Hi All Having been away over Xmas with the router left as such a short break. I looked at Routerstats ealier late this afternoon and noticed the margin had dropped to 2.5...............it had hovered around 3 for a good while but I did see it dip to 1.9 !!!! However, here are the stats for Routerstats..........as you can see the total uptimes IMO are very nice for such figures. DL Noise Margin: 2.0 dB Connection Rate: 3913 Kbps Line Attenuation: 55.0 dB Power: 0.0 dBm Max Rate: 4620 Kbps
UL Noise Margin: 6.6 dB Connection Rate: 820 Kbps Line Attenuation: 28.4 dB Power: 12.9 dBm Max Rate: 840 Kbps
SuperFrames: 93425601 SF (CRC) Errors: 0 Reed Solomon: 1963158 RS Corrected: 3 RS Un-Corrected: 0 HEC: 0 Errored Seconds: 0 Severe ES: 0 Interleave Depth: 4 Bitswaps: 23203 Total uptimes Total Uptimes (From SF counts): WAN: 19 days, 07:13:18 LAN: 19 days, 07:13:18
CRC: 12021 LOS: 1 LOF: 0 ES : 6879
PS Was just about to post and the Margin now says 1.9db PPS Just checked BT speedtest:- Speed 3.31Mbps IP 3.45Mbps UL speed 0.7Mbps UL IP 0.83Mbps PlusNet IP 3.5Mbps All as as has been since the IP mismatch was sorted out early'ish into my current sync of 3913
It often depends on the router, and also of course on the normal night-time dip amount. Some routers will even hold connection at -1dB. What has probably happened over time is that bit-swapping has occurred to the level that certain frequencies/bins have been ruled out by the router for effective use. As the other bins' spare space, (their margin) is swallowed up by the bit allocation swapped in to maintain the sync speed, the average noise margin across them all, which is we see at this level, has to fall. Once it does that they don't come back into service until a router re-sync. And if there isn't sufficient spare capacity in any bins to do any more bit-swapping, that's when you get a disconnection.