Do I need an specific router to create a wireless subnet?

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I am planning to extent the scope of my router by using “AV500 Nano Powerline Adapter Starter Kit
plus a wireless adapter (or a wireless router such as TP-Link TL-WR702N which would create another wifi access from the ethernet cable in the other part of the house.

I want to use both wifi connections at the same time and I was wondering if this router or wifi adapter should be specific or I can use any.

Would I need to create a sub net? Can any router to it?



No, you do not need to create a subnet. You can if you will, but it makes your life more difficult.

The simplest solution is to add an Access Point, which will simply relay all DHCP requests to your router. This is cheap (simple component) and good, because then all of the machines in the LAN will be able to talk to each other without any problem.

You can also obtain the same configuration if you use a router with wireless capabilities instead of an AP. In this case, I suggest you turn off the DHCP server on the new router, because this will allow you once again to have a single subnet, with all machines being accessible to all machines in the LAN. This is a tad more expensive because the router is a more sophisticated component than an AP, but it allows you to configure different options in the future, should you wish to do so (the AP can only work as an AP).

Lastly, if you leave the DHCP server on in the new router, you will have a distinct subnet containing all components connected to the new router, which will be unable to communicate with the part of your LAN which is served by the first router. You can get around this limitation, but this requires more work.

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