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Azzieman
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Does the super hub 3 use different DNS?

Hello all,

I have an interesting question.

Does the SuperHub 3 use different DNS on 2.4Ghz and 5Ghz wifi signals?
Reason I ask is that my website loads fine on 2.4Ghz but the speed is really slow but doesn't resolve on 5Ghz where my speeds are much better? If I change my Laptops DNS to Google's when on 5Ghz my site loads. 
Also what is the TTL that Virgin Media have set?  As I set my Nameserver changes 2nd April at 12.36pm and I would have thought that your DNS would have cleared its cache by now,

Thanks

Aaron

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Tudor
Hero
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Message 2 of 20
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Re: Does the super hub 3 use different DNS?

If by nameserver changes you mean update to DNS they VM servers are rather on the slow side and can take up to 48 hours. If you do a search there is a very good post about DNS updates on this board. 


Tudor
There are 10 types of people: those who understand binary and those who don't and F people out of 10 who do not understand hexadecimal c1a2a285948293859940d9a49385a2
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Azzieman
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Message 3 of 20
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Re: Does the super hub 3 use different DNS?

OK so I set my nameservers changes on my website 2nd April 12.36pm. My site shows up on 2.4Ghz (although the speed is really slow) but does not show up on 5Ghz. Hence why I am asking the question.

 

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Very Insightful Person
Very Insightful Person
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Message 4 of 20
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Re: Does the super hub 3 use different DNS?

no there is no difference in settings or conenction between the 2

As a Very Insightful Person, I'm here to share my knowledge. I don't work for Virgin Media.

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Azzieman
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Message 5 of 20
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Re: Does the super hub 3 use different DNS?

Thank you, this is what I thought. Any ideas then why my website would show up on 2.4Ghz and not on 5Ghz?

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chenks
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Message 6 of 20
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Re: Does the super hub 3 use different DNS?

it's most likely not related to that, and it's something else that's causing the issue.
ignore the red herring and expand your investigations.
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Azzieman
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Message 7 of 20
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Re: Does the super hub 3 use different DNS?

Thank you.

believe me we have. I have had Linux engineers look at it and the issue is down to propagation. I wanted to know how long virgin media’s dns cache lasts for, so that maybe if that’s the issue, at least it will be resolved after the timers expire and it clears itself out.

just seems weird that it works on 2.4ghz and not 5ghz. 

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bromham
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Message 8 of 20
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Re: Does the super hub 3 use different DNS?

Have you actually checked whether the result of a DNS lookup on 2.4 GHz is different to the same DNS lookup on 5 GHz or are you assuming this?  If you're assuming that this is happening, you may find that doing an "nslookup" when connected on both frquencies may help you to narrow down what's actually happening.

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Azzieman
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Message 9 of 20
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Re: Does the super hub 3 use different DNS?

Hmm.. I get the same result on both:

Server: cache1.service.virginmedia.net
Address: 194.168.4.100

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.

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legacy1
Alessandro Volta
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Message 10 of 20
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Re: Does the super hub 3 use different DNS?

Would help to know the site?

Can you do
nslookup site name 194.168.8.100

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