Can ASA5500 and ASA5500-X be paired as active standby?

[marcelnjkoks]

Hi, looking at several migration scenarios at a customer, is it possible to have a 5512-X as primary firewall, with a 5510 as secondary in an active standby cluster (running the same license type)?

Thanks!

[Jouni Forss · Accepted solution]

Hi,

No, you cannot pair ASA firewall that are of different model

 Hardware Requirements 
 The two units in a failover configuration must be the same model, have  the same number and types of interfaces, the same SSMs installed (if  any), and the same RAM installed. 
 If you are using units with different flash memory sizes in your  failover configuration, make sure the unit with the smaller flash memory  has enough space to accommodate the software image files and the  configuration files. If it does not, configuration synchronization from  the unit with the larger flash memory to the unit with the smaller flash  memory will fail. 

Source:

http://www.cisco.com/en/US/docs/security/asa/asa84/configuration/guide/ha_overview.html#wp1132197

Please do remember to mark the reply as the correct answer if it answered your question.

Ask more if needed.

- Jouni

[marcelnjkoks]

Thanks for the swift reply!

Have searched many migration documents, didn;t find it.

Thanks!

[barry · Accepted solution]

Hi

No. Both members of a cluster must be identical hardware wise.

HTH

Barry Hesk

Intrinsic Network Solutions