Cisco Cisco Firepower Management Center 4000 Release Notes

Version 5.2.0.5

Sourcefire 3D System Release Notes

Updating Your Appliances

applies it to the secondary device, which goes into maintenance mode until any

necessary processes restart and the device is processing traffic again. The

system then applies the update to the primary device, which follows the same

process.

Installing the Update on Stacked Devices

When you install an update on stacked devices, the system performs the updates

simultaneously. Each device resumes normal operation when the update

completes. Note that:

•

If the primary device completes the update before all of the secondary

devices, the stack operates in a limited, mixed-version state until all devices

have completed the update.

•

If the primary device completes the upgrade after all of the secondary

devices, the stack resumes normal operation when the update completes

on the primary device.

Installing the Update on Clustered Stacks

When you install an update on a clustered stack, the system performs the update

one stack at a time. When the update starts, the system first applies it to the

secondary stack, which goes into maintenance mode until any necessary

processes restart and the stack is processing traffic again. The system then

applies the update to the primary stack, which follows the same process.

After the Installation

After you perform the update on either the Defense Center or managed devices,

you must reapply device configuration and access control policies. Applying an

access control policy may cause a short pause in traffic flow and processing, and

may also cause a few packets to pass uninspected. For more information, see the

Sourcefire 3D System User Guide.
There are several additional post-update steps you should take to ensure that

your deployment is performing properly. These include:

•

verifying that the update succeeded

•

making sure that all appliances in your deployment are communicating

successfully

•

updating your vulnerability database (VDB), if necessary

The next sections include detailed instructions not only on performing the update,

but also on completing any post-update steps. Make sure you complete all of the

listed tasks.