unstable internet connection

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I've Been Here Awhile
Posts: 2

unstable internet connection

Recently I find my internet always disconnect .  I check router's log I find .  


Time                                            ID            Level                Description
Fri Feb 28 18:23:30 2014 82000400 Critical (3) Received Response to Broadcast Maintenance Request, But no Un...
Fri Feb 28 18:22:30 2014 82000200 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=18:59:33:f3...
Fri Feb 28 18:22:15 2014 82000900 Warning (5) B-INIT-RNG Failure - Retries exceeded;CM-MAC=18:59:33:f3:fa:d...
Fri Feb 28 18:22:15 2014 82000200 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=18:59:33:f3...
Fri Feb 28 18:21:49 2014 82000900 Warning (5) B-INIT-RNG Failure - Retries exceeded;CM-MAC=18:59:33:f3:fa:d...
Fri Feb 28 18:21:49 2014 82000200 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=18:59:33:f3...
Fri Feb 28 18:21:31 2014 82000900 Warning (5) B-INIT-RNG Failure - Retries exceeded;CM-MAC=18:59:33:f3:fa:d...
Fri Feb 28 18:21:31 2014 82000200 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=18:59:33:f3...
Fri Feb 28 18:21:07 2014 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries...
Fri Feb 28 18:21:07 2014 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Fri Feb 28 18:21:05 2014 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ...
Fri Feb 28 18:21:05 2014 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries...
Fri Feb 28 18:21:05 2014 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Fri Feb 28 18:20:57 2014 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ...
Fri Feb 28 18:20:57 2014 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries...
Fri Feb 28 18:20:57 2014 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Fri Feb 28 18:20:56 2014 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ...
Fri Feb 28 18:20:56 2014 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries...
Fri Feb 28 18:20:56 2014 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Fri Feb 28 18:20:47 2014 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ...
Fri Feb 28 18:20:47 2014 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries...
Fri Feb 28 18:20:47 2014 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Fri Feb 28 18:11:14 2014 82000400 Critical (3) Received Response to Broadcast Maintenance Request, But no Un...
Fri Feb 28 18:10:31 2014 2436694064 Critical (3) Booting up the cable modem
Time Not Established 68000100 Critical (3) DHCP FAILED - Discover sent, no offer received;CM-MAC=18:59:3...
Time Not Established 84000100 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/Q...

 

Any solution?

 

 

***edited labels***

Resident Expert
Resident Expert
Posts: 13,853

Re: unstable internet connection

Which gateway are you using.. and in what area do you live?

SOme of thos messages.. while they seem bad, can be fairly regular (i get alot of them on mine), but done necessarily disconnect you.

How often are the disconnects?  Hourly? or at least.. on the same hour timeframe, if many hours apart? (EG:  2:30, 5:30, etc).



I'm a Trusted Contributor
Posts: 337

Re: unstable internet connection

I have Cisco DPC3825 and have exactly the same error in the log all the time.

 

Critical (3) Received Response to Broadcast Maintenance Request, But no Un...

 

Also have no idea what that error might be and whether there are any consequences.

Resident Expert
Resident Expert
Posts: 13,853

Re: unstable internet connection

I get that on the SMC.  I think its fairly normal.. you wouldnt think an ERROR would be.. but doesnt seem to effect stuff Smiley Tongue



I've Been Around
Posts: 1

Re: unstable internet connection

I'm having exactly the same problem.  Intermittent outage, slow speeds, sometimes 1Mbps down and 4Mbps up, when normally it's ~20Mbps down and 4Mbps up.  Rebooting gateway and PC's does not fix. 

 

Cisco DPC3825 DOCSIS 3.0 Gateway