Frequent Disconnects and reconnects
Actiontec Q1000 modem/router, drops connection several times a day and reconnects on its own in roughly 30 seconds.
Here's some history:
3-4 weeks ago my internet is down. No rebooting of the modem will fix it. I log into the admin page and it's in a walled garden. I am forced to visit a centurylink page to install and setup my router. I found this strange since I had been a customer for years. Whatever, I did it and it worked fine.
Whether or not that is relevant I don't know. That's about the time the disconnects started and I've gone through several steps to isolate the problem, including having a line tech come out and tell me my line was fine after looking at it for about 1 second. Here is the modem data during normal operation:
Broadband Mode Setting: MULTIMODE
Broadband Mode Detected: VDSL2 - 8A
DSL Link Uptime: 0 Days, 11H:6M:33S
Retrains in Last 24 Hours: 4
Loss of Power Link Failures: 0
Loss of Signal Link Failure: 0
Loss of Margin Link Failure: 0
Link Train Errors: 0
Unavailable Seconds: 115
Estimated Loop Length: N/A
Un-Canceled Echo: N/A
ATM QoS class: N/A
PTM VLAN QoS: 0
MTU Size: 1500
VLAN: PTM 201
Packets Sent: 0
Packets Received: 0
Error Packets Sent: 0
Error Packets Received: 0
30 Minute Discarded Packets Upstream: 0
30 Minute Discarded Packets Downstream: 0
Channel Type: Interleaved
Near End CRC Errors: 33016
Far End CRC: 0
30 Minute Near End CRC: 918408
30 Minute Far End CRC: 0
Near End RS FEC: 0
Far End RS FEC: 0
30 Minute Near End FEC: 1135871
30 Minutes Far End FEC: 0
Levels Downstream Upstream
SNR: 11 dB 23 dB
Attenuation: 5 dB 0 dB
Power: 17 dBm 5.3 dBm
your SNR for downstream is low when it retrains your SNR is probably dropping to low
Fenagled with some phone jacks in the house and got the downstream SNR up to 18
13+ hours after messing with the phone jack I've had zero errors, zero retrains, and steady 18dbm downstream and 31dbm upstream SNR.
Phone jack had 2 exposed wires that were up against a metal wall plate (used for hanging the older, heavier phones). The wires could have easily made contact to the plate and shorted, likely injecting a lot of noise on the line.
Calling this solved.
Welp, started again last night. Ran a direct like to the box outside through a window and will let it run for a day or 2 and go from there.
Still acting up even while connected directly to the NID. Since it takes about 12 hours after I unplug the modem and let it sit (or cool down) I'm thinking the modem is overheating.
I am/was having the exact same issue. For me it was the CRC errors were incrementing. What I found was that just before the DSL dropped the SNR downstream would drop to below 2dB.
I also had a line tech come out and he cleaned up the lines and increased my DSL speed. He saw no errors on the line.
I also found that if I unplugged my C1000A the problem would go away for a time. The longer it ran the more frequent the DSL dropping became to a point.
I searched around and could not find a good post about this and so I figured I better replace the modem and see what happens. I just installed the very same modem C1000A. The first thing I noticed is that my downstream SNR was 14db. On my old modem the best I saw was 9db. The new modem has been installed for about 1hr and so far no CRC errors and my SNR is between 12 and 14db.
I am pretty convinced that this is an issue with the ActionTec C1000A. I looked for updated firmware but I was running the latest. I would recommend giving them a call. It is possible they have a component issue.
|reply to Kenster |
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