Can we configure ASA5520 & ASA5525 in Active/Active mode?

[LAKSHMAN KUMAR SANAPALA]

Hi

One of our custmoer is having ASA5520 up and running. Now he is palnning to buy the one moer ASA5520 and configure in Active/Active mode.

Since ASA5520 is EOL, we are planning to suggest ASA5525. My question is will ASA5520 & ASA5525 can be configured as

Active/Active mode?

Thanks & Regards

Lakshman Kumar S

[Jouni Forss]

Hi,

For Failover to work the hardware/software should be identical. So you cant pair ASA5520 and ASA5525-X

Here is the section from the ASA Configuration Guide explaining the requirements for a Failover pair

http://www.cisco.com/en/US/docs/security/asa/asa84/configuration/guide/ha_overview.html#wp1077521

- Jouni

[Marvin Rhoads]

Not only should they be the same model, they MUST be.

If you try to configure failover between dissimilar models, the HA pair will fail to establish a failover cluster.

Also note that Active-Active is only achievable for multiple context setups. Single context (and any given context in a multi-context setup) can only be Active-Standby.