topic Re: Slow internet - possible dns issue in Broadband

Slow internet - possible dns issue

grahamjenks — Tue, 06 Dec 2022 21:23:51 GMT

I am finding broadband across different devices very slow - specifically to initially connect to websites / services. I believe this may be an issue with router/Plusnet dns. When I change dns on a device to 1.1.1.1 - the issue does not occur - tested across laptop, iPhone and Xbox console. This Suggests that Plusnet dns set at router level is the problem. Tried factory resetting router with no luck - issue has been going on for 2-3 weeks at least. Does seem intermittent- and once connected to a website speeds to fine.

Re: Slow internet - possible dns issue

jab1 — Tue, 06 Dec 2022 21:45:32 GMT

@grahamjenks Welcome to the forums. What you suggest - DNS issues - is possible, but I think unlikely, otherwise there would be many more complaints. I'm not a network expert, but if you could give some examples, maybe some of the more experienced Community members could help - if they pick this up.

Re: Slow internet - possible dns issue

RPMozley — Wed, 07 Dec 2022 04:55:37 GMT

What is the router version and firmware number please?

Slow dns responses would indeed manifest in what you described as happening. Probably most likely slow from the router. To check this please set a device with PlusNet dns directly 212.159.13.49 and 212.159.13.50, see if slowness disappears.

Re: Slow internet - possible dns issue

grahamjenks — Wed, 07 Dec 2022 07:43:00 GMT

Thanks - its a Plusnet Hub One - details below.

DNS on the router is set as:

Primary DNS:	212.159.6.10
Secondary DNS:	212.159.6.9

As suggested if I try changing DNS on device to 212.159.6.10 and 212.159.6.9 - then speed seems to be fine - so it does appear to be router that is causing problems. Any suggestions on next steps - other than a new router?

Many thanks

1. Product name:	Plusnet Hub
2. Serial number:	+081441+NQ74418436
3. Firmware version:	Software version 4.7.5.1.83.8.237.2.2 Last updated Unknown
4. Board version:	Plusnet Hub One
5. DSL uptime:	18 days, 10:35:47
6. Data rate:	19999 / 73912
7. Maximum data rate:	28398 / 80804
8. Noise margin:	11.1 / 7.8
9. Line attenuation:	5.3 / 7.0
10. Signal attenuation:	5.0 / 7.0
11. Data sent/received:	70.9 GB / 403.9 GB
12. Broadband username:	grahamjenks@plusdsl.net
13. 2.4 GHz Wireless network/SSID:	PLUSNET-RCTG
14. 2.4 GHz Wireless connections:	Disabled
15. 2.4 GHz Wireless security:	WPA2
16. 2.4 GHz Wireless channel:	Automatic (Smart Wireless)
17. 5 GHz Wireless network/SSID:	PLUSNET-RCTG
18. 5 GHz Wireless connections:	Enabled (802.11 a/n/ac (up to 1300 Mb/s))
19. 5 GHz Wireless security:	WPA2
20. 5 GHz Wireless channel:	Automatic (Smart Wireless)
21. Firewall:	Default
22. MAC Address:	a0:39:ee:72:99:82
23. Modulation:	G.993.2 Annex B
24. Software variant:	AA
25. Boot loader:	1.0.0

Re: Slow internet - possible dns issue

jab1 — Wed, 07 Dec 2022 08:01:49 GMT

@grahamjenks Your Hub is way out of date, firmware-wise. Have you always had it connected and switched on? If so, it appears to have 'fallen off' the management platform, is too old to be updated and will have to be replaced.

@bobpullen ?

Re: Slow internet - possible dns issue

grahamjenks — Wed, 07 Dec 2022 08:57:48 GMT

Yes- its always on and connected - I've been using it since moving to Plusnet - I've not used any other router.

Re: Slow internet - possible dns issue

jab1 — Wed, 07 Dec 2022 09:15:47 GMT

In that case, you will have to wait until Bob Pullen, who I have tagged, picks this up.

Re: Slow internet - possible dns issue

Dan_the_Van — Wed, 07 Dec 2022 09:31:16 GMT

@grahamjenks

There is another option, if you are close to coming up to renewing your contract you could try phoning customer options on 0800 013 2632 and discuss your renewal discount and request a Hub Two for a cost of £6-99 p&p

Hub Two only has three LAN ports and it is not possible to split the wireless signal names, which may be important to you.

Re: Slow internet - possible dns issue

grahamjenks — Wed, 07 Dec 2022 10:28:46 GMT

Unfortunately only renewed in Jun this year, so have 13 month left.

