Cisco Cisco Email Security Appliance X1050 Notas de publicación
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Release Notes for Cisco AsyncOS 8.5 for Email
Upgrade Paths
From version 8.0 onwards, AsyncOS for Email is a 64-bit software. As a result of this changed memory
model, the threshold values are revised in this release. Appliance enters resource conservation mode
when the RAM utilization exceeds 45% and the allowed injection rate is gradually decreased as RAM
utilization approaches 60%. This change does not affect the memory utilization on the appliance and all
the components in the appliance continue to use the memory as earlier.
model, the threshold values are revised in this release. Appliance enters resource conservation mode
when the RAM utilization exceeds 45% and the allowed injection rate is gradually decreased as RAM
utilization approaches 60%. This change does not affect the memory utilization on the appliance and all
the components in the appliance continue to use the memory as earlier.
Caution
Appliances with large memory utilization, especially with large system quarantine, can enter resource
conservation immediately after upgrading to AsyncOS 8.5 for Email. To avoid this scenario, make sure
that you reduce the system quarantine to a few thousand messages before upgrading.
conservation immediately after upgrading to AsyncOS 8.5 for Email. To avoid this scenario, make sure
that you reduce the system quarantine to a few thousand messages before upgrading.
Upgrade Paths
You can upgrade to release 8.5.0-473 from the following versions:
•
7.6.3-019
•
7.8.0-360
•
8.0.1-023
To ensure a successful upgrade, you must complete some steps before you start the upgrade process. For
details on these prerequisites, see
details on these prerequisites, see
.
Installation and Upgrade Notes
Read through and consider the installation and upgrade impacts listed in this section.
When you upgrade AsyncOS for Email from the web interface or Command Line Interface (CLI), the
configuration is saved to file in the /configuration/upgrade directory. You can access the upgrade
directory using an FTP client. Each configuration file name is appended with the version number, and
passwords in the configuration file are masked so they are not human readable.
configuration is saved to file in the /configuration/upgrade directory. You can access the upgrade
directory using an FTP client. Each configuration file name is appended with the version number, and
passwords in the configuration file are masked so they are not human readable.
You must be logged in as the admin to upgrade. Also, you must reboot the appliance after upgrading.
Deploying a Virtual Appliance
If you are deploying a virtual appliance, see the Cisco Content Security Virtual Appliance Installation
Guide.
Guide.
If you are switching from a physical appliance to a virtual appliance, you will need to convert your
configuration file to an AsyncOS 8.0 virtual appliance configuration file. For information, see the
Release Notes for Configuration Migration Tool 1.0 for Cisco Content Security Virtual Appliances. You
can import the AsyncOS 8.0 virtual appliance configuration file into a virtual appliance running
AsyncOS 8.5.
configuration file to an AsyncOS 8.0 virtual appliance configuration file. For information, see the
Release Notes for Configuration Migration Tool 1.0 for Cisco Content Security Virtual Appliances. You
can import the AsyncOS 8.0 virtual appliance configuration file into a virtual appliance running
AsyncOS 8.5.
Provisioning and Activating Cisco Registered Envelope Service Administrator from Virtual
Appliances
Appliances
Please contact Cisco TAC for information required to provision your virtual appliance.