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ozsat
Recognised Expert
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Message 1 of 6

Broadband speed drops everynight - any ideas?

So this has been going on for a number of weeks - anyone got any ideas?

I use the BT Exchange speed test site - so it is nothing to do with any WiFi or ethernet interference in house.

During the course of these problems - the only thing usually connected to the Hub is the BTtv Ultra HD box in Fast Load Standby.  We proved that is not the issue by removing it from the network.

BT have been out and are happying that everying in the house is correct. Even swapped the Hub6 to a SmartHub2 which made no different to this issue. I will be going back to the Hub6 once the issue is resolved.

Even switched off wifi in both bands - no difference.

Openreach came out and confirmed everything in house is correct and there are no issues at all back to cabinet with the line speed registering 55Mpbs.  Openreach engineer who turned up was here to check the line and not their cabinet which wasn't useful - awaiting another visit now.

The BT hub always has the data rate and max data rate fields set to 53-55/10 - even during the overnight issue.

So within a Mp/s - the following are the same results everyday for weeks - without fail.  These speedtest are done from a different ISP to retain the fact that no devices are conneted.

If I connect the computer via Ethernet or WiFi then Ookla test gives same results witin a couple of Mb/s.  The upload speed is never an issue as is always 9-10Mpbs even during the slow download.

I can only put this down to happening every night (without fail) at some point between 10pm and 4.30am.

Because the issue is so consistent - I don't think it is a hardware issue in the network but more likely a config issue which drops the rate to maybe 20/10 overnight when it should be 50/10 ??

I think a hardware or intermittent fault would not be 100% consistent in happening at same time with same speeds involved.

Got three day wait before the next visit in what has been a long line of appointments.

Open to suggestions as nobody at BT or Openreach has had a fix yet.

 

Screenshot 2021-05-30 075821.png

Screenshot 2021-05-30 081227.png

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using Superfast Fibre 2 Unlimited with BT TV Box Pro (UHD/HDR).
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imjolly
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Message 2 of 6

Re: Broadband speed drops everynight - any ideas?

 please can you post the stats from your router  if HH6/SH2 then advanced settings then technical log information . 

enter your phone number and post results  remember to delete number but leave exchange and cab

  https://www.broadbandchecker.btwholesale.com/#/ADSL

can you run btspeedtester with ethernet connection when download speed appears ok and then again when appears bad and post both set of results

it may be congestion and engineer visits will not fix that

Someone may then be able to offer help/assistance/suggestions to your problem



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ozsat
Recognised Expert
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Message 3 of 6

Re: Broadband speed drops everynight - any ideas?

I can't see it being a conjestion issue - daytime stats are always above 44Mb/s. This drop occurs in the early hours. They have even looked at time graphs going back over a couple of months. They can see a different cabinet fault on 20 Apr when out speed was down to just 3Mpbs download but they was resolved. This 20Mpbs started shortly after that.

The speedtest were originally done when connect to the hub - I've just gradually removed stuff since the issue and switched them to a different ISP.  Had some WiFi and Ethernet devices  on BT but the speeds have never changed within 1-2Mb/s.

I've checked the availability checker during both slow and normal times - and the results never change beyond 1-2Mb/s.

BT and Openreach looked at the event logs for over a 24 hour period and at no point is there any indication.  The only regular thing I see is this:

02:00:01 30 May. DoS(UDP Loopback): IN=ppp1 OUT= MAC= src=146.xxx.xxx.xxx DST=81.xxx.xxx.xxx LEN=29 TOS=0x00 PREC=0x00 TTL=243 ID=54321 PROTO=UDP SPT=40569 DPT=19 LEN=9 MARK=0x8000000 

 

That appears night on the Smart Hub 2 logs - but never in the Hub6 logs.

 

 

Screenshot 2021-05-30 103018.png

Screenshot 2021-05-30 103730.png

 

This is a log showing everything from being at normal speed (48Mb/s) - dropping to slow (19Mb/s) and rebooting back to normal speed at about 8am. I've removed a lot of CWMP references to shrink to size.

