Appendix; Upgrading Or Downgrading Your Ace Software; Overview Of Upgrading Ace Software - Cisco 4700M Administration Manual

Upgrading or Downgrading Your ACE Software

This appendix provides information to upgrade your Cisco Application Control Engine (ACE) module.
It contains the following major sections:
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Overview of Upgrading ACE Software

Your ACE comes preloaded with the operating system software. To take advantage of new features and
bug fixes, you can upgrade your ACE with a new version of software when it becomes available.
In the Admin context, you will use the copy command in Exec mode to manually install the software on
each ACE. After the software installation is finished, set the boot variable and configuration register to
autoboot the software image. Then, reload the appliances to load the new image.
To minimize any disruption to existing network traffic during a software upgrade or downgrade, deploy
your ACE appliances in a redundant configuration. For details about redundancy, see
Configuring Redundant
Software version A3(1.0) introduces hardware-assisted SSL (HTTPS) probes, for that reason, the ACE
Note
uses the all option for the default SSL version and uses the routing table (which may bypass the real
server IP address) to direct HTTPS probes to their destination regardless of whether you specify the
routed option or not in the ip address command. If you are using HTTPS probes in your A1(x)
configuration with the default SSL version (SSLv3) or without the routed option, you may observe that
your HTTPS probes behave differently with version A3(1.0). For more information about HTTPS
probes, see the Cisco 4700 Series Application Control Engine Appliance Server Load-Balancing
Configuration Guide.
OL-20823-01
Overview of Upgrading ACE Software
Prerequisites for Upgrading Your ACE
Performing Software Upgrades and Downgrades
Displaying Software Image Information
ACEs.
Cisco 4700 Series Application Control Engine Appliance Administration Guide
A P P E N D I X
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Chapter 6,
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