Cable Forum - View Single Post - ntl:250 event log

Uncle Peter · 08-12-2006, 10:33

From Cisco KB:

%UBR900-3-T3_TIMEOUT_II: R05.0 Started Unicast Maintenance Ranging no Response received. T3 time-out.

Explanation: The cable modem is online and sent a periodic Ranging Request (RNG-REQ) message to the CMTS, without receiving a Ranging Response (RNG-RSP) from the CMTS within the T3 timeout period. The cable modem will send another RNG-REQ message, up to the maximum of 16 successive attempts. This error message is DOCSIS event message is R05.0, Ranging Request.

Recommended Action: No action is needed because it is normal for a cable system to occasionally lose MAC-layer messages, especially when multiple cable modems transmit RNG-REQ messages at the same time.

So it's probably nothing to worry about at this point

08-12-2006, 10:33	#3
Uncle Peter Inactive Join Date: Nov 2006 Location: on holiday by mistake Age: 56 Services: Vivid 200, Full House, V6 x2 Posts: 5,977	Re: ntl:250 event log - is this normal? From Cisco KB: %UBR900-3-T3_TIMEOUT_II: R05.0 Started Unicast Maintenance Ranging no Response received. T3 time-out. Explanation: The cable modem is online and sent a periodic Ranging Request (RNG-REQ) message to the CMTS, without receiving a Ranging Response (RNG-RSP) from the CMTS within the T3 timeout period. The cable modem will send another RNG-REQ message, up to the maximum of 16 successive attempts. This error message is DOCSIS event message is R05.0, Ranging Request. Recommended Action: No action is needed because it is normal for a cable system to occasionally lose MAC-layer messages, especially when multiple cable modems transmit RNG-REQ messages at the same time. So it's probably nothing to worry about at this point