Confirming ASA running configuration size

Confirm the size of your running configuration file to ensure it meets system requirements or limitations.

Use this procedure to determine if your ASA running configuration exceeds the 4.5 MB size limit by copying it to flash storage and examining the file properties.

Before you begin

Follow these steps to confirm the size of your running configuration file:

Procedure

Step 1

Access the ASA's command line interface in one of these ways:

  • Open a terminal window and log into your ASA using SSH. Elevate your privilege to "privileged EXEC" mode so you see the prompt with hostname#.

  • If you managed to get your ASA onboarded, open the Security Devices page, select the device you want to connect to, and click >_ Command Line Interface button in the Device Actions pane.

Step 2

At the prompt type copy running-config flash

Step 3

When prompted for the Source filename, don't type anything and press <Enter>

Step 4

When prompted for the destination filename, enter a name for the output file. After ASA copies the running configuration the file you specified, it returns you to the privileged EXEC prompt.

Step 5

At the prompt, type show flash

Step 6

Look in the length column. If your file is over 4718592 bytes, it is larger than 4.5 MB.

Here is a sample set of commands and output:

asa1# copy running-config flash
Source filename [running-config]? 
Destination filename [running-config]? running-config-output
Cryptochecksum: 725f4c1c 4adfb8a9 8b3e7a6d 49e3420d 
23648 bytes copied in 1.380 secs (23648 bytes/sec)
asa1# show flash
--#-- --length-- -----date/time------ path
 107 110325428 Feb 28 2019 15:41:42 asdm-8826067.bin
 122 5018592 Apr 30 2019 21:00:59 running-config-output
 111 102647808 Mar 12 2019 14:26:10 asa9-12-1-smp-k8.bin

You have successfully determined the size of your ASA running configuration file. Files over 4718592 bytes exceed the 4.5 MB limit.