i have a asa5520 acting as the main firewall, and asa5510 acting as the backup firewall. if and when the 5520 goes down, i can turn it off and power up the 5510. (failover is not setup since 5510 does not support it).
aside from the obvious differences in interface names (e.g. on 5520, its call FastEthernet, but on 5510, its call Ethernet), can I simply take the config from the 5520, modify it so the 5510 will understand it (like replace FastEthernet with Ethernet in the config), then TFTP the modified config to 5510?
Will all the passwords continue to work?