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T4 errors / constant disconnects

anyone experiencing these, or getting constant disconnects over the past 6 months?

Motorola MB8600.

running a 5 second ping connection test, so far i have 23 disconnects in less than 24 hours.

there are no splitters, and one single connection from the line inside my house.

 Wed Apr 4 18:18:13 2018    Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:49:e6:5f;CMTS-MAC=2c:86:d2:89:e0:ef;CM-QOS=1.1;CM-VER=3.1;" 
 Wed Apr 4 18:18:24 2018    Notice (6)   Honoring MDD; IP provisioning mode = IPv4" 
 Wed Apr 4 18:18:27 2018    Warning (5)   DHCP WARNING - Non-critical field invalid in response ;CM-MAC=00:40:36:49:e6:5f;CMTS-MAC=2c:86:d2:89:e0:ef;CM-QOS=1.1;CM-VER=3.1;" 
 Wed Apr 4 18:18:27 2018    Notice (6)   TLV-11 - unrecognized OID;CM-MAC=00:40:36:49:e6:5f;CMTS-MAC=2c:86:d2:89:e0:ef;CM-QOS=1.1;CM-VER=3.1;" 
 Wed Apr 4 18:18:30 2018    Warning (5)   Dynamic Range Window violation" 
No Data
  • Hello,

    We can certainly look into this issue for you. Please send us an email with your full address to so we can help.


    Allan - Cox Support Forums Moderator.