1. ## Network Speeds

Hi,

Can someone explain to me how networking/broadband speeds work. If suppose I have 2 machines connected via 100Mbit switch.

if I use dimensional analysis and the ratio 8bits/byte

100x10^6 bits * 1 byte/8 bits = 12500000 bytes/second

That's 12.2Mbytes/second

Is this calculation right. How does T1-T3 and others fit into this?

Also, do any of you know of any forums where they discuss networking hardware? routers/switches and stuff??

thanx

2. ## Re: Network Speeds

Hi,

Can someone explain to me how networking/broadband speeds work. If suppose I have 2 machines connected via 100Mbit switch.

if I use dimensional analysis and the ratio 8bits/byte

100x10^6 bits * 1 byte/8 bits = 12500000 bytes/second

That's 12.2Mbytes/second

Is this calculation right. How does T1-T3 and others fit into this?

Also, do any of you know of any forums where they discuss networking hardware? routers/switches and stuff??

thanx
Calculation is somewhat right, but don't expect anything like those speeds. Mostly you will see up to 10MB/s across a switch, especially using TCP/IP due to the overhead.

T1 is 1.4something megabit/s and a T3 is 27 T1's I do believe.

You might find such a forum at www.practicallynetworked.com

3. ## Re: Network Speeds

T1 is 1.4something megabit/s and a T3 is 27 T1's I do believe.
A T1 line is roughly 1.5Mb/s
A T3 line is roughly 45Mb/s

You can always purchase fractions also. Like a 1/4 T1 line is common. The major appeal is that it is a dedicated line, and takes higher priority by the technicians than standard POTS lines (hence the ridiculous prices). OC whatever connections are fibre optic, and get even more pricey. Like the best OC-192 price I saw a bit ago was for \$20,000 a month.

Oh, i found this for you to look at.
http://www.techtv.com/callforhelp/an...473347,00.html

4. ## Re: Network Speeds

Cool.

thanx

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