Cisco Cisco Firepower Management Center 4000

Version 5.2.0.6

Sourcefire 3D System Release Notes

9

Updating Your Appliances

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.

Updating a Defense Center

Use the procedure in this section to update your Defense Centers, including 

virtual Defense Centers. For the Version 5.2.0.6 update, Defense Centers reboot.

Before you update the Defense Center, reapply access control 

policies to any managed devices. Otherwise, the subsequent update of managed 

devices may fail.

Do not reboot or shut down your appliances during the update until 

after you see the login prompt. The system may appear inactive during the 

pre-checks portion of the update; this is expected behavior and does not require 

you to reboot or shut down your appliances.

To update a Defense Center:

1. Read these release notes and complete any required pre-update tasks.

For more information, see 

 on page 2 and