To provide an example of bridging, we'll use pfSense to bridge two interfaces—LAN and OPT1. We will also assume that there are downstream routers, and to prevent looping, we will run RSTP on the bridged interfaces. In this case, LAN1 will be the main interface and OPT1 will be the bridged interface. Assume that the LAN interface has an IP address of 172.16.1.1 and a subnet of 172.16.0.0, and that the DHCP server is running on LAN.
To begin, we navigate to Services | DHCP Server and disable DHCP on OPT1. To do this, we uncheck the Enable checkbox, and click on the Save button. Now we can create our bridge. To do so, we navigate to Interfaces | (assign) and click on the Bridges tab. We click on the Add button on that page to ...
