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Very slow upload speed

For the last 3 days my upload speed has been neglible, often as low as 0.01mbps. Upload speed has been extremely variable too, though typically above 20mbps. This is making it very hard to work or use email etc, as DNS is often failing, as are any outbound network requests.

Please can this be investigated.

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Re: Very slow upload speed

How are you speedtesting and from what device?

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Re: Very slow upload speed

I'm using SpeedTest.net from a laptop attached to the network over ethernet. Have also repeated the test from the Ookla app on an iPhone with the same result.

Tracert shows 2ms to my router, then subsequent timeouts and longer hops. The hops themselves aren't terrible but the timeouts indicate a problem:

 

Tracing route to www-bbc-com.bbc.net.uk [212.58.237.249]
over a maximum of 30 hops:

1 2 ms 2 ms 2 ms 192.168.0.1
2 * * * Request timed out.
3 12 ms 13 ms 9 ms oxfd-core-2b-xe-123-0.network.virginmedia.net [62.254.129.97]
4 * * * Request timed out.
5 * * * Request timed out.
6 14 ms 26 ms 12 ms telw-ic-5-ae0-0.network.virginmedia.net [62.253.174.186]
7 23 ms 20 ms 13 ms tele-ic-1-ge-302-233.network.virginmedia.net [212.250.14.129]
8 * * * Request timed out.
9 20 ms 14 ms 12 ms ae0.er01.telhc.bbc.co.uk [132.185.254.109]
10 19 ms 15 ms 20 ms 132.185.255.148
11 18 ms 17 ms 15 ms 212.58.238.5
12 14 ms 14 ms 12 ms 212.58.237.249

 

Slow performance is evident across all the devices on the network, wired and wireless. I was also seeing internet disconnects on the router, one of which was for over 30 minutes claiming it was unauthorised. Internal networking is fine across all devices. I have rebooted the router several times, and done a factory reset.

I understand there were known infrastructure issues in the area at the start of the week but am not aware of whether they've been resolved.

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Re: Very slow upload speed

Could you access your router using http://192.168.0.1/ . Don't log in, select the 'Check Router Status' option and paste your 'Downstream', 'Upstream', and 'Network Log' tabs?

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Re: Very slow upload speed

Network Log

Time Priority Description

09/07/2020 13:50:55noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 13:44:51noticeUnit has been restored to factory defaults from a software issued command;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 13:41:39noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 12:38:18Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 12:38:14criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 12:38:13Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 12:38:13criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 12:36:48Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 12:36:48criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 09:02:8Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 09:01:59Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 09:01:54criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 09:01:54Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 09:01:54criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 09:01:53Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 09:01:36Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 09:01:34criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 09:01:30Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 09:01:30criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2020 09:01:30Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

 

Downstream bonded channels

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

1458250000540256 qam7
24102500005.340256 qam1
3418250000540256 qam2
44262500004.840256 qam3
54342500004.540256 qam4
64422500004.940256 qam5
74502500004.840256 qam6
84662500004.540256 qam8
94742500004.840256 qam9
104822500004.440256 qam10
114902500004.540256 qam11
12498250000440256 qam12
135062500004.540256 qam13
145142500004.540256 qam14
155222500004.540256 qam15
165302500004.340256 qam16
17538250000440256 qam17
18546250000440256 qam18
195542500003.540256 qam19
205622500003.440256 qam20
215702500003.240256 qam21
225782500003.240256 qam22
235862500003.240256 qam23
245942500003.440256 qam24

 

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Re: Very slow upload speed

Upstream bonded channels

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

1461999574.525512064 qam1
2257999514.4512064 qam4
3394001344.5512064 qam2
4325999604.475512064 qam3



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000
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Re: Very slow upload speed

There is another table of data below 'Downstream bonded channels' that we need please.

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Re: Very slow upload speed

Sorry, some of it got stripped out by formatting:

Downstream bonded channels

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

1458250000540256 qam7
24102500005.340256 qam1
3418250000540256 qam2
44262500004.840256 qam3
54342500004.540256 qam4
64422500004.940256 qam5
74502500004.840256 qam6
84662500004.540256 qam8
94742500004.640256 qam9
104822500004.440256 qam10
114902500004.540256 qam11
12498250000440256 qam12
135062500004.440256 qam13
145142500004.540256 qam14
155222500004.540256 qam15
165302500004.140256 qam16
17538250000440256 qam17
18546250000440256 qam18
195542500003.540256 qam19
205622500003.440256 qam20
215702500003.240256 qam21
225782500003.240256 qam22
235862500003.240256 qam23
245942500003.240256 qam24



Downstream bonded channels

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

1Locked40.940
2Locked40.900
3Locked40.940
4Locked40.960
5Locked40.910
6Locked40.980
7Locked40.360
8Locked40.380
9Locked40.950
10Locked40.910
11Locked40.300
12Locked40.320
13Locked40.350
14Locked40.9100
15Locked40.350
16Locked40.360
17Locked40.3100
18Locked40.390
19Locked40.3100
20Locked40.340
21Locked40.380
22Locked40.390
23Locked40.390
24Locked40.3100
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Re: Very slow upload speed

The timeouts could be servers that don't respond to ping requests..

Mine takes nigh-on the same path with the same timed out hops.

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Re: Very slow upload speed

Most of the values look 'ok'.

Some errors, but nothing terrible. You may need an engineer visit, or one of the VM staff, to investigate further.