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next6exits
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Growing instances with regular loss of service

Hey guys, time I think to reach out. In the last few weeks and especially now in the last few days, I lose all throughput. On my desktop (work, wired, yesterday) I keep a ping -t going and today (laptop, wireless) I have experienced at least 4 incidents both times. Some last 2-3 mins, one yesterday was more like half an hour, and just had one on the laptop for about 15mins.

Everything is great, then I lose all internet connection. ping goes from nice and low and simple to a mix of destination unreachable and request timed out.

I;m on a ZyXel router - using the WAN with Hub2 in Modem only mode. I'm in GU1 Guildford area, never see anything about known outages. I have previously a LONG time ago had an engineer out (think we're talking NTL.....) and they gave me a 10db attenuator which I believe I was then told wasn't needed with the hub. For the hell of it I put it back on my wire midday yesterday after one of the outages - and got through the afternoon fine! Until the 4pm one which was the longest one yet.

I'm in Web dev so fairly IT savvy, rebooting, reseting, hard power downs - none of it has ANY impact on the situation I am absolutely sure. It always comes back by itself, no matter what...... what is also annoying is before this current router I went back to the Hub as wireless for awhile, and it's baffling why that network status/diagnostic info + ability to reset is not accessible in modem only mode!? So I can't provide those numbers...

Basically if this is now a problem that isnt going away and it bites Monday.. Tues.. it's going to badly affect my working day and just wondering what I can do either to try and log/diagnose further if it does or just get on and get an engineer booked...

Thanks for any info/help 😃

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next6exits
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Message 2 of 31
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Re: Growing instances with regular loss of service

and just like that 22:14 - here we go again........

Reply from 212.58.233.253: bytes=32 time=36ms TTL=52
Reply from 212.58.233.253: bytes=32 time=17ms TTL=52
Reply from 212.58.233.253: bytes=32 time=17ms TTL=52
Reply from 212.58.233.253: bytes=32 time=21ms TTL=52
Reply from 212.58.233.253: bytes=32 time=27ms TTL=52
Reply from 212.58.233.253: bytes=32 time=19ms TTL=52
Reply from 212.58.233.253: bytes=32 time=16ms TTL=52
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 81.108.190.77: Destination host unreachable.
Reply from 81.108.190.77: Destination host unreachable.
Reply from 81.108.190.77: Destination host unreachable.
Reply from 81.108.190.77: Destination host unreachable.
Request timed out.
Request timed out.
Request timed out.

etc etc... i sit it out touching nothing, can see this in my router log, relevant or not - unsure but relates to wan/dhcp and as it went down:

1 Apr 24 22:15:04 daemon debug dhcpd dnsmasq-dhcp: sendLeaseMessageToESMD esmd ret=1
2 Apr 24 22:15:04 daemon debug dhcpd dnsmasq-dhcp: sendLeaseMessageToESMD send to esmd buf = {\"ac\":\"add\",\"expire\":\"111331\",\"mac\":\"**:**:**:**:**:**\",\"ip\":\"192.168.1.126\",\"host\":\"7189412177716192072\",\"vendor\":\"*\",\"moui\":\"*\",\"serial\":\"*\",\"pclass\":\"*\",\"cid\":\"*\",\"ifname\":\"br0\"}
3 Apr 24 22:15:04 daemon info dhcpd dnsmasq-dhcp: sendLeaseMessageToESMD

then sit and await it coming back by itself...... 22:19 !

Reply from 81.108.190.77: Destination host unreachable.
Reply from 81.108.190.77: Destination host unreachable.
Reply from 81.108.190.77: Destination host unreachable.
Reply from 81.108.190.77: Destination host unreachable.
Reply from 81.108.190.77: Destination host unreachable.
Reply from 81.108.190.77: Destination host unreachable.
Reply from 212.58.233.253: bytes=32 time=28ms TTL=52
Reply from 212.58.233.253: bytes=32 time=17ms TTL=52
Reply from 212.58.233.253: bytes=32 time=18ms TTL=52
Reply from 212.58.233.253: bytes=32 time=16ms TTL=52
Reply from 212.58.233.253: bytes=32 time=16ms TTL=52
Reply from 212.58.233.253: bytes=32 time=16ms TTL=52
Reply from 212.58.233.253: bytes=32 time=17ms TTL=52
Reply from 212.58.233.253: bytes=32 time=16ms TTL=52
Reply from 212.58.233.253: bytes=32 time=16ms TTL=52
Reply from 212.58.233.253: bytes=32 time=16ms TTL=52
Reply from 212.58.233.253: bytes=32 time=27ms TTL=52

just reading a few messages back from "brianfantastic" on here - sounds eerily similar so going to look into the advice there next!

