Cisco Cisco Email Security Appliance C170

If a cluster includes C160, C360, C660, or X1060 hardware appliances, remove these appliances from 
the cluster before upgrading. 

All machines in a cluster must be running the same version of AsyncOS, and x60 hardware cannot be 
upgraded to this release. If necessary, create a separate cluster for your x60 appliances. 

If you are upgrading from a major (AsyncOS X.0) or minor (AsyncOS X.x) release other than the release 
immediately preceding this release, you should review the Release Notes for major and minor releases 
between your current release and this release. 

Maintenance releases (AsyncOS X.x.x) include only bug fixes. 

Cisco does not generally support the backward compatibility of configuration files with previous major 
releases. Minor release support is provided. Configuration files from previous versions may work with 
later releases; however, they may require modification to load. Check with Cisco Customer Support if 
you have any questions about configuration file support. 

Review the 

 and 

.

If you are upgrading a virtual appliance, see 

Use the following instructions to upgrade your Email Security appliance.

Save the XML configuration file off the appliance. 

If you are using the Safelist/Blocklist feature, export the Safelist/Blocklist database off the appliance. 

Suspend all listeners.

Wait for the queue to empty.

From the System Administration tab, select the System Upgrade page. 

Click the Available Upgrades button. The page refreshes with a list of available AsyncOS upgrade 
versions.

Click the Begin Upgrade button and your upgrade will begin. Answer the questions as they appear.

When the upgrade is complete, click the Reboot Now button to reboot your appliance. 

Resume all listeners.

Review the