I have an existing Cisco ASA 5520 configured with a /28 subnet on the outside interface. My hosting provider just provided me with a new non-adjacent /28 subnet which is routed to the outside interface on my ASA.
Here is the current IP configuration
1.1.1.145 --> ISP Gateway
1.1.1.146 --> ISP Reserved
1.1.1.147 --> ISP Reserved
1.1.1.148 --> Primary ASA Outside Int
1.1.1.149 --> Secondary ASA Outside Int
1.1.1.150 - 1.1.1.158 --> Usable IPs
2.2.2.240 - 2.2.2.254 --> New Subnet, Routed to 1.1.1.148
I've tried to create a NAT on the ASA using the 2.2.2.240 IP but that doesn't seem to work. From what I can understand, I may need to add a route on the ASA, but I'm not sure what I should add.
Should it be something like
route Outside 2.2.2.240 255.255.255.240 1.1.1.148 1