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ndpatacsil01's avatar
ndpatacsil01
Aspirant
Aug 08, 2018

Cm500 disconnection issues constantly

Hello just bought this to replace my Optimum/Cablevision modem. However, getting lots of issues with it where internet connection will be okay then reset after 10 min over an over.  It was regist...
Hardware
Troubleshooting
vadim125's avatar
vadim125
Aspirant
Aug 08, 2018

Hi,

Looks like i am having similar issue.  I change cable modem from optimum provided one just over a month ago.  Optimum modem had no issues for years but cm500 so far lost connection twice, about 2 weeks apart.  T4, T3 and timing synchronization issue from the log.  cables look like in good condition.  there is only one split at the house entry and few meters runs.  firmware is 1.01.04.  i know 1.01.05 is recomended.  i dont know if this is related.  Considering that this is not happening often i dont think this is cable related.  Very annoying.

Below log from today:

Time

Priority

Description

2018-8-8, 16:21:14

Critical (3)

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=a0:04:60:bd:23:80;CMTS-MAC=00:01:5c:95:b6:77;CM-QOS=1.1;CM-VER=3.0;

2018-8-8, 16:21:43

Critical (3)

No Ranging Response received - T3 time-out;CM-MAC=a0:04:60:bd:23:80;CMTS-MAC=00:01:5c:95:b6:77;CM-QOS=1.0;CM-VER=3.0;

1970-1-1, 00:00:20

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=a0:04:60:bd:23:80;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;

1970-1-1, 00:00:26

Critical (3)

No Ranging Response received - T3 time-out;CM-MAC=a0:04:60:bd:23:80;CMTS-MAC=00:01:5c:95:b6:77;CM-QOS=1.0;CM-VER=3.0;

1970-1-1, 00:00:32

Notice (6)

Honoring MDD; IP provisioning mode = IPv4

1970-1-1, 00:00:34

Warning (5)

DHCP WARNING - Non-critical field invalid in response ;CM-MAC=a0:04:60:bd:23:80;CMTS-MAC=00:01:5c:95:b6:77;CM-QOS=1.0;CM-VER=3.0;

2018-8-8, 17:56:59

Error (4)

Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=a0:04:60:bd:23:80;CMTS-MAC=00:01:5c:95:b6:77;CM-QOS=1.1;CM-VER=3.0;

2018-8-8, 17:56:59

Error (4)

Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=a0:04:60:bd:23:80;CMTS-MAC=00:01:5c:95:b6:77;CM-QOS=1.1;CM-VER=3.0;