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This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!

Packet Loss: Difference between revisions

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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.
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.


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[[File:Cqm-loss.png|frame|Packet loss on an idle line is always bad news, even if only 1% (one red dot at the top is 1%).]]
[[File:Cqm-loss.png]]

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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!==
==2% loss is not like 98% working speed!==
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