I'll see if Bob comes back here -else will get in touch with Customer services to discuss options. Thanks all for prompt input.

Re: Slow internet - possible dns issue

grahamjenks — Tue, 13 Dec 2022 19:10:04 GMT

Router is definitely not receiving firmware updates. Tried another full factory reset but 6 days later still no luck.

@bobpullen are you able to help here?

Product name:	Plusnet Hub
2. Serial number:	+081441+NQ74418436
3. Firmware version:	Software version 4.7.5.1.83.8.237.2.2 Last updated Unknown
4. Board version:	Plusnet Hub One
5. DSL uptime:	6 days, 03:26:17
6. Data rate:	19999 / 73912
7. Maximum data rate:	28807 / 90176
8. Noise margin:	11.2 / 10.4
9. Line attenuation:	5.2 / 6.9
10. Signal attenuation:	5.1 / 6.9
11. Data sent/received:	24.3 GB / 132.3 GB
12. Broadband username:	grahamjenks@plusdsl.net
13. 2.4 GHz Wireless network/SSID:
14. 2.4 GHz Wireless connections:	Disabled
15. 2.4 GHz Wireless security:	WPA2
16. 2.4 GHz Wireless channel:	Automatic (Smart Wireless)
17. 5 GHz Wireless network/SSID:
18. 5 GHz Wireless connections:	Enabled (802.11 a/n/ac (up to 1300 Mb/s))
19. 5 GHz Wireless security:	WPA2
20. 5 GHz Wireless channel:	Automatic (Smart Wireless)
21. Firewall:	Default
22. MAC Address:	a0:39:ee:
23. Modulation:	G.993.2 Annex B
24. Software variant:	AA
25. Boot loader:	1.0.0

Re: Slow internet - possible dns issue

jab1 — Tue, 13 Dec 2022 19:13:07 GMT

@grahamjenks With f/w that old, it won't receive updates. I'll tag @bobpullen and if he sees this he may arrange a replacement for you.

Re: Slow internet - possible dns issue

bobpullen — Tue, 13 Dec 2022 19:19:08 GMT

@grahamjenks - a new router will be in the post tomorrow, however bear in mind that we're going into two consecutive days of Royal Mail strike activity.

Re: Slow internet - possible dns issue

grahamjenks — Tue, 13 Dec 2022 19:20:21 GMT

Excellent- thanks for quick response.

Re: Slow internet - possible dns issue

jab1 — Tue, 13 Dec 2022 19:23:49 GMT

@grahamjenks The fix should have been on Bobs post. 😉

Re: Slow internet - possible dns issue

ec2 — Thu, 19 Jan 2023 10:06:08 GMT

I may have the same issue. I've noticed intermittent lag for the last 6-9 months, which I'm fairly sure is not anything to do with wifi contention. Similar to the OP, I'm starting to wonder if it's a dns issue.

I can't find the full router technical info, but here's what you requested from the OP:

Plusnet Hub One | Software version 4.7.5.1.83.8.289.1.3 | Last updated 12/10/21

Primary DNS:

212.159.6.9

Secondary DNS:

212.159.6.10

Do you think a replacement router is the best solution?

Re: Slow internet - possible dns issue

jab1 — Thu, 19 Jan 2023 10:18:04 GMT

@ec2 In your case, a replacement Hub is not the answer - yours is the current model and is fully up-to-date, so your issue is different.

It would probably be a good idea to start your own topic, with the full details from that Hub page, obscuring your personal details.

Re: Slow internet - possible dns issue

Baldrick1 — Thu, 19 Jan 2023 10:20:05 GMT

@ec2 Welcome to the Community forums.

You have the latest firmware on your hub. The OP’s hub was changed because that device was of an age where it could not be updated.
Have you tried selecting the DNS resolvers in the device that is giving you issues? This bypasses those set in the hub. If you want help with this then let us know details of the device and the operating system in use.

Re: Slow internet - possible dns issue

ec2 — Thu, 19 Jan 2023 11:31:34 GMT

Thanks for ruling out the firmware.

The issue seems to be with all devices, so ideally looking for a solution that doesn't involve setting nameservers in each.

Re: Slow internet - possible dns issue

jab1 — Thu, 19 Jan 2023 11:42:55 GMT

@ec2 A fuller description of your issue may help. How are you determining/seeing this issue?

Re: Slow internet - possible dns issue

Baldrick1 — Thu, 19 Jan 2023 12:16:56 GMT

@ec2

The purpose of suggesting setting the DNS resolvers locally was not as a permanent fix but to see if this is your problem. It could easily be something else so this is a way to either confirm or eliminate DNS as being your issue.