文档介绍：Release Notes for the Catalyst 3750, 3560, 2975,
and 2960 Switches, Cisco IOS Release (52)SE
Revised November 20, 2009
Cisco IOS Release (52)SE runs on all Catalyst 3750, 3560, 2975, and 2960 switches and on Cisco
EtherSwitch service modules.
The Catalyst 3750 switches and the Cisco EtherSwitch service modules support stacking through Cisco
StackWise technology. The Catalyst 3560, 2975, and 2960 switches do not support switch stacking.
Unless otherwise noted, the term switch refers to a standalone switch and to a switch stack.
These release notes include important information about Cisco IOS Release (52)SE and later and
any limitations, restrictions, and caveats that apply to the releases. Verify that these release notes are
correct for your switch:
• If you are installing a new switch, see the Cisco IOS release label on the rear panel of your switch.
• If your switch is on, use the show version privileged mand. See the “Finding the
Software Version and Feature Set” section on page 7.
• If you are upgrading to a new release, see the software upgrade filename for the software version.
See the “Deciding Which Files to Use” section on page 8.
For plete list of Catalyst 3750, 3560, 2975, and 2960 switch documentation and of Cisco
EtherSwitch service module documentation, see the “Related Documentation” section on page 64.
You can download the switch software from this site (registered users with a login password):
ayashi/sw-center/sw-
This software release is part of a special release of Cisco IOS software that is not released on the same
maintenance cycle that is used for other platforms. As maintenance releases and future software releases
e available, they will be posted to in the Cisco IOS software area.
Americas Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
© 2009 Cisco Systems, Inc. All rights reserved.
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This information is in the release