I want to add a redundant interface to my Cisco ASA 5510. The management interface is currently using Ethernet0/1 (10.1.25.254/24) one of the interface I want to use for the redundant interfaces. So I wanted to setup Management0/0 as the new management interface. The other interface I want to use is Ethernet0/2 (10.1.0.254/24) for the redundant interface. The Ethernet0/3 (10.1.251.5/24) interface is not going to be part of the redundant interface.

I gave the Management0/0 an IP address of 10.1.254.5, and was able to connect a win7 box to Management0/0 and use 10.1.254.5 as a gateway; and ping another address on the (10.1.251.0/24) network, but I can't ping the interface (10.1.254.5) itself. I also can't use ASDM/SSH to log onto the ASA at 10.1.254.5.

I setup rules in Configuration > Device Management > Management Access > ASDM/HTTPS/Telnet/SSH. That look like the original rules for the Ethernet0/1 interface.

The last thing I can think to try would be to change the Configuration > Device Management >Management Access > Management Interface. I'm a bit nervous about changing it, the description of it is a bit vague. What it's going to do if I change it? What is the correct way to change a management interface?