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next6exits
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Message 3 of 31
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Re: Growing instances with regular loss of service

following the advice in that other thread... sorted out:

https://www.thinkbroadband.com/broadband/monitoring/quality/share/2e33624ecc5c665ace6a18b8763ca11e204d78fb

exactly the sort of thing i was trying to find earlier! look forward to seeing what this shows... what I think i might do tho is power off in a bit and remove the attenuator given I've not had it in play potentially ever with the Hub2..... but maybe i'll do that in the morning.....

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next6exits
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Message 4 of 31
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Re: Growing instances with regular loss of service

also realised how to get to the info now - thanks to tehwolf on that other post...

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

Frequency (Hz)139000000147000000155000000163000000171000000179000000187000000195000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock)LockedLockedLockedLockedLockedLockedLockedLocked
Channel ID12345678
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)-2.35-2.10-1.92-2.06-2.28-2.37-2.34-2.43
RxMER (dB)37.9438.2637.9438.2638.2638.2638.2638.26
Pre RS Errors383358289302306296323299
Post RS Errors269287287297305284304299
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next6exits
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Message 5 of 31
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Re: Growing instances with regular loss of service

upstream

 US-1US-2US-3US-4Channel Type2.02.02.02.0Channel ID7586Frequency (Hz)46200000603000003940000053700000Ranging StatusSuccessSuccessSuccessSuccessModulation64QAM64QAM64QAM64QAMSymbol Rate (Sym/sec)5120000512000051200005120000Mini-Slot Size2222Power Level (dBmV)51.0051.0051.0051.00T1 Timeouts0000T2 Timeouts0000T3 Timeouts0000T4 Timeouts0000

24/04/2021 21:14:49 GMT24/04/2021 21:14:49 GMTCritical (3)82000200No Ranging Response received - T3 time-out
24/04/2021 21:14:49 GMT24/04/2021 21:14:49 GMTCritical (3)82000200No Ranging Response received - T3 time-out
24/04/2021 21:14:49 GMT24/04/2021 21:14:49 GMTCritical (3)82000200No Ranging Response received - T3 time-ou

x lots..........

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next6exits
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Message 6 of 31
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Re: Growing instances with regular loss of service

another blink out ... 2304

Request timed out.
Reply from 81.108.190.77: Destination host unreachable.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 81.108.190.77: Destination host unreachable.
Request timed out.
Reply from 81.108.190.77: Destination host unreachable.
Request timed out.
Reply from 81.108.190.77: Destination host unreachable.
Reply from 81.108.190.77: Destination host unreachable.
Request timed out.
Request timed out.
Reply from 212.58.233.253: bytes=32 time=148ms TTL=52
Request timed out.
Request timed out.
Request timed out.

just a snippet where i noted one ping randomly went thru!

DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8
Frequency (Hz) 139000000 147000000 155000000 163000000 171000000 179000000 187000000 195000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock) Locked Locked Locked Locked Locked Locked Locked Locked
Channel ID 1 2 3 4 5 6 7 8
Modulation 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM
Symbol Rate (Msym/sec) 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000
Interleave Depth 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 I=12
J=17
Power Level (dBmV) -7.74 -7.10 -6.60 -6.66 -6.50 -6.43 -6.47 -6.10
RxMER (dB) 35.42 36.17 36.17 36.39 36.84 36.61 37.09 37.09
Pre RS Errors 5413 3918 3631 3146 2356 2414 2023 2117
Post RS Errors 1720 1762 1464 1161 890 862 828 972

taken while "down" - can see those power level numbers have dropped a load.... still awaiting it come back alive... 23:14.

at 23:20 i tried to reload the 100.1 hub page and it just timed out?!?! so i decided at that point.. lets power down the hub and get rid of the damn attenuator now.....

23:24 - bringing hub back up...

DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8
Frequency (Hz) 139000000 147000000 155000000 163000000 171000000 179000000 187000000 195000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock) Locked Locked Locked Locked Locked Locked Locked Locked
Channel ID 1 2 3 4 5 6 7 8
Modulation 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM
Symbol Rate (Msym/sec) 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000
Interleave Depth 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 I=12
J=17
Power Level (dBmV) 8.77 8.78 9.33 9.48 8.87 8.51 8.75 9.14
RxMER (dB) 37.94 37.94 37.94 38.26 38.98 38.61 37.94 37.94
Pre RS Errors 306 286 284 279 283 291 289 300
Post RS Errors 305 285 284 279 282 291 289 300

so i'm learning something there, the 10db value seems to affect that power level.. anyway.. if these numbers are "better" then it's a little bit strange because i got 4 straight hours of perfect service yesterday using it, but yeah it's probably been blinking out more since that big one 4pm yester.

back to as it was before, then.. for now!

