[jem]

"Possibly something to do with the power levels looking at the logs perhaps?

Warning REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value
Warning RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW
Warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW” *

I would say ‘sort of’ but these messages aren’ the issue but they are hinting at what the issue probably is. I’m going to hazard a guess that you have an upstream connectivity issue, the big clue is in the modem log you provided, specifically the ‘No ranging response received - T3 timeout’.

Cable modems ie the hub send out a ‘ranging request’ every 30 seconds or so, this is a sort of ‘I’m still on line, can you hear me’ to the device at the other end of the line, the CMTS in VM’s centres. The responses are sort of saying ‘yes but you are very faint, you need to increase power' and by more than the hub should do.

Eventually the hub loses connectivity completely (no ranging response received), and will reset itself, which appears as a complete disconnection.

So why around 2pm? Well this is just speculation but 2-3pm tends to be the hottest part of the day, heat makes the cables expand, which increases their impedance (resistance); if it is borderline, then this might just be enough to push it over the edge.

When the tech turns up, say that the logs clearly show an upstream power issue and can they check all of the connections and/or move you to a different tap on the street cabinet?


* just on the off chance that anyone is interested, ignore the first of the warning messages, it’s fine. The second and third are basically the same thing; translated into English, they are saying;

Warning (OK fair enough, this is just a warning message) RNG-RSP (that’s shorthand for ranging response, ie the reply from VM’s equipment) CCAP commanded power (CCAP is Converged Cable Access Platform - which is a fancy term for the equipment your hub is ultimately connected to) has instructed to hub to increase its power

However it has request the hub to increase power by more than the limit set buy the hub’s DRW - Dynamic Range Window, the upper and lower limits of what the hub should stick to, which hoppers to be 6dBm. The hub is complaining that it has been instructed to increase power by more than it is programmed to do in one go. I do think the message is not well worded though.

In general anything in the hub logs that are flagged as ‘Warning’, means just that, this is not quite right, but I can deal with it. Which is why I originally said that these menages are ‘hinting’ at what the issue is, but not really the issue itself.