ME3750/6524 Switch Latency

Unanswered Question
Oct 29th, 2009

Anyone got any figures of what latency a switch introduces from an ingress to egress Ethernet interface..how many microseconds?

I have this problem too.
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Joseph W. Doherty Thu, 10/29/2009 - 05:45

That depends on the switch. Even on the same switch, might vary depending on whether it might change how it forwards frames, e.g. cut-through vs. store-and-forward. Also depends on port speeds and, for store-and-forward, frame size. Rough ball park might be 10 to 40 microseconds.

[edit]

PS:

"Cut-through switches can reduce switch-to-switch latency from 15 to 50 microseconds to 2 to 4, he says. "

ref: http://www.networkworld.com/news/2009/091409-switch.html?page=2

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