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pigzmickey
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Cold weather speed issues

Whenever it gets cold I get a really slow Internet conn, if I can speedtest, I see around 1Mbs D/L with zero U/L but the speedtest normally fails before completion. It should be about 222Mbs.

Does anyone understand this log data...?

Network Log

First TimeLast TimePriorityError NumberDescription
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
30/01/2018 08:00:19 GMT30/01/2018 08:00:19 GMTCritical (3)82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

 

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Dave_cq
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Re: Cold weather speed issues

Hmmm, ok.  Well that's knocked my theory on the head.  When you said it happens in cold weather I was expecting to see very high downstream power levels higher than the 10dBmV maximum because you see, cold shrinks the cable length making the power rise ... the reverse is true in hot weather.  But I'm not seeing that.  In fact your downstream power levels and Signal To Noise ratios are ideal and so are the Upstream power levels.

That leaves those 1143 T4 timeouts which clearly indicates something is very wrong.  Channel 1 Upstream is also saying 'Ranging Status - Other' and has some T3 and that is also weird.

I think you will need an engineer's visit.  Call 150 from a VM phone (free) or 0345 454 1111 (standard rates) to book a visit.

 

 

********* SuperHub 2ac - Asus rt-ac68u Router - Vivid 100Mbps **********

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Dave_cq
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Re: Cold weather speed issues

Hi pigzmickey,

The log isn't quite as bad as it first appears because if you look all those T4 time outs have exactly the same time stamp of 08:00:19.  I think there's a little bug in the hub's software that causes that mis-reporting.  That said, you should never experience even one T4.

What would be helpful is if you could go back into the hub's Router Status screens where you found the network log and post here all the data for Downstream and Upstream and we can see if your power levels are a cause for concern.

Would you also check that the cable connections to the back of the hub and to the wall socket are done up securely.

 

 

********* SuperHub 2ac - Asus rt-ac68u Router - Vivid 100Mbps **********

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pigzmickey
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Re: Cold weather speed issues

Thanks for the help/advice...

Information

Cable ModemEuroDOCSIS 3.0 Compliant
Serial Number483154W505161
Boot Code VersionPSPU-Boot 1.0.20.1391
Software VersionV2.01.12
Hardware Version1.03
CA KeyInstalled

 

Cable Modem StatusItem Status Comments

Acquired Downstream Channel (Hz)227000000Locked
Ranged Upstream Channel (Hz)24400000Success
Provisioning State

 

Downstream  DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8

Frequency (Hz)227000000219000000235000000243000000251000000259000000267000000275000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock)LockedLockedLockedLockedLockedLockedLockedLocked
Channel ID8791011121314
Modulation256QAM256QAM256QAM256QAM256QAM256QAM256QAM256QAM
Symbol Rate (Msym/sec)6.9520006.9520006.9520006.9520006.9520006.9520006.9520006.952000
Interleave DepthI=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
I=12
J=17
Power Level (dBmV)3.603.503.113.703.263.713.283.30
RxMER (dB)38.2637.9437.3638.2638.2638.9838.2638.26
Pre RS Errors2869166910364229481013336976
Post RS Errors292326923288934998319963

 

Upstream  US-1 US-2 US-3 US-4

Channel TypeN/A2.02.0N/A
Channel IDN/A98N/A
Frequency (Hz)N/A2440000031000000N/A
Ranging StatusOtherTimeout T4SuccessN/A
ModulationN/A16QAM16QAMN/A
Symbol Rate (Sym/sec)N/A51200005120000N/A
Mini-Slot SizeN/A44N/A
Power Level (dBmV)N/A44.5043.50N/A
T1 Timeouts0000
T2 Timeouts0000
T3 Timeouts8600
T4 Timeouts0114300

 

General Configuration

Network AccessAllowed
Maximum Number of CPEs1
Baseline PrivacyEnabled
DOCSIS ModeEuroDOCSIS 3.0
Config File 

Primary Downstream Service Flow

SFID197628
Max Traffic Rate230000000 bps
Max Traffic Burst42600 bytes
Min Traffic Rate0 bps

Primary Upstream Service Flow

SFID197627
Max Traffic Rate12700000 bps
Max Traffic Burst16320 bytes
Min Traffic Rate0 bps
Max Concatenated Burst16320 bytes
Scheduling TypeBest Effort
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Dave_cq
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Message 4 of 7
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Re: Cold weather speed issues

Hmmm, ok.  Well that's knocked my theory on the head.  When you said it happens in cold weather I was expecting to see very high downstream power levels higher than the 10dBmV maximum because you see, cold shrinks the cable length making the power rise ... the reverse is true in hot weather.  But I'm not seeing that.  In fact your downstream power levels and Signal To Noise ratios are ideal and so are the Upstream power levels.

