ASA5520 Failover Configuration - RAM difference

[Mahmoud Bakri]

Hi everyone ,

I would like to know if it's possible to configure Failover (active/standby) on 2 Firewalls that are Identical (everything is the same) except for the RAM memory , the first has 1 Gb and the other has 2 GB.

And Does anybody know what command should I use to view the RAM slots that were installed into my ASA firewalls as both Firewalls arent physically near me .

Thanks ,

[Rahul Govindan]

According to the Cisco documentation below:

Both devices in an ASA failover configuration (active-active and active-standby) must have the same RAM memory. Mixed-RAM devices in ASA failover configurations are not supported. 

http://www.cisco.com/c/en/us/products/collateral/security/asa-5500-series-next-generation-firewalls/product_bulletin_c25-586414.html

From the CLI, you can issue the show version | include RAM  command to see how much memory your ASA has:

ASA#

show version | include RAM

Hardware:   ASA5520, 512 MB RAM

, CPU Pentium 4 Celeron 2000 MHz

On ASDM, you can see the amount of RAM in the ASA from the ASDM Home (Device Dashboard) page.

[mvsheik123]

view the RAM slots:

Hi Mahmoud,

I suggest you schedule a downtime and check by opening chassis. There was issue that some ASAs shipped with 1DIMM slot only. See the below posting...

https://supportforums.cisco.com/discussion/10884711/asa5520-memory-upgrade#3413494

hth

MS