Cisco Cisco IOS Software Release 12.2(35)SE

CMS is not forward-compatible on command switches running Cisco Release IOS 12.1(14)EA1 and 
earlier. This means that if a member switch is running a release that is earlier than the release running 
on the command switch, the new features are not available on the member switch. If the member switch 
is a new device running a release that is later than the release on the command switch, the command 
switch cannot recognize the member switch, and the Front Panel view displays it as an unknown device. 
You cannot configure any parameters or generate a report through CMS for that member; instead, you 
must launch the Device Manager application to configure and to obtain reports for that member.

If you have a cluster with switches that are running different versions of Cisco IOS software, features 
added on the latest release might not be reflected on switches running the older releases. For example, 
if you start CMS on a Catalyst 2900 XL switch running Cisco IOS Release 11.2(8)SA6, the windows 
and functionality can be different from a switch running Cisco IOS Release 12.0(5)WC(1) or later.

Some early Cisco IOS releases do not support clustering. 

For more information about clustering and CMS, refer to the software configuration guide. 

These are the procedures for downloading software. Before downloading software, read this section for 
important information:

The Cisco IOS image is stored as a .bin file in a directory that is named with the Cisco IOS release. A 
subdirectory contains the files needed for web management. The image is stored on the system board 
flash device (flash:).

You can use the show version privileged EXEC command to see the software version that is running on 
your switch. The second line of the display shows the version.

Catalyst 3500 XL

12.0(5.1)XU or later

Member or command switch

Catalyst 2900 XL (8-MB switches)

12.0(5.1)XU or later

Member or command switch

Catalyst 2900 XL (4-MB switches)

11.2(8.5)SA6 (recommended)

Member switch only

1

Catalyst 1900 and 2820

9.00(-A or -EN) or later

Member switch only

1.

Catalyst 2900 XL (4-MB) switches appear in the front-panel and topology views of the CMS. However, CMS does not support 
the configuration or the monitoring of these switches.