CAX80 poor network status and sometimes network dropped

Question

Hi,&nbsp;&nbsp;Not sure if anyone has the similar issue, please check the cable connection details shown below, it keep showing poor network status and I have changed a coax wire but it is not getting better. There is no splitter in the setup. Also in the event log there are multiple timeout logs. Please kindly advise if there is any. Thanks.&nbsp;&nbsp;Cable Connection:&nbsp;Cancel&nbsp;ApplyCable DiagnosticStatus:&nbsp;&nbsp;&nbsp;PoorAction:&nbsp;&nbsp;[Partial Service]If the Partial Service mode does not go away within a few hours (Click the Refresh button after each step):1) Make sure the coaxial cable is tightly connected.2) Remove any unnecessary&nbsp;splitters.3) Replace any required ones.4) Contact your service provider for troubleshooting help.Internet Access:&nbsp;Downstream Status:&nbsp;Upstream Status:&nbsp;&nbsp;Refresh&nbsp;Save Cable Diagnostic Info&nbsp;Advanced InformationFrequency Start ValueThis field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.Starting Frequency&nbsp;Startup ProcedureProcedureStatusCommentAcquire Downstream Channel555 MHzLockedConnectivity StateOKOperationalBoot StateOKOperationalSecurityEnabledBPI+&nbsp;Downstream Bonded ChannelsChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables1Locked256 QAM28555000000 Hz6.3 dBmV42.6 dB002Locked256 QAM4405000000 Hz7.0 dBmV43.3 dB003Locked256 QAM5411000000 Hz7.1 dBmV43.2 dB004Locked256 QAM6417000000 Hz7.0 dBmV43.3 dB005Locked256 QAM7423000000 Hz7.3 dBmV43.4 dB006Locked256 QAM8429000000 Hz7.5 dBmV43.5 dB007Locked256 QAM9435000000 Hz7.5 dBmV43.3 dB008Locked256 QAM10441000000 Hz7.6 dBmV43.2 dB009Locked256 QAM11447000000 Hz7.5 dBmV43.3 dB0010Locked256 QAM12453000000 Hz7.7 dBmV43.3 dB0011Locked256 QAM13459000000 Hz7.7 dBmV43.3 dB0012Locked256 QAM14465000000 Hz7.8 dBmV43.4 dB0013Locked256 QAM15471000000 Hz7.6 dBmV43.4 dB0014Locked256 QAM16477000000 Hz7.7 dBmV43.3 dB0015Locked256 QAM17483000000 Hz7.5 dBmV43.2 dB0016Locked256 QAM18489000000 Hz7.4 dBmV43.1 dB0017Locked256 QAM19495000000 Hz7.3 dBmV43.0 dB0018Locked256 QAM20507000000 Hz7.5 dBmV43.1 dB0019Locked256 QAM21513000000 Hz7.4 dBmV43.0 dB0020Locked256 QAM22519000000 Hz7.4 dBmV43.1 dB0021Locked256 QAM23525000000 Hz7.3 dBmV43.1 dB0022Locked256 QAM24531000000 Hz7.1 dBmV43.0 dB0023Locked256 QAM25537000000 Hz6.8 dBmV42.8 dB0024Locked256 QAM26543000000 Hz6.6 dBmV42.8 dB0025Locked256 QAM27549000000 Hz6.3 dBmV42.6 dB0026Locked256 QAM29561000000 Hz6.1 dBmV42.6 dB0027Locked256 QAM30567000000 Hz5.9 dBmV42.5 dB0028Locked256 QAM31573000000 Hz5.8 dBmV42.4 dB0029Locked256 QAM32579000000 Hz6.0 dBmV42.5 dB0030Locked256 QAM33585000000 Hz6.1 dBmV42.5 dB0031Locked256 QAM34591000000 Hz5.7 dBmV42.3 dB0032Not LockedUnknown00 Hz0.0 dBmV0.0 dB00&nbsp;Upstream Bonded Channels (Partial Service)ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower1LockedATDMA45120 Ksym/sec35600000 Hz43.3 dBmV2LockedATDMA15120 Ksym/sec16400000 Hz38.8 dBmV3LockedATDMA25120 Ksym/sec22800000 Hz36.5 dBmV4LockedATDMA35120 Ksym/sec29200000 Hz38.8 dBmV5Not LockedUnknown0000.0 dBmV6Not LockedUnknown0000.0 dBmV7Not LockedUnknown0000.0 dBmV8Not LockedUnknown0000.0 dBmV&nbsp;Downstream OFDM ChannelsChannelLockStatusModulation /Profile IDChannelIDFrequencyPowerSNR /MERActive SubcarrierNumber RangeUnerroredCodewordsCorrectableCodewordsUncorrectableCodewords1Locked0 ,1 ,2 ,348688000000 Hz5.78 dBmV40.9 dB1108 ~ 2987548904205451500002Not Locked000 Hz0 dBmV0 dB0 ~ 4095000&nbsp;Upstream OFDMA ChannelsChannelLock StatusModulation / Profile IDChannel IDFrequencyPower1Not Locked000 Hz0 dBmV2Not Locked000 Hz0 dBmV&nbsp;Event logs:&nbsp;&nbsp;TimePriorityDescriptionMon Dec 13 22:34:36 2021Critical (3)No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;Mon Dec 13 22:34:36 2021Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;Mon Dec 13 22:34:36 2021Critical (3)Ranging Request Retries exhausted;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;Mon Dec 13 22:33:32 2021Critical (3)No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;Mon Dec 13 22:33:32 2021Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;Mon Dec 13 22:33:32 2021Critical (3)Ranging Request Retries exhausted;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;Mon Dec 13 22:32:49 2021Critical (3)No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;Mon Dec 13 22:32:48 2021Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;Mon Dec 13 22:32:48 2021Critical (3)Ranging Request Retries exhausted;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;Mon Dec 13 22:31:38 2021Critical (3)No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;Mon Dec 13 22:31:37 2021Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;

plemans · Accepted Answer

Your right. Your logs are indicating a line issue but the cable connections page is pretty spot on for looking good.&nbsp;
These types of issues are harder to track.&nbsp;
If you've changed out the coax and have a direct connection coming in, then the ISP would need to check it.&nbsp;

Forum Discussion

CAX80 poor network status and sometimes network dropped

1 Reply

Time	Priority	Description
Mon Dec 13 22:34:36 2021	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;
Mon Dec 13 22:34:36 2021	Critical (3)	16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;
Mon Dec 13 22:34:36 2021	Critical (3)	Ranging Request Retries exhausted;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;
Mon Dec 13 22:33:32 2021	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;
Mon Dec 13 22:33:32 2021	Critical (3)	16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;
Mon Dec 13 22:33:32 2021	Critical (3)	Ranging Request Retries exhausted;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;
Mon Dec 13 22:32:49 2021	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;
Mon Dec 13 22:32:48 2021	Critical (3)	16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;
Mon Dec 13 22:32:48 2021	Critical (3)	Ranging Request Retries exhausted;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;
Mon Dec 13 22:31:38 2021	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;
Mon Dec 13 22:31:37 2021	Critical (3)	16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=08:36:c9:a1:3a:68;CMTS-MAC=00:01:5c:70:08:52;CM-QOS=1.1;CM-VER=3.1;