ASA 5525-X Hardware Specs Clarification

Answered Question
Aug 21st, 2012

I have a 5525-X Running in production and I have a couple clarification questions:

1.) Quad Core: Only ever see a single core with load

2.) Memory: Shows 8GB but only shows 4GB (I can only assume that 4GB is used as system member and the other half ram drive maybe?)                  

I have this problem too.
0 votes
Correct Answer by varrao about 1 year 8 months ago

Hi Ethan,

In the ASA 5525-X, the memory is divided between your ASA and IPS, as are all the other resources.

ASA and IPS share system resources such as CPU, RAM, and Flash, CPU and RAM are
statically allocated and are not configurable There are totally 4 CPU cores, where 1 CPU core is statically allocated to ASA software
module, while 3 CPU cores are statically allocated to IPS software module There is 8GB of RAM memory, 4GB are statically allocated to ASA and 4GB are statically
allocated to IPS.

If you enable the IPS license, you would see the memory and RAM allocated to the IPS as well.

An output of "show version" would also  tell you that the ASA is allocated 1 CPU core.

Thanks,
Varun Rao
Security Team,
Cisco TAC

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Marcin Latosiewicz Tue, 08/21/2012 - 07:16

Ethan,

Currently CPU and memory are staically divided between ASA and IPS.

The division depends on hardware.

in case of 5525 1 core is assigned to ASA and 3 to IPS, the mem is divided 50/50.

M.

Correct Answer
varrao Tue, 08/21/2012 - 07:31

Hi Ethan,

In the ASA 5525-X, the memory is divided between your ASA and IPS, as are all the other resources.

ASA and IPS share system resources such as CPU, RAM, and Flash, CPU and RAM are
statically allocated and are not configurable There are totally 4 CPU cores, where 1 CPU core is statically allocated to ASA software
module, while 3 CPU cores are statically allocated to IPS software module There is 8GB of RAM memory, 4GB are statically allocated to ASA and 4GB are statically
allocated to IPS.

If you enable the IPS license, you would see the memory and RAM allocated to the IPS as well.

An output of "show version" would also  tell you that the ASA is allocated 1 CPU core.

Thanks,
Varun Rao
Security Team,
Cisco TAC

EthanCarter Tue, 08/21/2012 - 07:44

Perfect thanks!

I was reading a few others forums where they were saying "Knowing Cisco they will make you buy more licenses to get get access to the additional Memory and Processing Power" made me think oh sh*t

Perfect Answer

plotniku7 Wed, 04/24/2013 - 08:38

Hi Varun Rao
so, i will not be able to use the other three cores.

i do not use IPS or CX modules.

so, halth of my ram and 3 parts of the CPU will not be utilized. very bad.

is it possible to confgiure the redistribution of the CPU?

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Posted August 21, 2012 at 6:46 AM
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