cisco ASA active/standby failover configration

[darkdesire.cisco]

HI Guys,

I have attached my network design. we have 2 DC( Active/stnaby) and both having different subnets.

I have concern about  failover and interface configuration. as these are in the different subnet what should be the interface IP address?

can you please review the diagram and provide me your inputs..I have taken 10.1.1.0/24 for primary Firewall and 10.1.2.0/24 for standby firewall. 

these subnet should be of inside interfaces.

For outside we can take 20.1.1.0/24 and 20.1.2.0/24.

Thanks for inputs. 

[joe19366]

that is not a valid active/standby design.

all firewall MUST be in the same subnet.

"failover" is a layer2 protocol and designed to monitor interfaces on peer firewalls in the SAME SUBNETS ONLY.

I suggest you read this 

http://www.cisco.com/c/en/us/td/docs/security/asa/asa91/configuration/general/asa_91_general_config/ha_failover.html#pgfId-1077543