That leaves those 1143 T4 timeouts which clearly indicates something is very wrong.  Channel 1 Upstream is also saying 'Ranging Status - Other' and has some T3 and that is also weird.

I think you will need an engineer's visit.  Call 150 from a VM phone (free) or 0345 454 1111 (standard rates) to book a visit.

 

 

********* SuperHub 2ac - Asus rt-ac68u Router - Vivid 100Mbps **********

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pigzmickey
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Re: Cold weather speed issues

Thanks Dave, I've performed a reboot & a power recycle to see if it gets any better, not much change when used but the log has changed. What do you think...

Network Log

First Time

Last Time

Priority

Error Number

Description

30/01/2018 12:15:14 GMT

30/01/2018 12:15:14 GMT

Error (4)

68010302

DHCP WAN IP - *********

30/01/2018 12:14:23 GMT

30/01/2018 12:14:23 GMT

Error (4)

68000407

TOD established

Time Not Established

Time Not Established

Notice (6)

84000510

Downstream Locked Successfully

Time Not Established

Time Not Established

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

Time Not Established

Time Not Established

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

Time Not Established

Time Not Established

Warning (5)

84020200

Lost MDD Timeout

Time Not Established

Time Not Established

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

Time Not Established

Time Not Established

Warning (5)

84020200

Lost MDD Timeout

Time Not Established

Time Not Established

Warning (5)

84020200

Lost MDD Timeout

Time Not Established

Time Not Established

Warning (5)

84020200

Lost MDD Timeout

Time Not Established

Time Not Established

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

Time Not Established

Time Not Established

Warning (5)

84020200

Lost MDD Timeout

Time Not Established

Time Not Established

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

Time Not Established

Time Not Established

Warning (5)

84020200

Lost MDD Timeout

Time Not Established

Time Not Established

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

Time Not Established

Time Not Established

Warning (5)

84020200

Lost MDD Timeout

Time Not Established

Time Not Established

Critical (3)

82000200

No Ranging Response received - T3 time-out

Time Not Established

Time Not Established

Warning (5)

84020200

Lost MDD Timeout

Time Not Established

Time Not Established

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

Time Not Established

Time Not Established

Warning (5)

84020200

Lost MDD Timeout

 

 

 

Network Log

First Time

Last Time

Priority

Error Number

Description

30/01/2018 10:33:23 GMT

30/01/2018 10:33:23 GMT

Error (4)

68010302

DHCP WAN IP - ***********

30/01/2018 10:32:31 GMT

30/01/2018 10:32:31 GMT

Error (4)

68000407

TOD established

Time Not Established

Time Not Established

Notice (6)

84000510

Downstream Locked Successfully

30/01/2018 10:30:49 GMT

30/01/2018 10:30:49 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:30:25 GMT

30/01/2018 10:30:25 GMT

Warning (5)

66050310

Auth Success - Web login successful.

30/01/2018 10:30:19 GMT

30/01/2018 10:30:19 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:29:49 GMT

30/01/2018 10:29:49 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:29:19 GMT

30/01/2018 10:29:19 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:28:49 GMT

30/01/2018 10:28:49 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:28:19 GMT

30/01/2018 10:28:19 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:27:49 GMT

30/01/2018 10:27:49 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:27:19 GMT

30/01/2018 10:27:19 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:26:49 GMT

30/01/2018 10:26:49 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:26:19 GMT

30/01/2018 10:26:19 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:25:49 GMT

30/01/2018 10:25:49 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:25:19 GMT

30/01/2018 10:25:19 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:24:49 GMT

30/01/2018 10:24:49 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:24:19 GMT

30/01/2018 10:24:19 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:23:49 GMT

30/01/2018 10:23:49 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

30/01/2018 10:23:19 GMT

30/01/2018 10:23:19 GMT

Critical (3)

82000400

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

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Dave_cq
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Message 6 of 7
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Re: Cold weather speed issues

Still looking bad ... loads of T4 time outs and lost MDD.  You will need that engineer callout.

 

 

********* SuperHub 2ac - Asus rt-ac68u Router - Vivid 100Mbps **********

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Re: Cold weather speed issues

I'm sorry to hear about the connection trouble experienced pigzmickey,

 

I've had a look into this for you and everything appears to be within range.

 

Have things since improved for you at all?

 

Nat_J


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