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next6exits
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Message 7 of 31
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Re: Growing instances with regular loss of service

so today has been fine... almost.. it went slightly shaky with some loss of ping replies for a few mins just around 16:45

at the time i grabbed this:

DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8
Frequency (Hz) 139000000 147000000 155000000 163000000 171000000 179000000 187000000 195000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock) Locked Locked Locked Locked Locked Locked Locked Locked
Channel ID 1 2 3 4 5 6 7 8
Modulation 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM
Symbol Rate (Msym/sec) 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000
Interleave Depth 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 I=12
J=17
Power Level (dBmV) 2.25 2.77 3.74 3.95 3.73 3.56 3.67 4.37
RxMER (dB) 36.17 36.39 36.84 37.09 37.36 36.84 37.09 37.94
Pre RS Errors 679351 454287 581482 616979 543790 922450 640206 377268
Post RS Errors 410688 337605 408702 351378 431727 657982 457371 291629

and now seeing that it's stabilised... they are all the same i think, but pasting in these two, as the DB vals have gone up 0.3 in most cases?!:

Power Level (dBmV)2.272.773.803.983.733.593.704.40

RxMER (dB)

36.1736.3936.8437.0937.3636.8437.0937.94

 

just wondering if these are any cause for concern or not really?? i'll continue to monitor things all week, perhaps last week was just some crazy misfortune with an issue in my neighbourhood and nothing more?!

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Paul_DN
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Message 8 of 31
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Re: Growing instances with regular loss of service

Hi next6exits,

 

Thank you for reaching back out to us in our community and welcome, we are sorry to hear you have been experiencing drop outs which have seemed to settle now.

 

I have had a look our end and cannot see any issues however as your Router is in Modem mode there is only so much we can see our end, if you would like us to do further checks we would need you to put our Router back in Router mode?

 

set up a free “Broadband Quality Monitor” to continually monitor the state of your connection and record any network dropouts. It does it 24/7/365 and it keeps a visual record of any/all of your network disconnections, useful data to have to match to the Network logs (in your Hub settings) and also in discussions with us. Make sure you uncheck the “ignore ping from WAN side” box in the settings if you see a wall of "red" - note it will take an hour or two to start seeing a sensible picture. please run this for 72 hours and post the results here so we can have a further look into this for you.

 

Kind regards

 

Paul.

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next6exits
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Message 9 of 31
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Re: Growing instances with regular loss of service

Hi Paul - thanks for the reply! It's been better this week but it's still notable that to use the garden pipe analogy, it's not a drop in pressure that you barely notice, but moments when someone completely kinks the pipe.. momentarily that's perhaps ok (if still a bit irritating) but at least this week it hasn't been more than a few mins at most. i'm back on here to find your reply because it was really bad from about 0908 - 0911 this morning, about 4-5 blips with complete package loss for 5-10 seconds, but has since stabilised...

I did start up the BQM but am indeed getting the wall of red, in Modem only mode I cant find the setting you mention and it has to be the same setting but within the router (Zyxel) and I can't locate anything I'd be happy to mess turning off/on or added!

At 0911 I reset the counter for the errors (which were all huge numbers) and this is the status just 10 mins later..

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

Frequency (Hz)139000000147000000155000000163000000171000000179000000187000000195000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock)LockedLockedLockedLockedLockedLockedLockedLocked
Channel ID12345678
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)5.665.756.316.485.995.655.816.29
RxMER (dB)37.6437.9437.9438.2638.2637.9437.9438.26
Pre RS Errors6501334230132495251523151026510
Post RS Errors863103810473976561344794271

should have pasted the rest of the number but I believe the DB numbers were all 2-3 and now they're immediately higher up in these last 10 mins... and everything is stable in the last 10!

Is this enough to at least suggest anything? Thanks! -jon

 

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lotharmat
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Message 10 of 31
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Re: Growing instances with regular loss of service

The PostRS errors would point to noise ingress on the circuit!

I'd say you need an engineer to look at the connections!



------------------------------------------------------------------
Hub 3 - Modem Mode - TP-Link Archer C7