08:03:00 30 May. CWMP: HDM socket opened successfully.  
08:02:59 30 May. CWMP: Server URL: https://pbthdm.x.x.x; Connecting as user: ACS username  
08:02:59 30 May. CWMP: Session start now server: https://pbthdm.x.x.x Event code: 1 BOOT
08:02:59 30 May. CWMP: Initializing transaction for event code 1 BOOT  
08:02:21 30 May. Broadband Line Id Result = Success  
08:02:21 30 May. NTP synchronization success  
08:02:21 30 May. NTP Server: ntp.homehub.btopenworld.com  
08:02:07 30 May. WAN Sensing Auto sensing Complete interface selected
08:02:07 30 May. WAN Sensing Auto sensing Running  
08:02:06 30 May. WAN IPv6 Global unicast prefix / length:  
08:02:06 30 May. WAN IPv6 Global unicast address allocated:  
08:02:06 30 May. WAN DHCPv6 events: BOUND  
08:02:05 30 May. WAN DHCPv6 events: INIT  
08:02:05 30 May. NTP synchronization start  
08:02:05 30 May. WAN Sensing Auto sensing Complete interface selected
08:02:05 30 May. WAN Sensing Auto sensing Running  
08:02:05 30 May. Success - secondary DNS servers  
08:02:05 30 May. Success - primary DNS servers  
08:02:05 30 May. WAN connection WAN2_INTERNET_PTM connected  
08:02:04 30 May. PPP: IPCP up  
08:02:04 30 May. PPP IPCP Receive Configuration ACK  
08:02:04 30 May. PPP IPV6CP Receive Configuration ACK  
08:02:04 30 May. PPP IPCP Send Configuration Request  
08:02:04 30 May. PPP IPCP Receive Configuration NAK  
08:02:04 30 May. PPP IPCP Send Configuration ACK  
08:02:04 30 May. PPP IPCP Receive Configuration Request  
08:02:04 30 May. PPP IPV6CP Send Configuration ACK  
08:02:04 30 May. PPP IPV6CP Receive Configuration Request  
08:02:04 30 May. PPP IPV6CP Send Configuration Request  
08:02:03 30 May. PPP IPCP Send Configuration Request  
08:02:03 30 May. PPP: CHAP authentication succeeded  
08:02:03 30 May. PPP CHAP Receive success : authentication successful  
08:02:03 30 May. PPP CHAP Receive Challenge  
08:02:03 30 May. PPP: LCP up  
08:02:03 30 May. PPP LCP Receive Configuration ACK  
08:02:03 30 May. PPP LCP Send Configuration ACK  
08:02:03 30 May. PPP LCP Receive Configuration Request  
08:02:03 30 May. PPP LCP Send Configuration Request  
08:02:02 30 May. PPP: Received PADS  
08:02:02 30 May. PPP: Sending PADR  
08:02:02 30 May. PPP: Received PADO  
08:02:02 30 May. PPP: Sending PADI  
08:01:57 30 May. PPP: Sending PADI  
08:01:52 30 May. PPP: Sending PADI  
08:01:47 30 May. PPP: Sending PADI  
08:01:44 30 May. DSL Link Up: Down Rate=52620kbps Up Rate=9812kbps; SNR Margin Down=3.1dB Up=6.3dB
08:01:42 30 May. PPP: Sending PADI  
08:01:37 30 May. PPP: Starting PPP daemon  
08:01:36 30 May. WAN Auto-sensing detected port DSL WAN  
08:01:03 30 May. Has a problem to connect to SAAF framework (4 times)  
08:01:01 30 May. A device connected to Ethernet port 4  
08:01:01 30 May. Wire Lan Port 4 up Speed 100 Mbps
08:00:58 30 May. DHCP device Connected: 192.xxx.xxx.xxx xx:xx:xx:xx:xx:xx HUMAX
08:00:57 30 May. Booting firmware v0.26.04.04227-BT (Thu Apr 22 11:37:40 2021)  
08:00:57 30 May. System start Button press (PowerButton)  
08:00:57 30 May. DHCP lease issued 192.xxx.xxx.xxx to xx:xx:xx:xx:xx:xx HUMAX lease duration is 86400 seconds
08:00:57 30 May. System up  
08:00:57 30 May. ARP [add] br0(eth3) 192.xxx.xxx.xxx xx:xx:xx:xx:xx:xx  
08:00:56 30 May. LAN [ADD] ARP 192.xxx.xxx.xxx with xx:xx:xx:xx:xx:xx from br0(eth3)  
08:00:55 30 May. Receive a DHCP request  
08:00:49 30 May. Hub has activated against the device management system  
08:00:49 30 May.  2.4G WPS feature enabled  
08:00:49 30 May.  2.4G WPA2 mode selected  
08:00:49 30 May.  2.4G WiFi  DOWN  
08:00:49 30 May.  5G   WPS feature enabled  
08:00:49 30 May.  5G   WPA2 mode selected  
08:00:49 30 May.  5G   WiFi  UP  
08:00:41 30 May. WAN Auto-sensing last connection port: DSL WAN  
07:43:10 30 May. CWMP: HDM socket closed successfully.  
07:43:10 30 May. CWMP: HTTP authentication success from pbthdm.x.x.x  
07:42:31 30 May. CWMP: Session start now server: https://pbthdm.x.x.x Event code: 6 CONNECTION REQUEST
07:42:31 30 May. CWMP: Initializing transaction for event code 6 CONNECTION REQUEST  
02:00:01 30 May. DoS(UDP Loopback): IN=ppp1 OUT= MAC= src=xxx.xxx.xxx.xxx DST=xxx.xxx.xxx.xxx LEN=29 TOS=0x00 PREC=0x00 TTL=243 ID=54321 PROTO=UDP SPT=40569 DPT=19 LEN=9 MARK=0x8000000 
22:03:53 29 May. Receive a DHCP request  
21:21:55 29 May. CWMP: HDM socket closed successfully.  
17:13:24 29 May. CWMP: Session start now server: https://pbthdm.x.x.x Event code: 6 CONNECTION REQUEST

