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Monday, October 19th, 2020 9:00 AM

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Random WAN Outages

Hi,

 

Very randomly, but typically at least once a day.  My WAN connection will fail.  Everything on LAN is still fine, but my cable modem (Netgear CM1200) reports no connection.

 

In the logs I typically see messages like this.

 

Mon Oct 19 09:55:37 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:3f:a1:68;CMTS-MAC=00:59:dc:79:f3:24;CM-QOS=1.1;CM-VER=3.1;
Mon Oct 19 09:25:18 2020Warning (5)Dynamic Range Window violation
Mon Oct 19 09:25:18 2020Warning (5)RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=08:36:c9:3f:a1:68;CMTS-MAC=00:59:dc:79:f3:24;CM-QOS=1.1;CM-VER=3.1;
Mon Oct 19 09:24:31 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:3f:a1:68;CMTS-MAC=00:59:dc:79:f3:24;CM-QOS=1.1;CM-VER=3.1;
Mon Oct 19 09:23:44 2020Warning (5)Dynamic Range Window violation
Mon Oct 19 09:23:44 2020Warning (5)RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=08:36:c9:3f:a1:68;CMTS-MAC=00:59:dc:79:f3:24;CM-QOS=1.1;CM-VER=3.1;
Mon Oct 19 09:23:44 2020Critical (3)

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:3f:a1:68;CMTS-MAC=00:59:dc:79:f3:24;CM-QOS=1.1;CM-VER=3.1;

 

And here's the current "status" page.

 

Startup Procedure
ProcedureStatusComment
Acquire Downstream Channel549000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
SecurityEnabledBPI+
IP Provisioning ModeHonor MDDhonorMdd(4)
 
Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
1LockedQAM25625549000000 Hz-4 dBmV40.3 dB397735
2LockedQAM2561399000000 Hz-2 dBmV41.6 dB15182124
3LockedQAM2562405000000 Hz-2.1 dBmV41.5 dB16622171
4LockedQAM2563411000000 Hz-2.1 dBmV41.5 dB14261968
5LockedQAM2564417000000 Hz-2.1 dBmV41.6 dB12241483
6LockedQAM2565423000000 Hz-2 dBmV41.6 dB11501349
7LockedQAM2566429000000 Hz-2 dBmV41.5 dB11701282
8LockedQAM2567435000000 Hz-2 dBmV41.5 dB12351221
9LockedQAM2568441000000 Hz-2.1 dBmV41.4 dB12331335
10LockedQAM2569447000000 Hz-2.2 dBmV41.4 dB11951505
11LockedQAM25610453000000 Hz-2.2 dBmV41.3 dB10621478
12LockedQAM25611459000000 Hz-2.3 dBmV41.2 dB9131365
13LockedQAM25612465000000 Hz-2.3 dBmV41.1 dB7041196
14LockedQAM25613471000000 Hz-2.6 dBmV41 dB623950
15LockedQAM25614477000000 Hz-2.7 dBmV41 dB6741015
16LockedQAM25615483000000 Hz-2.6 dBmV41 dB6881145
17LockedQAM25616489000000 Hz-2.9 dBmV40.9 dB7621203
18LockedQAM25617495000000 Hz-3 dBmV40.7 dB6391337
19LockedQAM25618507000000 Hz-3.1 dBmV40.7 dB4711041
20LockedQAM25619513000000 Hz-3.1 dBmV40.8 dB442800
21LockedQAM25620519000000 Hz-3.2 dBmV40.6 dB424576
22LockedQAM25621525000000 Hz-3.5 dBmV40.4 dB401665
23LockedQAM25622531000000 Hz-3.7 dBmV40.4 dB348739
24LockedQAM25623537000000 Hz-3.8 dBmV40.4 dB486697
25LockedQAM25624543000000 Hz-4 dBmV40.3 dB419842
26LockedQAM25626555000000 Hz-4.2 dBmV40.2 dB230537
27LockedQAM25627561000000 Hz-4.1 dBmV40.1 dB217320
28LockedQAM25628567000000 Hz-4.5 dBmV39.9 dB266266
29LockedQAM25629573000000 Hz-4.7 dBmV39.9 dB237308
30LockedQAM25630579000000 Hz-4.9 dBmV39.8 dB252351
31LockedQAM25631585000000 Hz-5.2 dBmV39.7 dB329427
32LockedQAM25632591000000 Hz-5.1 dBmV39.6 dB289449
 
Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA55120 Ksym/sec37800000 Hz46.3 dBmV
2LockedATDMA65120 Ksym/sec31400000 Hz45.8 dBmV
3LockedATDMA75120 Ksym/sec25000000 Hz45.8 dBmV
4LockedATDMA85120 Ksym/sec18600000 Hz45.3 dBmV
5Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
6Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
7Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
8Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
 
Downstream OFDM Channels
ChannelLock
Status
Modulation /
Profile ID
Channel
ID
FrequencyPowerSNR /
MER
Active Subcarrier
Number Range
Unerrored
Codewords
Correctable
Codewords
Uncorrectable
Codewords
1Locked0159690000000 Hz-4.1 dBmV39.2 dB1126 ~ 296991067797452582684950
2Not Locked000 Hz0 dBmV0.0 dB0 ~ 4095000
 
Upstream OFDMA Channels
ChannelLock StatusModulation / Profile IDChannel IDFrequencyPower
1Not Locked000 Hz0 dBmV
2Not Locked000 Hz0 dBmV
 
Extended Upstream Transmit Power
Enable Extended Upstream Transmit Power
 
Current System Time:Mon Oct 19 10:03:13 2020
System Up Time:2 days 17:30:32

 

 

As far as I can tell, I only have a single splitter on my coax line.  And I did try removing it, but nothing changed.

 

Can someone help me out?

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