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Old 15-05-2008, 20:06   #234
foddy
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Join Date: May 2004
Posts: 38
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Re: 50Mbit Rollout Has Started

Quote:
Originally Posted by spiderplant View Post
I was measuring at the ethernet frame level (dest MAC up to, but possibly not including, FCS). But the all-important bit is that it was indeed delaying ACKs. I didn't take too much notice, but I think the data to ACK packet ratio was around 1.6.
OK, that sounds fair. So your ACK packets would have been 54 bytes? 78/54 is 1.44. 1/46*50*1.44 = 1.57.

For *ethernet*, you're still over 1.5M. Does anyone have in-depth knowledge of the framing used on cable modems, and how exactly the bandwidth is limited?
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