US Cable Support > Cox HSI > [NV] Cox Internet continually dropping in Las Vegas area

[NV] Cox Internet continually dropping in Las Vegas area

Send me your cable modem's MAC address and I'll take a look.

Nothing immediately jumps out - I've added your modem to our more frequent diagnostic poller and will hopefully catch something the next time it happens.

Let me know at what time (relatively precisely, if possible - within a minute would be great) the next time you see this happen is and I'll go back through things and see if we can't see some reason for it.

reply to Alan A
Happened just now at 10:23 PM

I went and looked, and we actually did a lot of maintenance activity in your node the past couple days - I believe the 10:23 drop was part of that. It looks like it is wrapped up now (and the levels and error correction counts don't make me a sad engineer any more), so let me know when/if it happens again - I still have you in our monitoring system.

reply to Alan A
Happened again at 9:51 PM and 10:06 PM. It seems to lag a lot less now, but it happens more often at night now.

Looks like our tech came out and replaced a bad splitter yesterday. How have things been since?

I got a HUGE lag spike at 8:05. US and DS lights went off and then reset after 30 seconds. This is really getting frustrating when playing games.

EDIT: 8:05 PM

We have techs out trying to chase down a very intermittent issue in your node - the new ticket was opened yesterday and they're continuing to try to chase it down today.

We're working on it, but I can't give an ETA - intermittent problems like these are time consuming to fix (have to get the problem happening long enough to give the tech enough time to trace it down).

Getting lag spikes at 7:45 PM

EDIT: I just did a speedtest. It's slower than it usually is at night.

The modem went out at 10:26 PM and then booted back up at 10:28 PM. The TEL 1 light began flashing afterwards (it's usually consistently lit).

Running into upload outage in my area on my Motorola SB5120(only model that works on my part of the line for some reason). It's been happening around 11am-2pm and 10pm-2am give or take some time over the past couple days.My downstream seems to be fine but, my upload is non-existent(I would post the speedtest.net but, upload won't go.) I've tried tests both on and off my D-link DIR-645 router with no difference. At most I can only upload small images and in video games my position doesn't update quickly and rubber bands like crazy.

reply to Alan A
Modem went down at 2:51 PM

reply to Alan A
It's gotten much, much worse. My modem's crashed three times in the past thirty minutes (5:57 PM). This is really getting old.

2012-11-23 19:24:407-InformationC203.0DCC arrive new
2012-11-23 19:24:357-InformationC202.0DCC depart old
2012-11-23 19:22:186-NoticeI401.0TLV-11 - unrecognized OID
2012-11-23 19:22:177-InformationB401.0Authorized
2012-11-23 19:22:155-WarningC04.1rgstToD request sent - Response received
2012-11-23 19:22:053-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:21:563-CriticalU02.0UCD invalid or channel unusable
2012-11-23 19:21:453-CriticalC206.0DCC aborted unable to communicate on new upstream channel
2012-11-23 19:21:453-CriticalR04.0Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout
2012-11-23 19:21:153-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:21:143-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:21:113-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:21:093-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:21:073-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:21:063-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:21:053-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:21:043-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:21:034-ErrorC401.0DCC-ACK not received
2012-11-23 19:21:037-InformationC203.0DCC arrive new
2012-11-23 19:21:037-InformationC203.0DCC arrive new
2012-11-23 19:21:037-InformationC203.0DCC arrive new
2012-11-23 19:21:027-InformationC203.0DCC arrive new
2012-11-23 19:21:013-CriticalR05.0Started Unicast Maintenance Ranging - No Response received - T3 time-out
2012-11-23 19:21:003-CriticalR05.0Started Unicast Maintenance Ranging - No Response received - T3 time-out
2012-11-23 19:20:593-CriticalR05.0Started Unicast Maintenance Ranging - No Response received - T3 time-out
2012-11-23 19:20:587-InformationC202.0DCC depart old
2012-11-23 19:18:297-InformationC203.0DCC arrive new
2012-11-23 19:18:247-InformationC202.0DCC depart old
2012-11-23 19:08:147-InformationC203.0DCC arrive new
2012-11-23 19:08:097-InformationC202.0DCC depart old
2012-11-23 19:02:113-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:02:093-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:02:073-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:02:063-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:02:053-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:02:053-CriticalR02.0No Ranging Response received - T3 time-out
2012-11-23 19:02:044-ErrorC401.0DCC-ACK not received
2012-11-23 19:02:047-InformationC203.0DCC arrive new
2012-11-23 19:02:047-InformationC203.0DCC arrive new
2012-11-23 19:02:037-InformationC203.0DCC arrive new
2012-11-23 19:02:037-InformationC203.0DCC arrive new
2012-11-23 19:02:023-CriticalR05.0Started Unicast Maintenance Ranging - No Response received - T3 time-out
2012-11-23 19:02:013-CriticalR05.0Started Unicast Maintenance Ranging - No Response received - T3 time-out
2012-11-23 19:02:003-CriticalR05.0Started Unicast Maintenance Ranging - No Response received - T3 time-out
2012-11-23 19:01:597-InformationC202.0DCC depart old
2012-11-23 18:43:057-InformationC203.0DCC arrive new
 

How... irritating. That's a LOT of T3s.

