Using 2 Wireless Routers... Some questions???

Discussion in 'Networking Issues' started by kjmcdonald, Dec 8, 2009.

  1. kjmcdonald

    kjmcdonald Network Guru Member

    Hi all,

    I've got a WRT54GS running DD-WRT mega, and I recently I had to move it to a new location in my house. Now the coverage isn't so hot in other areas. I have another WRT54G(S maybe - can't remember) and I was thinking of adding is as just an AP. I have 3 wireless clients (2 laptops, 1 iPod Touch), and many wired clients. I'd like the laptops and iPod to be able to seamlessly move around and pick the best AP available to them. Is this possible?

    The new AP will be wired to the first using one of the LAN ports not the WAN port, since I don't want the firewall between them, and don't need a new subnet. Also DHCP will only be on on the 1st Router.

    I have a few questions:

    1) Should I set both to the same or different channel?

    2) Should I set both to the same or different SSID?

    3) Do I need to do any thing special to get the 2nd Router to send it's DHCP request out the LAN port and not the WAN port?

    4) Anything else I should know or do?


  2. kjmcdonald

    kjmcdonald Network Guru Member

    No Advice?

    I've got the device wired up and working. But I'm still not sure what the right answers are to the questions above about configuring the channel and the SSID?

    Also I see a option on the setup -> basic setup tab, in the WAN port tab to "Assign WAN Port to Switch". What does this do? I enabled it and haven't noticed anything different.

    Since I have 4 devices, and don't need the WAN connection on this router, I was hoping it would turn the WAN port to a LAN port so I can use it as a 5 port switch? It doesn't seem to work that way.

    Is this doable?

  3. snesar

    snesar Addicted to LI Member

    Hello Kyle,
    I have done somethin similar, but I do not have worked on the exact equipment you are using. Anyways, in general, here is what I think:
    - You should use different channels on the 2 devices to avoid co-channel interference. Best to use 1 & 6, 6 & 11, or 1 & 11 (depending on other signals in your vicinity). Do a servey first
    - You can use same SSID, but using different wouldnt hurt either. The clients should connect to the AP with better RSSI/CINR
    - On the second router (which you want to use as AP only), turn the DHCP off
    - One the router with DHCP, make sure that on teh DHCP range, you do not use all the address. Define the range so that you have some set aside of static ones
    - On the static section in the router with DHCP, assign an IP address (outside the range of DHCP) to the MAC address of the router which you want to use as AP
    - On the AP only router (after setting up channel & SSID & security), assign it the same IP address as you assigned on the DHCP router
    - Once done, connect one of teh LAN ports of teh AP only router to one of the LAN ports of the DHCP router. The AP only device should not have anything connected to its WAN port
    - Once physical connection is done and IP address setup correctly, connect a client using LAN and make sure that you can ping the AP only device from either devices
    - Now you have 1 DHCP, 1 subnet, and one device working as AP only. All the DHCP discover & requests should be forwarded to main router

    I beleive (without having exact knowledge of your equipment) that "assign WAN port to switch" might be an option to use any port as WAN port (I know that managed switches allow to do that). If that is correct, make sure that you do not assign the LAN port on the AP only device as WAN port.

    Hoep it helps, and I understood your questions correctly​
  4. kjmcdonald

    kjmcdonald Network Guru Member

    Cool. Thanks for the advice.

    As for the WAN port option I'm not sure what it does, from what I can tell it does nothing.
    Oh well, I'm good for now with only 3 devices.

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