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I have two subnets connected over a wireless bridge and I'm trying to figure out how to get them to talk to each other.

Subnet 1

  • Router: Netgear wireless
  • Router IP: 192.168.1.1
  • DHCP range: 192.168.1.2 - 192.168.1.254
  • Subnet mask: 255.255.255.0
  • Internet: Connected directly to cable modem

Subnet 2

  • Router: Linksys running dd-wrt
  • Router IP: 192.168.2.1
  • DHCP range: 192.168.2.2 - 192.168.2.254
  • Internet: Connected to the Netgear router via a wireless bridge
  • WAN IP: 192.168.1.10

When I'm on Subnet 1, I can't connect to anything on Subnet 2 (even the wireless bridge IP of 192.168.1.10).

When I'm on Subnet 2, I can connect to everything on 192.168.2.* as well as the Subnet 1 router on 192.168.1.1. But I can't connect to any other machines on Subnet 1.

The physical limitations of my house make the wireless bridge a requirement. I don't think making a wired connection between the two subnets is an option.

How can I set things up so machines on both subnets can communicate with each other and still get to the Internet?

  • You could set the subnet mask on all machines to 255.255.224.0 This way your host IP address range is 192.168.0.1 - 192.168.31.254, which includes both subnets you mention. – user421696 Jan 31 '16 at 14:21
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    Wired or wireless is just a medium, the "network" it carriers is mostly not relevant to the actual medium. If this is a wireless bridge, why is the second router providing DHCP and not just transparently passing the 192.168.1.0/24 network through? That would make this so much simpler, router one provides DHCP to everything, and router 2 just acts a bridge passing the wireless network to the wired ports. Sounds to me like this is misconfigured since this is a SOHO environment. – acejavelin Jan 31 '16 at 14:31
  • I tried changing the subnet at one point and it still wasn't working. Would I have to do anything in terms of setting the Gateway on Subnet 2 for that to work? – Mark Biek Jan 31 '16 at 14:31
  • I'll take a look and see about disabling the secondary DHCP and just making it all one big 192.168.1.0 network. – Mark Biek Jan 31 '16 at 14:32
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    Your router 2 is misconfigured, it should not be doing any router or DHCP functions, everything should be handled by router 1. Router 2 should be just a pass-though of the network. Everything should be one 192.168.1.0/24 subnet with a gateway of 192.168.1.1 – acejavelin Jan 31 '16 at 14:33
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Your setup is not a wireless bridge, just a way of using the wireless medium to carry a network connection to another router, the second "router" should be setup as a bridge to pass-thru all network traffic, making this all one subnet with one router handling all DHCP and routing functions for the entire LAN. This is called a Client-Bridge configuration and is a common DD-WRT application.

http://www.dd-wrt.com/wiki/index.php/Client_Bridged

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