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Standard User deanobaj
(newbie) Thu 11-Oct-18 10:56:43
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Re: Constant disconnects all week BT Fibre Draytek 2860n


[re: trolleybus] [link to this post]
 
Don't worry, I wont be downgrading the firmware. I read about the critical update some months ago so decided to upgrade back then. Would be interesting to know if it is the latest firmware causing the drop outs though. Oh, and the setting is configured to be 'Always on' so I'm guessing there is a problem with the Draytek or something up with the firmware.

Since plugging in the BT HG612 modem and then running that into the Draytek via the ethernet, internet has stayed on consistently and not dropped once. We'll probably purchase a new Draytek 2862, mainly as I'm familiar with these plus I can (apparently) restore the backup configuration from the 2860 to the 2862 which will save me a lot of time.

Thanks for all advice offered smile

Edited by deanobaj (Thu 11-Oct-18 11:18:45)

Standard User trolleybus
(experienced) Thu 11-Oct-18 15:53:36
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Re: Constant disconnects all week BT Fibre Draytek 2860n


[re: deanobaj] [link to this post]
 
In reply to a post by deanobaj:
Don't worry, I wont be downgrading the firmware. I read about the critical update some months ago so decided to upgrade back then. Would be interesting to know if it is the latest firmware causing the drop outs though. Oh, and the setting is configured to be 'Always on' so I'm guessing there is a problem with the Draytek or something up with the firmware.

Since plugging in the BT HG612 modem and then running that into the Draytek via the ethernet, internet has stayed on consistently and not dropped once. We'll probably purchase a new Draytek 2862, mainly as I'm familiar with these plus I can (apparently) restore the backup configuration from the 2860 to the 2862 which will save me a lot of time.

Thanks for all advice offered smile


The company I work for is spread across six geographical locations each using Draytek routers with most having a dual broadband service from different ISPs which may be any combination of TalkTalk, Zen, BT, Cloudscape and EE. You would expect the system up time to match the WAN1 and WAN2 up time, but at no site do we have that utopia situation and generally if you have dropouts, one broadband connection is rock solid with the other being less so.

I can only speculate the reasons for it and concluded it could be a local congestion problem and/or the backbone is not adequate. Services have been swapped over from modem to WAN2 on the Draytel unit with the less satisfactory service remaining the same. So the doggy service is given the elbow at contract end for another ISP and generally that resolves the issue.

Draytek firmware used:
Firmware Version: 3.8.9.3_BT DSL Version: 576D17_A/B/C HW: A

Currently most of the routers are Vigor2860Vac with the VoIP functionality specified to provide an ‘office’ phone for the end user. Enables me to call them for free! Voipfone is the provider
Standard User Smudger444
(newbie) Sat 13-Oct-18 06:44:49
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Re: Constant disconnects all week BT Fibre Draytek 2860n


[re: trolleybus] [link to this post]
 
I too have been using my Vigor 2860ac for two years plus, and from ADSL to VDSL ive not experienced any problems other than those caused by Openreach stretching the FTTC services in our area. Our provider is now TalkTalk who have been the best in our area.

Mind I have usually kept up to date with the changing firmware, Im using 3.8.9.1 Bt . The Draytek support has been excellent, who helped me diagnose Openreach Line problems.

Perhaps this would help :- https://www.draytek.co.uk/support/guides/kb-isp-talk...


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Standard User deanobaj
(newbie) Tue 16-Oct-18 14:18:30
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Re: Constant disconnects all week BT Fibre Draytek 2860n


[re: Smudger444] [link to this post]
 
Thanks - will have a look through the guide and see if Draytek can diagnose the problem smile

We've just had a new Draytek 2862Vac delivered so I'll get that connected and have our 2860n as a backup.
Standard User aquiss
(fountain of knowledge) Tue 16-Oct-18 17:43:25
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Re: Constant disconnects all week BT Fibre Draytek 2860n


[re: deanobaj] [link to this post]
 
Our advise with Draytek's is to lift the target SNR downstream margin from 3dB to 6dB.

Draytek's have never been too happy with lower SNR margins, within any of the recent firmware releases and do disconnect more than they should. Increase and they become very stable.

Martin Pitt
Aquiss Limited
http://www.aquiss.net

Unlimited Family Broadband Packages : http://www.aquiss.net/broadband-unlimited.php
Standard User Zarjaz
(eat-sleep-adslguide) Thu 18-Oct-18 08:44:11
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Re: Constant disconnects all week BT Fibre Draytek 2860n


[re: aquiss] [link to this post]
 
Aha ! Rather like the old Cisco routers on ADSL which wouldn’t hold/gain sync when DLM had shifted the target SNR down to 3db ?

Standard User deanobaj
(newbie) Thu 18-Oct-18 16:12:38
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Re: Constant disconnects all week BT Fibre Draytek 2860n


[re: aquiss] [link to this post]
 
I didnt actually know you could change the SNR margins so I'd like to give this a try to see if the line stabilises after adjusting..... I've found a guide on the Draytek site on how to do this - I'm assuming I'm on the right page?

https://www.draytek.com/en/faq/faq-connectivity/conn...

Any tips or advice before I make any permanent damage (if that's possible) ?
Standard User aquiss
(fountain of knowledge) Fri 19-Oct-18 09:22:50
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Re: Constant disconnects all week BT Fibre Draytek 2860n


[re: Zarjaz] [link to this post]
 
In reply to a post by Zarjaz:
Aha ! Rather like the old Cisco routers on ADSL which wouldn’t hold/gain sync when DLM had shifted the target SNR down to 3db ?


Yup, exactly. We are forever getting customers with Drayteks….stable lines for months...DLM "oh here, have another 3db on the house"...Draytek…."Oh thanks, but I do feel a bit light headed...ppp drop". Increase DLM....all is well...…….and repeat cycle LOL.

Martin Pitt
Aquiss Limited
http://www.aquiss.net

Unlimited Family Broadband Packages : http://www.aquiss.net/broadband-unlimited.php
Standard User aquiss
(fountain of knowledge) Fri 19-Oct-18 09:24:41
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Re: Constant disconnects all week BT Fibre Draytek 2860n


[re: deanobaj] [link to this post]
 
In reply to a post by deanobaj:
I'm assuming I'm on the right page?

https://www.draytek.com/en/faq/faq-connectivity/conn...


Yup that's correct. It's really easy, you don't need to worry about anything smile

Martin Pitt
Aquiss Limited
http://www.aquiss.net

Unlimited Family Broadband Packages : http://www.aquiss.net/broadband-unlimited.php
Standard User RobertoS
(elder) Fri 19-Oct-18 10:41:33
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Re: Constant disconnects all week BT Fibre Draytek 2860n


[re: aquiss] [link to this post]
 
Doesn’t this 3dB stability problem make rather a nonsense of having a Draytek? A 3dB rather than 6dB noise margin adds several Mbps to the throughput speed on FTTC.

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