How do we claculate BW?

[juandc]

How do we calculate the BW. For example if I have 100 Mbs connection. How much data can transfer in a month?.

[Denis]

X kbytes*60*60*24*30=X kbytes/1000000=X gigabytes

100 Monthly average Mbps = 32,400 gigabytes per month Monthly Average Rate

http://www.exceptional.net/bandwidth/calculate.asp

http://www.valkaryn.net/bwcalc/

[juandc]

Thank You denis for your info. If I want to split traffic into different port, What routeror swithc you would recommend?.

[Denis]

I would suggest
Linksys: WAG54G - Wireless-G ADSL Gateway
http://www.linksys.com/international...oid=6&ipid=371 ,

Wireless-B Broadband Router BEFW11S4
http://www.linksys.com/international...oid=6&ipid=480

or
Netgear FVS318
http://www.netgear.com/products/details/FVS318.php .

[juandc]

Thanks denis. It really helps a lot.

[Denis]

You're welcome!

Originally Posted by juandc

Thank You denis for your info. If I want to split traffic into different port, What routeror swithc you would recommend?.

Just out of curiosity, do you need VLan's or trunking for that? If so, I really like the Cisco 2924-en XL's.... They are great little switches..

Originally Posted by juandc

How do we calculate the BW. For example if I have 100 Mbs connection. How much data can transfer in a month?.

note though unless you have 1gb connection to the net you will never push/pull 100Mbps thats 100megabit so theres 8 bits to a byte so divide 100 by 8 gives you what you can actually push so maxing out a 100Mbs lan card would mean 12.5megabytes a second max which = 4.5gigabytes a month

Originally Posted by adamint

note though unless you have 1gb connection to the net you will never push/pull 100Mbps thats 100megabit so theres 8 bits to a byte so divide 100 by 8 gives you what you can actually push so maxing out a 100Mbs lan card would mean 12.5megabytes a second max which = 4.5gigabytes a month

You just said you will never push 100 Mb/s on a 100 Mb/s line. That is untrue. You would push 100 Mb/s if you include the TCP overhead. you won't push 100 MB/s which is what you seemed to be explaining. Let me explain.

You have 24 hours per day and 30 days on average per month, for a total of 720 hours per month. At 12.5 MB/s you will get

(12.5 (megabytes per second)) * 1 hours = 43.9453125 gigabytes

Acording to google.

Now, multiply that * 720 or just type this into google

12.5 megabytes per second * 720 hours = ? gigabytes

and you will get the following:

(12.5 (megabytes per second)) * 720 hours = 31 640.625 gigabytes

You will get the same by substituting 12.5 megabytes with 100 megabits per second.

(100 (megabits per second)) * 720 hours = 31 640.625 gigabytes

To reach 4.5 Gigabytes would only take about 360 seconds. See below:

(100 (megabits per second)) * 360 seconds = 4.39453125 gigabytes

Hope this helps a little bit.

BTW, off of my 1 Gb/s line, I expect to get around this much transfer

(1 000 (megabits per second)) * 720 hours = 316 406.25 gigabytes