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Network Interface bytes sent a second.

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20 years 9 months ago #2667 by Kn1ght
Okay maybe I'm just dense but if it can send/recieve 100Mb per second and it has that much to send shouldn't it send close to that number or at least more then 20kbs ? You said that 12Mb/s is good, well I'm not getting close to that. But I guess it is a switched network....

Thanks again

Thanks
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20 years 9 months ago #2669 by sahirh
Whoa whoa slow down... don't confuse MegaBYTES per second with MegaBITS per second.. this should sort it out
whatis.techtarget.com/definition/0,,sid9_gci212534,00.html

On a switched network, since every machine has what is essentially a peer to peer link, they should have the whole available fastethernet bandwidth available to them.. thats what makes it faster than a hub.. using a hub, all machines SHARE the 100Mbps connection.

Btw what makes you think you're getting only 20kbps, you mentioned that you were getting 8,029,103 bytes per second, that works out to 8 megabytes per second.. which is exactly what you should be seeing. Your boss is right, all looks peachy.. obviously some times the traffic is less etc... what you might want to do is do some monitoring for highest and lowest values, as well as average transfer values..

I think MRTG (multi-router traffic graph) might be able to do something similar to what you need.. and draw a pretty little graph as well ;)

Did I confuse you more ?

Sahir Hidayatullah.
Firewall.cx Staff - Associate Editor & Security Advisor
tftfotw.blogspot.com
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20 years 9 months ago #2671 by Chris
Knight,

Just remember that you should never expect to see 12 megabytes per second transfers in a 100Mbit network. In practice from theory is very different and you should know this by experience.

The maximum I've ever seen in a switched network is around 7Mbytes/sec! So as Sahir said ... with 8Mbytes/sec, your doing fine!


Cheers,

p.s Tfs, you recon we could add this small paragraph to Sahir's white paper :lol:

Chris Partsenidis.
Founder & Editor-in-Chief
www.Firewall.cx
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20 years 9 months ago #2672 by tfs
Sounds like a good idea.

Also, it might be nice to explain how to look at the network to figure out how much data is being transmitted.

Thanks,

Tom
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20 years 9 months ago #2673 by sahirh
<grumbles> First they made me break my head figuring out how data is transmitted.. now I have to figure out how much data as well.. </grumbles>

:lol:

Sahir Hidayatullah.
Firewall.cx Staff - Associate Editor & Security Advisor
tftfotw.blogspot.com
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18 years 5 months ago #15043 by mohsinzb
Replied by mohsinzb on topic capturing ethernet frames
do u know how to capture recieved complete ethernet frame along with the MAC address from the ethernet adapter on the PC in VC++6.0
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