Specifications

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Cisco Internet Streamer CDS 2.0-2.3 Software Configuration Guide
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Chapter 8 Maintaining the Internet Streamer CDS
Software Upgrade
The software file that you want to use is now registered with the CDSM. When you perform the software
upgrade or downgrade, the URL that you just registered becomes one of the choices available in the
Update Software page. (See the “Upgrading the Software” section on page 8-6.)
Upgrading the Software
When upgrading software in your CDS network, begin with Service Engines and Service Routers before
upgrading the CDSM. The CDSM reboots at the conclusion of the upgrade procedure, causing you to
temporarily lose contact with the device and the user interface. After the CDSM has upgraded its
software and rebooted, it may be unable to communicate with devices running different versions of the
CDS software.
Caution Primary and standby CDSMs must be running the same version of CDS software. If they are not, the
standby CDSM detects this and will not process any configuration updates it receives from the primary
CDSM. You need to upgrade your standby CDSM first, and then upgrade your primary CDSM. We also
recommend that you create a database backup for the primary CDSM and copy the database backup file
to a safe place before you upgrade the software.
Note For software downgrades, you need to do the following:
1. If you are using the CDSM GUI, downgrade the standby CDSM first, followed by the primary
CDSM.
If you are using the CLI, downgrade the primary CDSM first , followed by the standby CDSM.
2. After downgrading the primary and standby CDSMs, using the CLI, log in to each CDSM and run
the following commands:
cms database downgrade
cms enable
3. Downgrade the software on the Service Routers, followed by the Service Engines.
Caution To upgrade the software image on a server, you first need to offload a server for maintenance. Once the
server has been fully off loaded, you can upgrade the software. After updating the software, uncheck the
Server Offload check box to allow the server to receive client requests from the Service Router. See the
Server Offload field in Table 4-2 on page 4-8 for more information.
Interoperability Considerations
In general, a CDS network will be upgraded gradually, so that your network might consist of nodes with
different software versions for some time. You can expect the following behavior during an upgrade or
downgrade of your network:
• The CDS network continues to operate with mixed versions up to one major or minor version
difference in a deployed solution.
• New features that depend on device cooperation might not be fully functional until the CDS network
upgrade is complete, but no existing features will be affected.