topic Re: Migrate MultiContext ASA 5545 with failover to ASA 1140 (in multic in Network Security

Migrate MultiContext ASA 5545 with failover to ASA 1140 (in multicont)

SamsonOjo — Mon, 29 Sep 2025 15:47:43 GMT

I need help and info migrating our Cisco ASA 5545 multi-context firewall (with failover) to ASA 1140 (in multi-context and failover). I have the config of the admin context and the 4 other contexts of the ASA 5545 saved in my tftp server and also in text files on my laptop. So, how do I copy the configs from the ASA 5545 to the ASA 1140 successfully? Thanks for your anticipated advice.

Re: Migrate MultiContext ASA 5545 with failover to ASA 1140 (in multic

Rob Ingram — Mon, 29 Sep 2025 17:38:00 GMT

@SamsonOjo copy the cfg files from the 5545 to the 1140 hardware. Setup the system context, create the admin and other four contexts and define the "config-url" that points to the existing configuration file (that you copied from the 5545) and allocate interfaces - You may need to amend the interfaces, if there differ between different hardware. Example:-

context admin
 config-url disk0:/admin.cfg

Re: Migrate MultiContext ASA 5545 with failover to ASA 1140 (in multic

SamsonOjo — Mon, 29 Sep 2025 17:56:43 GMT

@Rob Ingram Thanks for your assistance. So, you mean copy each context of the 5545 ASA firewall (there are 5 contexts in the 5545, including the admin context) and paste it in the config-url disk0:/admin.cfg of the ASA 1140?

Re: Migrate MultiContext ASA 5545 with failover to ASA 1140 (in multic

Rob Ingram — Mon, 29 Sep 2025 18:08:59 GMT

@SamsonOjo no, each context will have it's own configuration file, copy all five of them to the new hardware and reference in the applicable context.

Example:-

context admin
  config-url disk0:/admin.cfg
!
context ONE
  allocate-interface Ethernet0.100
  allocate-interface Ethernet1
  config-url disk0:/one.cfg
!
context TWO
  allocate-interface Ethernet0.200
  allocate-interface Ethernet1
  config-url disk0:/two.cfg

Re: Migrate MultiContext ASA 5545 with failover to ASA 1140 (in multic

SamsonOjo — Mon, 29 Sep 2025 19:16:51 GMT

Ok, thanks. Can I leave the port-channel the same? The port-channel is very important to the connected devices.

Re: Migrate MultiContext ASA 5545 with failover to ASA 1140 (in multic

Rob Ingram — Mon, 29 Sep 2025 19:21:19 GMT

@SamsonOjo yeah I see no reason why not. Just configure/allocate the interfaces and assign to the context, aswell as load the old configuration from the files you copied between appliances.