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Catalyst 3750 SwitchSoftware Configuration Guide
OL-8550-09
APPENDIX
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Configuring the Catalyst 3750G Integrated

Wireless LAN Controller Switch

The Catalyst 3750G Integrated Wireless LAN Controller Switch is an integrated Catalyst 3750 switch
and Cisco 4400 series wireless LAN controller that supports up to 25 or 50 lightweight access points.
The switch and the internal controller run separate software versions, which must be upgraded
separately. Although the interaction between the switch and the controller is minimal, these software
images must be compatible for the wireless LAN controller switch to operate correctly. See the
Catalyst 3750 switch release notes for switch and controller software compatibility information.
Note When using the wireless LAN controller switch in a stack, you should load this image on all switches in
the stack. However, wireless capability is available only on the Catalyst 3750G Integrated Wireless LAN
Controller Switch.
The integrated controller runs software for the Cisco 4402 wireless controller. For information about the
controller software release, see the Release Notes for Cisco Wireless LAN Controllers and Lightweight
Access Point, Release 4.0.x.0. For controller software upgrade procedure, see the Cisco Wireless LAN
Controller Configuration Guide Release 4.0.
If the switch and controller software are not compatible, you need to upgrade or downgrade the software
so that they are compatible:
•When the Wireless LAN Control Protocol (WCP) version in the Catalyst 3750 image and the
controller image do not match, the switch generates syslog message. If the system still functions,
you should upgrade or downgrade software to synchronize the images.
•If WCP stops working, you can use the second console port on the switch to upgrade or downgrade
controller software. If WCP stops working, the switch resets the wireless LAN controller
approximately every 320 seconds.
This appendix contains information that applies to the software running on the switch, and describes
only features that are specific to the wireless LAN controller switch. For information about the switch
commands specific to the Catalyst 3750G switch, see the command reference for this release.
This appendix has these sections:
•Understanding the Wireless LAN Controller Switch, pageA-2
•Configuring the Wireless LAN Controller Switch, pageA-4
•Displaying Internal Wireless Controller Information, pageA-7