I see many people having problems with "T3 Timeout", but I have not seen a simple explanation as to what it means/indicates and where in the system between me and VM they occur. Can someone enlighten me?
In simple terms it means that your Hub has failed to receive its routine regular response from the CMTS (the next point up cable network) for more than a set number of tries. It then assumes it has lost connection and has to start setting up a fresh connection. The most common reason for this is too much noise on the line.
A few T3 timeouts are nothing to worry about, but lots would be. It's normally noise on the Upstream circuit and the Hub can't get a response from the CMTS. So it just retries and this is a T3 error.
PreRS errors are corrected errors in the data transmission and nothing to worry about as they have been corrected. PostRS errors are the bad ones, these are data transmission errors that cannot be corrected. Typically these errors occur on noisy circuits and need an engineer to resolve.
That's a simple view, for more concise and proper detailed information, Google is your friend.
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When would depend on if you mean by myself or the stupid Hub 3!
But seriously, yesterday afternoon by the Hub several times, by me last night several times (including a reset) to try to get a decent connection, which I eventually got. Then by the Hub first thing this morning and they by myself several times (again including a reset) to try to get a decent connection, but it's still rubbish.
Also having problems accessing the HUB to get a report, browser times out on most attempts. Speed test check results are generally OK, but take a long time to initially respond.