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Weird B535 DHCP problem

Buggerlugz

ULTIMATE Member
I had an issue last week with my wifi devices connecting to the router perfectly but sporadically not allowing internet through. The issue appeared to come and go at random once or twice. Yesterday it didn't sort itself out. I've not changed any settings, 5ghz wifi is turned off (because I'm aware this can cause issues on devices that don't have 5ghz wifi), but apart from that everything is set as default.

Up until yesterday all WiFi connections in my home were done with the router via DHCP. The router assigns devices just fine and the routers web interface is accessible from the WiFi-devices. However no internet access comes through. In the router each device is issued the same local IP each time it connects, so I thought I'd see if I specified on the WiFi devices the same IP it'd work, and strangely it does work and allows internet through.

But if I just connect to the wifi by just putting the password in, it issues the very same IP but "no internet".

Any idea's people?
 

GavinAshford

ULTIMATE Member
Sounds more like a DNS assignment issue than IP address issue. What DNS server is shown on those devices when they are DHCPd?

When manually specifying the IP on the device I guess you also specify the DNS?

It's pretty normal for a device to be assigned the same IP each time (though it's not guaranteed).
 

Buggerlugz

ULTIMATE Member
Under ethernet settings in the B535 I have it set to "Set DNS manually" and its set to 1.1.1.1 for primary and 1.1.1.2. for secondary, but I've not touched this 6 months.

In the dhcp'd setting and when a device is set to ip manually it lists the DNS as the router IP. I don't have to specify a DNS when i set a device manually though.

Strange!
 

GavinAshford

ULTIMATE Member
Yeah that is strange, I'm not sure what it would pickup as the DNS if manually specified then, perhaps the gateway
 

Buggerlugz

ULTIMATE Member
I believe it was due to the power being off today (smart meter install) and the routers time hadn't sync'd so the DHCP lease's were off kilter.....if that makes sense?
 
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