TP LINK VR2800 issuing odd IP address

Hi,

I have a TP link VR2800 Wifi modem/router in the loft connected to Plusnet FTTC.

Plusnet connection is rock solid.

Network is simple using DHCP with the Gateway IP set as 192.168.1.1, I use 8.8.8.8 as the DNS server.

I have some wired devices on a LAN, I also have some TP link (Wifi ) Powerline devices to extend the range of Wifi, I have made all the SSID the same as the router.

Pretty straight forward, however some phones/laptops in the house lose connection to the internet (not the router).

When I look, they have another IP address for the gateway/DNS server ie 192.168.1.118 (this may change at random) , which is another IP address in the DHCP range. (100 to 199). And its not always that IP but a random one in the range.

Where is this coming from ? Any ideas ?

Thanks in advance

In reply to a post by TheBaron:

Hi,

I have a TP link VR2800 Wifi modem/router in the loft connected to Plusnet FTTC.

Plusnet connection is rock solid.

Network is simple using DHCP with the Gateway IP set as 192.168.1.1, I use 8.8.8.8 as the DNS server.

I have some wired devices on a LAN, I also have some TP link (Wifi ) Powerline devices to extend the range of Wifi, I have made all the SSID the same as the router.

Pretty straight forward, however some phones/laptops in the house lose connection to the internet (not the router).

When I look, they have another IP address for the gateway/DNS server ie 192.168.1.118 (this may change at random) , which is another IP address in the DHCP range. (100 to 199). And its not always that IP but a random one in the range.

Where is this coming from ? Any ideas ?

Thanks in advance

The IP of the Powerline device to which they are connected?

In reply to a post by TheBaron:

Where is this coming from ? Any ideas ?

Sounds as if you have another device running DHCP server. Perhaps one of the power line devices. Check their settings for DHCP and turn it off. Only the VR2800 should have DHCP enabled.

Is your powerline networking encrypted (I don't mean just the Wi-Fi part)?
Otherwise there is a non-zero chance that neighbours can be connected if also happen to be using powerline.

The suggestion of a rogue DHCP server in your network is the most likely but these are not mutually exclusive possibilities.

Thanks. A bit of googling TP link powerline and DHCP and I hit this thread

TP Link Powerline DHCP problems

So there is a 'hidden' DHCP server in these plugs, I'll try the firmware update. Not really noticed these problems until we had 5 of us working from home !

I'm thinking now of adding an access point EAP 265HD instead.

Or is that overkill ? Around 10 Wifi devices floating around the house.


Thanks All