 


@imjollywrote:

 please can you post the stats from your router  if HH6/SH2 then advanced settings then technical log information . 

enter your phone number and post results  remember to delete number but leave exchange and cab

  https://www.broadbandchecker.btwholesale.com/#/ADSL

can you run btspeedtester with ethernet connection when download speed appears ok and then again when appears bad and post both set of results

it may be congestion and engineer visits will not fix that

Someone may then be able to offer help/assistance/suggestions to your problem


 

---------------------------------------------------------------
using Superfast Fibre 2 Unlimited with BT TV Box Pro (UHD/HDR).
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ozsat
Recognised Expert
400 Views
Message 4 of 6

Re: Broadband speed drops everynight - any ideas?

Speeds dropped to 19.5Mb/s since my first post this morning.

That Dos (UDP Lookup) is in the log again at 1000am  -  I wonder ??

Anyway - back to the Hub 6A now which allows me to config WiFi as I want it.

Speed was at 50.4Mb/s then - higher than normal.

---------------------------------------------------------------
using Superfast Fibre 2 Unlimited with BT TV Box Pro (UHD/HDR).
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ozsat
Recognised Expert
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Message 5 of 6

Re: Broadband speed drops everynight - any ideas?

On Sunday the speeds dropped at 2pm too - and same message in the event log.

Switched back to Hub6 which does not get those messages.

Overnight Sunday the speeds dropped again.

Dropped on Monday too as expected - at 11.55pm the speed was good and had dropped by 12.10am - so likely to be something that happens on the BT/OpenReach network at around midnight?

---------------------------------------------------------------
using Superfast Fibre 2 Unlimited with BT TV Box Pro (UHD/HDR).
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ozsat
Recognised Expert
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Message 6 of 6

Re: Broadband speed drops everynight - any ideas?

Well - Openreach back again and changed the port I was connected too.

My original speed was 48Mb/s - the new port is only giving 36Mb/s.

But worse - midnight was dropping my line to 19Mb/s but the new port drops to 9Mb/s.

This first occured again on the stroke of midnight.

It happens at other times too but is usually on the turn of the hour - so 10am, 2pm etc.

---------------------------------------------------------------
using Superfast Fibre 2 Unlimited with BT TV Box Pro (UHD/HDR).
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