How do I access node on subnet from node on primary network?

Question

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I want to reach a node on the subnet, e.g. 192.168.2.239, from a node on the primary, e.g. 192.168.1.2. Currently pinging from 192.168.1.2 to 192.168.2.239 gets no response. What do I need to set up in the definition of the bridge router?

Answer 1

You might not be able to have multiple subnets on the LAN side of these routers, they may only take two subnets, the WAN and one for the LAN. (unless perhaps one put DDWRT or Tomato on one of them, and not for bridge mode, but for additional router or VLAN switch functionality).

So if you then don't have multiple subnets on the LAN then two options are

1. You could make them all 192.168.1.x/255.255.255.0. So change the 192.168.2.x addresses to 192.168.1.x.

2. Or make the subnet 192.168.x.y/255.255.0.0. Then you can keep both the 192.168.1.x addresses and the 192.168.2.x addresses.

And by the way, those routers AFAIK even in router mode don’t have an IP on each LAN port/interface. So I don’t know why your Linksys which you’ve written in your diagram as being in bridge mode, can have an IP on each.

If it was in router mode it’d have an IP on the LAN side to access its web interface, but that’s not associated with any particular LAN port. And if it was in bridge mode then it probably wouldn’t have an IP for a web interface at all.

From my experience—and maybe Linksys is an exception to what I’ve seen—but when these NAT routers are in bridge mode they don’t have any IP and have to be reset and go into router mode to access the web interface.