Add a static route on the main router to router destination IP subnet 192.168.2.0, subnet 255.255.255.0 to gateway IP address 192.168.1.2 on the LAN/Wireless interface. That's it. Now all computers in either subnet should be able to ping all computers on their IP addresses.

How to Set Static IP Addresses On Your Router Jul 10, 2017 Building a Small Network with Static Routing - dummies To illustrate static routing the example will be a small network with two routers and two workstations, with the workstations placed on the far ends of the network. On it, the routers are configured so that the FastEthernet 0/0 (fa0/0) interfaces are for the computer side of the network and the FastEthernet 0/1 (fa0/1) interfaces […]

Nov 23, 2017

For example, the following route table has a static route to an internet gateway, and a propagated route to a virtual private gateway. Both routes have a destination of 172.31.0.0/24. In this case, all traffic destined for 172.31.0.0 Setting up a Static Route? - Linksys Community

May 20, 2018

Configuring a Second Router on a Static Network - dummies The following code does two things. First, it enables routing on the router, which is necessary even to have routing on the two-segment network (this is not a default setting; you must instruct a router to route when there is more than one interface). Second, it adds a route to the 192.168.5.0 network segment (see Figure 4-2 for an illustration).