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Packet Loss: Difference between revisions
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→Packet loss when a link is otherwise idle is a fault.
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The best measure of loss as a simple percentage is the loss when sending full size packets (1500 bytes) which is what the data transfer protocols (like TCP) use. Even a 1% or 2% of loss of such packets can cause TCP to slow down massively. It does not work like taking away a couple of percent of speed - the data transfers keep slowing down as they keep thinking the line must be full.
[[File:Cqm-loss.png]]
Packet loss on an idle line is always bad news, even if only 1% (one red dot at the top is 1%).
==2% loss is not like 98% working speed!==
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