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Peengy
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Buffering

Hello,

I occasionally get buffering whilst watching streaming video. It happens whilst in my phone using WiFi and it also happens on my Fire TV that has a wired connection.

According to speedtest.net my download speed is 182M and upload is 11M.

The network diagnostic shows no issues but the Network log shows a few issues but I don't know if they are related.

 

Time Priority Description

20/05/2019 10:16:46noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-rtsxl20016u+voc-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
20/05/2019 11:22:21criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/05/2019 20:13:10ErrorDHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/05/2019 01:06:49ErrorDHCP REBIND WARNING - Field invalid in response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/05/2019 01:06:49noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-rtsxl20016u+voc-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/05/2019 06:20:47criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/05/2019 09:39:54ErrorDHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/05/2019 12:36:20criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/05/2019 20:38:58ErrorDHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
30/05/2019 04:35:29criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
30/05/2019 04:53:16ErrorDHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
30/05/2019 07:38:6ErrorDHCP REBIND WARNING - Field invalid in response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
30/05/2019 07:38:6noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-rtsxl20016u+voc-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
30/05/2019 21:52:50criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/06/2019 14:24:5ErrorDHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/06/2019 05:34:57criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/06/2019 11:25:20ErrorDHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/06/2019 18:25:48ErrorDHCP REBIND WARNING - Field invalid in response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/06/2019 18:25:48noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-rtsxl20016u+voc-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
05/06/2019 00:17:10criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

 

Any help would be appreciated.

Cheers.

 

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Dave_cq
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Re: Buffering

Hi, can you also post your Downstream and Upstream data so we can see if there's an issue with power levels.

 

 

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

Electron
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Peengy
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Re: Buffering

Hi Dave,

Thanks for the quick reply, sorry for not including all the info you needed earlier. Is this what you asked for?

Downstream bonded channels

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

1259000000-1.240256 qam16
2139000000-0.238256 qam1
3147000000-0.540256 qam2
4155000000-0.540256 qam3
5163000000-0.540256 qam4
6171000000-0.238256 qam5
7179000000-0.438256 qam6
8187000000-0.238256 qam7
9195000000-0.438256 qam8
10203000000-0.538256 qam9
11211000000-0.738256 qam10
12219000000-0.740256 qam11
13227000000-138256 qam12
14235000000-140256 qam13
15243000000-1.240256 qam14
16251000000-1.240256 qam15
17267000000-1.440256 qam17
18275000000-1.540256 qam18
19283000000-1.540256 qam19
20291000000-1.738256 qam20
21299000000-1.738256 qam21
22307000000-1.740256 qam22
23315000000-1.540256 qam23
24323000000-1.540256 qam24

 

Downstream bonded channels

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

1Locked40.32603299454
2Locked38.982481725460
3Locked40.369525615710
4Locked40.380898912063
5Locked40.38231375122
6Locked38.610107182372
7Locked38.9942506834
8Locked38.91009529767
9Locked38.911068931029
10Locked38.91221708958
11Locked38.91403820413
12Locked40.31498381383
13Locked38.92073615489
14Locked40.31969381476
15Locked40.32037011451
16Locked40.32279928461
17Locked40.92386483778
18Locked40.323589161015
19Locked40.325586203816
20Locked38.930587968498
21Locked38.9319006822948
22Locked40.3305710020140
23Locked40.9347130232612
24Locked40.34256314

78713

 

Upstream bonded channels

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

1326000003.65512064 qam5
2394000003.65512064 qam4
3462000003.65512064 qam3
4537000003.65512064 qam2



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000

 

Hopefully thats what you are after but if you need any more info let me know.

 

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Dave_cq
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Message 4 of 7
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Re: Buffering

Hmm, well this is a bit of a puzzle.  The Downstream and Upstream power levels are all within the specified ranges as is the Signal To Noise Ratio and yet you have a lot of Post-RS errors when on a healthy connection there should be none.  All I can think of is you may have an intermittent fault and as we all know those can be a Bleep to track down.

I'm afraid all I can suggest is checking your cable connections at the back of the hub and at the wall socket to make sure they are secure.

 

 

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

Electron
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Peengy
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Message 5 of 7
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Re: Buffering

I've checked all the connections and they are all tight and secure. Thank you for your help and for taking the time to look into the problem for me.

 

All the best

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jbrennand
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Message 6 of 7
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Re: Buffering


@Peengy wrote:

I've checked all the connections and they are all tight and secure. Thank you for your help and for taking the time to look into the problem for me.

 

All the best



Just  to check the RS errors, these may be historical build up. Can you reboot the router and then check they have reset to 0 and then check every hour or so whether they are building up.
Also, do you have any powerlines or ethernet switches in the loop?
Do you get dropouts or is it just a speed issue?


--------------------
John
--------------------

My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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Peengy
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Message 7 of 7
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Re: Buffering

Hiya,

I rebooted the Hub but the logs didn't disappear. I tried to 'refresh data' but that did not remove them either so I do not know how to remove the Network Logs.

I will try and keep an eye on it and I will try and note the time I have issues to compare.

I have no powerlines but I do have a network switch. It is a Netgear GS116Ev2. I can log into it but most of the info doesn't mean much to me. It does say there are 0 CRC error packets on any port if that is any help.

The issue I have is I can be happily watching a streaming Video (on Youtube or Twitch say) then the video will buffer for a fair amount of time (I'd say about 20s to 1 minute although I will try timing it now). Sometimes in Twitch the video will buffer but the text chat will continue meaning that when the Video resumes they are quite out of sync.

Thanks for your help

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