We are using a Cisco 871 in our data center, which is setup as follows:
- FastEthernet0 port on the Cisco 871 (192.168.1.1) connects to an unmanaged switch, which is used to connect all of our LAN devices to the Cisco
- The WAN port on the Cisco connects to a LAN port on a non-Cisco router (192.168.2.1), and negotiates its IP address via DHCP
- The WAN port on the non-Cisco router has a LAN cable that connects to our ISP
- The Cisco 871 establishes a connection to the Internet via PPPoE
At present, we are able to ping the non-Cisco router from the Cisco router, but we are not able to ping the non-Cisco router from a device on the Cisco local LAN (192.168.1 subnet). I'm thinking that an ACL rule or static route needs to be in place on the Cisco in order to get this working, but I'm not exactly sure how to implement this. If anyone has any idea how this can be set up, it would be greatly appreciated.