> Hey everybody, I am totally new to ethereal. I just ran a random
capture last night before I went to bed to see what would > happen.
When I got up it had capture almost 250000 packets in 6 hours. Now I was
wondering is this normal for a cable
> modem? Or is my computer going crazy sending and receiving
packets? I am on a cable modem with winXP.
I assumed each packet was full (1500),
and that the traffic was all going in one direction.
250,000 packets * 1500 bytes = 375,000,000
bytes
375,000,000 bytes / 1024 = 366,211 K
bytes
366,211 K Bytes / 1024 = 358 MB
If you download few big files you could
do 358MB over 6 hours, but if the packets are smaller you wouldn’t have
to move so much data to reach 250,000 packets. Think about that over
time. 250,000 / 6 hours, then divide by 60 minutes, then by 60
seconds.
How many packets per second is it?
I calculate 11.57 packets per second.
Assume they are full packets.
1500 bytes * 12 = 18,000 bytes roughly 18K
per second
I bet your cable modem can download much
faster than that.
So I would say yes, that sounds normal. To
learn who was talking during that time you can use the “Conversations”
from the menu.
Dig into the contents of the
conversations to see what is being transferred.
David DuPre'
Executive Performance Engineering
Consultant
HyPerformix Inc.
Office: 706-820-2252
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