I've been running an SB6141 with a Linksys E3200 for years with no issues. Rx +1 SNR 38 Tx 41 average signal levels. 180+ DS 12 US speeds. Ipv6 connection.
Three weeks ago I got an SB6183. Got it activated and all was fine. 16 channels avg. RX -1 SNR 40 Tx 41. Same speeds as before and Ipv6. No unusual log entries.
That night, as I knew it would, Cox pushed their firmware. Same signal levels as the day before, same speeds. But no Ipv6. Checking the log, there were the same entries continually repeating every 1 to 4 seconds for hours.
Started Unicast Maintenance Ranging - No response received
Unicast Ranging Received Abort Response - Re-initializing
Those with T3's and T4's after something about 16 tries. There were the occasional DHCP warnings and just about every other event log entry I had ever heard of. And one I'd never seen:
Provisioned for Ipv4.
This went on every day for about a week. This would be going on while I was online with no effect on the connection or speed tests. I was actually more bothered by the lack of Ipv6 than the log entries.
Cox was incredibly unresponsive to my emails. First guy said they did not support Ipv6. What? Second guy clarified that and said he showed my router was not pulling an Ipv6 address from the modem. Right, that's why I'm writing. The third girl started right at the top of the CSR troubleshooting manual. Remove all splitters, connect directly to the modem, let us know the results. Yea, I'll get right back to you with that.
Realizing that the log events were mostly upstream related and remembering long ago reading an Arris tech sheet saying the minimum upstream power was 45 for the 6183 I tried an experiment. I put a 3 pad on the line. It lowered Rx to the -5 range and increased Tx to 44. Still no Ipv6.
I gave it a day and checked the logs. None of those previous entries. In fact, no entries at all after the reboot sequence the day before. And none since.
The obvious question(s) I had was if the CMTS could not hear my modem then why didn't the CMTS tell my modem to increase power? How could it initialize successfully and then not communicate afterwards? And why no Ipv6? Does the 6183 not play well with the E3200? What's in that Cox SB6183 firmware anyway?
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