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noakes
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Broadband speed reduced to 2Mb!

Hi

I've had problems for some time with slow speed on my 100Mb broadband. Its now got to the point where its dropped to between 2 and 4 MB especially in the evenings which I presume looks like network congestion.

Latest speed test results (slightly better this morning!) are:

Download Speed: 3946 kbps (493.3 KB/sec transfer rate)
Upload Speed: 2247 kbps (280.9 KB/sec transfer rate)
Latency: 320 ms
Jitter: 58 ms
2/5/2017, 11:22:30 AM

I've copied the logs from the router below, there does appear to be several errors in the network log, any help would be welcome....

Thank you

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

Frequency (Hz)291000000251000000259000000267000000275000000283000000299000000307000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock)LockedLockedLockedLockedLockedLockedLockedLocked
Channel ID5449505152535556
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)-3.34-2.18-2.54-2.70-2.75-2.99-3.72-4.11
RxMER (dB)35.2535.2534.9334.9335.4235.4235.2535.25
Pre RS Errors308883941848489558541166789831967324382
Post RS Errors309279283921905269954988

 

Upstream   US-1 US-2 US-3 US-4

Channel Type2.0N/AN/A2.0
Channel ID2N/AN/A3
Frequency (Hz)39400000N/AN/A32600000
Ranging StatusSuccessOtherOtherSuccess
Modulation64QAMN/AN/A64QAM
Symbol Rate (Sym/sec)5120000N/AN/A5120000
Mini-Slot Size4N/AN/A4
Power Level (dBmV)49.50N/AN/A49.00
T1 Timeouts0000
T2 Timeouts0000
T3 Timeouts0003
T4 Timeouts0000

 

Network Log

First TimeLast TimePriorityError NumberDescription
04/02/2017 09:09:09 GMT04/02/2017 09:09:09 GMTNotice (6)68010600DHCP Renew - lease parameters tftp file-******** modified
04/02/2017 09:09:09 GMT04/02/2017 09:09:09 GMTError (4)68010400DHCP REBIND WARNING - Field invalid in response
04/02/2017 09:08:13 GMT04/02/2017 09:08:13 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
04/02/2017 09:07:20 GMT04/02/2017 09:07:20 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
04/02/2017 09:05:32 GMT04/02/2017 09:05:32 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
04/02/2017 09:01:55 GMT04/02/2017 09:01:55 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
04/02/2017 08:54:44 GMT04/02/2017 08:54:44 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
04/02/2017 08:40:22 GMT04/02/2017 08:40:22 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
04/02/2017 08:11:37 GMT04/02/2017 08:11:37 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
04/02/2017 07:14:07 GMT04/02/2017 07:14:07 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
04/02/2017 05:19:07 GMT04/02/2017 05:19:07 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
04/02/2017 01:29:06 GMT04/02/2017 01:29:06 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
03/02/2017 17:49:04 GMT03/02/2017 17:49:04 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
03/02/2017 02:29:01 GMT03/02/2017 02:29:01 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
02/02/2017 19:58:50 GMT02/02/2017 19:58:50 GMTCritical (3)82000200No Ranging Response received - T3 time-out
02/02/2017 19:58:48 GMT02/02/2017 19:58:48 GMTCritical (3)82000200No Ranging Response received - T3 time-out
29/01/2017 10:01:54 GMT29/01/2017 10:01:54 GMTNotice (6)68010600DHCP Renew - lease parameters tftp file-******** modified
29/01/2017 10:01:54 GMT29/01/2017 10:01:54 GMTError (4)68010400DHCP REBIND WARNING - Field invalid in response
29/01/2017 10:01:19 GMT29/01/2017 10:01:19 GMTError (4)68010100DHCP RENEW sent - No response for IPv4
29/01/2017 10:00:46 GMT29/01/2017 10:00:46 GMTError (4)68010100DHCP RENEW sent - No response for IPv4

 

 

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Dave_cq
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Re: Broadband speed reduced to 2Mb!

Hi noakes,

Well your Downstream power levels are really quite low albeit still technically within specification and your Signal to Noise ratio is pretty marginal too so could be a noisy connection.  On the Upstream side the power levels are also within spec but they are at the high end.  I'd say your hub is struggling a bit with those levels and you are probably suffering evening time over-utilisation as well.  An engineers visit should be able to sort your power levels out.

Ignore the DHCP 'errors' in the log, they are not relevant to the issue.

 

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

Electron
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Dave_cq
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Re: Broadband speed reduced to 2Mb!

A further thought, you might find it interesting to set up a Broadband Quality Monitor (BQM) for your WAN IP and just leave it running.  You will need to set your hub's menu to accept pings.  The BQM will be a good indicator of just how noisy your connection is.   http://www.thinkbroadband.com/ping/monitors.html

I have one permanently running as it takes a tiny amount of bandwidth and is a good indication of problems developing in your area such as a new neighbour's installation gone wrong and introducing latency into the local network.

 

 

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

Electron
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noakes
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Re: Broadband speed reduced to 2Mb!

Hey Dave thanks for all your help. I've just found out phone line is really noisy as well, while I realise that takes a separate route to the exchange it might be an indication of something amiss on our feed. Will try the monitor as well , thanks

Roy
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