.536Mbps is the actual usable bit rate of a clear channel t1. 8 bits is
>used for framing. Yes that is in each direction. But if a circuit has
>1Mbps incoming and 1Mbps outgoing, you still usually just call it a 1Mbps
>fdx, instead of 2Mbps........at least I do. I know some peole refer to
>100bT fdx as 200Mbps........but I think its more accurate to say 100Mb/s
>fdx.
>
>Brian
Brian, I completely agree. If you're at Server A and need to get to Server B
through a T1 wan link as seen below:
Server A---> Router A---->T1---->Router B---->Server B
your data can still only be sent at 1MB/sec. For those that would call it a
2MB/sec connection....What would you call the speed limit on a major
highway, is it
65mph or 130 mph? Traffic does flow at 65mph in each direction.... ;-)
Chuck's question prompts an even bigger question...What is real? LOL
AQ
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