Replace one ASA of a Cluster

Answered Question
Dec 9th, 2008

I have a cluster active/standby with two ASA5510 and I want to change one of them because one ASA5510 is damaged. Both have an CSC-SSM module. What I have to consider?

(License, Configuration, ...)

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Correct Answer by amritpatek about 7 years 12 months ago

In the failover configuration make sure that The two units in a failover configuration must have the same hardware configuration. They must be the same model, have the same number and types of interfaces, the same amount of RAM, and, for the ASA 5500 series security appliance, the same SSMs installed (if any).

The two units do not have to have the same size Flash memory. If 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.

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Correct Answer
amritpatek Mon, 12/15/2008 - 10:07

In the failover configuration make sure that The two units in a failover configuration must have the same hardware configuration. They must be the same model, have the same number and types of interfaces, the same amount of RAM, and, for the ASA 5500 series security appliance, the same SSMs installed (if any).

The two units do not have to have the same size Flash memory. If 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.

Marcus Hunold Tue, 12/16/2008 - 04:54

thx for answering.

What's happening with the CSC-SSM license key from the chrashed ASA5500 series? As I installed the CSC-SSM module i had to input the license keys. Now I have a new ASA5510 and I put in the CSC-SSM module from the crashed ASA5510.

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