Two routers on different subnets

Ok im just experimenting. I have two routers on different subnets.

Router 1 is and connected to the internet via WAN port.

Router 2 is and its WAN port is connected to the other routers LAN port.

The computers on router2 can obviously access the computers on router1 as they are routed out the WAN port.

The computers on router1 cannot access router2, due to being on a different subnet and only being connected to the LAN port correct ?
5 answers Last reply
More about routers subnets
  1. Yes,
    You can still connect to computers on router 1 if you setup static IP. Then connect using the IP address. Then save a short cut.

    Or set up in the same subnet and set the dhcp so they don't conflict.
  2. Hmm so basically packets cannot be sent from router1 to router2 because they are not on the same subnet correct ?

    But yet packets can be sent from router2 to router1 as it is routing packets through its WAN port ?
  3. If you are needing to expand ports, just a connect lan to lan. I have done what you are trying to do, wan to lan. I had to do a static IP Setup. including gateway and DNS. You can add them manually, and get it to work. It simpler swapping out the router to an 8 port or add switch to you existing.
  4. Wait, isn't this the 'domain' of the Subnet Mask? I'm no expert, but communicating between these two subnets essentially changes the Class from C to B. (Traditionally with private IP addresses from 172.16.###.###-172.31.###.###). Wouldn't changing the subnet mask to in both routers open up the network for any computer on the LAN with a 192.168.###.### address to consider any other computer (on the LAN) with a 192.168.###.### address to be on the same network ... and therefore allow 'visibility'?
  5. No because 192.168.x.x is still a class C address even if you change the subnet mask. You can have the same subnet mask on two networks but change the IP addresses in order to keep the networks seperate. (i.e. 192.168.x.x is not a class B it is a class C so is 172.16.x.x however two machines, one with 192 and one with 172 can not communicate) neither can one machine with 192.168.1.x and the other with 192.168.2.x these are two separate networks.
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