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Broadband disconnects every 15mins. Speed very slow <5mbps - usually 75mbps

Hi there.

I am having trouble with my broadband (hub 3.0 and package M70) disconnecting all devices including wired devices every 15-20mins. Then the hub does a full reboot. When i am connected the speed is very slow around 5mbps instead of around 75mbps. This is wired directly into the hub. Wireless is slightly worse.

All tests are saying everything is ok and theres no known issues in my area. The hub looks normal throughout this (white power light stable - no other lights) occasionally the green arrow lights come on and stay lit during the time when it disconnects and reboots.

Can anyone much smarter than I am help me to work out whats going on please?  I'll upload the downstream and upstream data in a separate message as this one wont let me add it here.

Thank you.

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Re: Broadband disconnects every 15mins. Speed very slow <5mbps - usually 75mbps

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1Locked36.32660532
2Locked3510284202594
3Locked3531005773228
4Locked3533323813540
5Locked34.932290462713
6Locked34.314091822371
7Locked35604592559
8Locked36.3228882170
9Locked36.3102441661
10Locked36.350051178
11Locked36.328091555
12Locked36.627681342
13Locked36.62934887
14Locked36.63188582
15Locked36.634571060
16Locked36.333031178
17Locked36.630231229
18Locked36.627951008
19Locked36.328451543
20Locked36.62630744
21Locked36.32568555
22Locked36.62735800
23Locked36.32646998
24Locked27.61620738813837617

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1537000005.025512064 qam2
2462000005.1512064 qam3
3394000005.1512064 qam4
4603000005.075512064 qam1



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000

Network Log

Time Priority Description

28/04/2020 11:27:6Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 11:22:3Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 11:21:21ErrorService Change Response rejected - Invalid transaction ID;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 11:17:34Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 11:15:2ErrorService Add Ack rejected - Invalid transaction ID;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 11:15:1Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 10:55:7Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 10:54:58Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 10:25:31Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 10:25:25Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 10:17:54Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 10:17:49Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 08:45:18Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 08:15:59Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 08:15:32criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 08:15:10criticalReceived Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 08:15:1criticalREG RSP not received;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 08:15:1ErrorT6 Timeout and retries exceeded;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 08:15:1criticalRegistration RSP rejected unspecified reason;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2020 08:15:1criticalRegistration RSP rejected message syntax error;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

 

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Alessandro Volta
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Helpful Answer

Re: Broadband disconnects every 15mins. Speed very slow <5mbps - usually 75mbps

Upstream levels are too high there.

You'll need an engineer visit to resolve. 


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Re: Broadband disconnects every 15mins. Speed very slow <5mbps - usually 75mbps

Sorry i just realised that I didnt copy all the data. Apologies.

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

14587500009.436256 qam37
22667500007.135256 qam17
32747500005.635256 qam18
42827500005.935256 qam19
52907500007.835256 qam20
62987500008.433256 qam21
7306750000734256 qam22
83147500007.336256 qam23
9322750000936256 qam24
103307500008.836256 qam25
113707500008.536256 qam26
123787500008.636256 qam27
133867500009.636256 qam28
143947500009.536256 qam29
154027500008.536256 qam30
164107500008.936256 qam31
174187500009.536256 qam32
184267500009.536256 qam33
194347500008.836256 qam34
204427500008.336256 qam35
21450750000936256 qam36
224667500008.936256 qam38
234747500008.636256 qam39
24482750000927256 qam40



Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1Locked36.62670532
2Locked35191333942594
3Locked35228181363234
4Locked35336469103540
5Locked35173414282713
6Locked33.918629922371
7Locked34.92933082559
8Locked36.3301692170
9Locked36.3102741661
10Locked36.650161178
11Locked36.628131555
12Locked36.627721342
13Locked36.62935887
14Locked36.33193582
15Locked36.634661060
16Locked36.633131178
17Locked36.630281229
18Locked36.627991008
19Locked36.628531543
20Locked36.32641744
21Locked36.32579555
22Locked36.32746800
23Locked36.32663998
24Locked27.59152033715507432
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