Can you PM me your contact name and phone number - I'm going to escalate this internally, and people's information on their accounts seems frequently wrong.

reply to Alan A
I also live here in Vegas. I don't know if the modem is the one that's causing the problem here. Initially when I signed up with COX 3 years ago. I had to purchase a refurbished modem from them. It was also a Motorola Surfboard. This modem would give me inconsistent connection. When I changed my modem into a linkys cm100. All of a sudden the connection became more stable.

reply to CoxVegas
I came to dslreports tonight to learn whether regular T3 errors were common. Apparently they're not a good sign. Here's what I get:

No Ranging Response received - T3 time-out;CM-MAC=00:22:[snip];CMTS-MAC=64:00:[snip];CM-QOS=1.1;CM-VER=3.0;

Yesterday, those were coming several times an hour, according to the logs. I've had 2 in the last 30 minutes. I also get:

SYNC Timing Synchronization failure - Loss of Sync
Lost MDD Timeout
Cable Modem Reboot due to MDD Loss
TLV-11 - unrecognized OID

A tech was here two days ago because we had gone completely dark. Now we're back online, but the error & reboot cycles are more frequent than before. Could my modem be faulty?

Downstream SNR: 37dB
Downstream Power Level: -1dBmV
Upstream Power Level: 46dBmV

Derek, PM me your modem MAC and I'll take a look.

reply to Alan A
Still occurring. It dropped 5+ times in a 30 minute period. This makes gaming hell.

2012-12-20 18:36:297-InformationC203.0DCC arrive new
2012-12-20 18:36:247-InformationC202.0DCC depart old
2012-12-20 18:24:137-InformationC203.0DCC arrive new
2012-12-20 18:24:087-InformationC202.0DCC depart old
2012-12-20 18:22:196-NoticeI401.0TLV-11 - unrecognized OID
2012-12-20 18:22:187-InformationB401.0Authorized
2012-12-20 18:22:165-WarningC04.1rgstToD request sent - Response received
2012-12-20 18:22:093-CriticalR02.0No Ranging Response received - T3 time-out
2012-12-20 18:22:083-CriticalR02.0No Ranging Response received - T3 time-out
2012-12-20 18:22:003-CriticalU02.0UCD invalid or channel unusable
2012-12-20 18:21:503-CriticalC206.0DCC aborted unable to communicate on new upstream channel
2012-12-20 18:21:503-CriticalR04.0Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout
2012-12-20 18:21:203-CriticalR02.0No Ranging Response received - T3 time-out
2012-12-20 18:21:193-CriticalR02.0No Ranging Response received - T3 time-out
2012-12-20 18:21:163-CriticalR02.0No Ranging Response received - T3 time-out
2012-12-20 18:21:143-CriticalR02.0No Ranging Response received - T3 time-out
2012-12-20 18:21:123-CriticalR02.0No Ranging Response received - T3 time-out
2012-12-20 18:21:113-CriticalR02.0No Ranging Response received - T3 time-out
2012-12-20 18:21:103-CriticalR02.0No Ranging Response received - T3 time-out
2012-12-20 18:21:093-CriticalR02.0No Ranging Response received - T3 time-out
2012-12-20 18:21:094-ErrorC401.0DCC-ACK not received
2012-12-20 18:21:097-InformationC203.0DCC arrive new
2012-12-20 18:21:097-InformationC203.0DCC arrive new
2012-12-20 18:21:087-InformationC203.0DCC arrive new
2012-12-20 18:21:087-InformationC203.0DCC arrive new
2012-12-20 18:21:073-CriticalR05.0Started Unicast Maintenance Ranging - No Response received - T3 time-out
2012-12-20 18:21:063-CriticalR05.0Started Unicast Maintenance Ranging - No Response received - T3 time-out
2012-12-20 18:21:053-CriticalR05.0Started Unicast Maintenance Ranging - No Response received - T3 time-out
2012-12-20 18:21:047-InformationC202.0DCC depart old
2012-12-20 18:11:547-InformationC203.0DCC arrive new
2012-12-20 18:11:497-InformationC202.0DCC depart old
2012-12-20 18:01:067-InformationC203.0DCC arrive new
2012-12-20 18:01:017-InformationC202.0DCC depart old
2012-12-20 17:15:517-InformationC203.0DCC arrive new
2012-12-20 17:15:467-InformationC202.0DCC depart old
2012-12-20 16:38:477-InformationC203.0DCC arrive new
2012-12-20 16:38:427-InformationC202.0DCC depart old
2012-12-20 16:35:516-NoticeI401.0TLV-11 - unrecognized OID
 

reply to Alan A
Found out that it lags whenever this happens:

2012-12-21 18:00:45 7-Information C203.0 DCC arrive new
2012-12-21 18:00:40 7-Information C202.0 DCC depart old

Results from googling this says it's because the modem is DOCSIS 2