While trying to setup a new Linksys WRT3200 ACM router over the weekend I ran into a “Unexpected Error 2197” message while changing the router’s IP address.
I was looking to replace an existing router that was 192.168.0.1 internally instead of the 192.168.1.1 the Linksys router defaults to.
This popped up after I disabled DHCP and then changed the IP for the router and clicked Apply or OK.
After beating my head against a wall, I re-enabled DHCP, which let me edit it’s fields.
Changing the DHCP field to 192.168.0.100, then changing the IP address of the appliance worked just fine.
Apparently there is a check in place to ensure the internal IP address of the router is on the same subnet as the DHCP range – even if DHCP is disabled. Go Figure.