Cisco Cisco Email Security Appliance X1070 User Guide
Chapter 15 System Administration
15-2
Cisco IronPort AsyncOS 7.5 for Email Configuration Guide
OL-25136-01
Upgrading AsyncOS
Before You Upgrade
Upgrading AsyncOS uses the following two step process:
Step 1
Configure the upgrade settings. You can configure settings that affect how the
Email Security appliance downloads the upgrade information. For example, you
can choose where to download the upgrade images from and more. For more
information, see
Email Security appliance downloads the upgrade information. For example, you
can choose where to download the upgrade images from and more. For more
information, see
Step 2
Upgrade AsyncOS. After you configure the upgrade settings, upgrade the version
of AsyncOS on the appliance. For more information see
of AsyncOS on the appliance. For more information see
.
As a best practice, Cisco recommends preparing for an upgrade by taking the
following steps:
following steps:
Step 1
Save the XML config file off-box.
Step 2
If you are using the Safelist/Blocklist feature, export the list off-box.
Step 3
Suspend all listeners. If you perform the upgrade from the CLI, use the
suspendlistener
command. If you perform the upgrade from the GUI, listener
suspension occurs automatically.
Step 4
Wait for the queue to empty. You can use the
workqueue
command to view the
number of messages in the work queue or the
rate
command in the CLI to monitor
the message throughput on your appliance.
Note
Re-enable the listeners post-upgrade.
Upgrading AsyncOS from the GUI
To upgrade AsyncOS after you have configured your update settings: