Cisco Cisco 2000 Series Wireless LAN Controller
3
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 3.2.116.21
OL-9542-01
New and Changed Information
Caution
Do not power down the controller or any access point during this process; otherwise, you might corrupt
the software image! Upgrading a controller with a large number of access points can take as long as 30
minutes. The access points must remain powered, and the controller must not be reset during this time.
the software image! Upgrading a controller with a large number of access points can take as long as 30
minutes. The access points must remain powered, and the controller must not be reset during this time.
Cisco recommends the following sequence when performing an upgrade:
1.
Upload your controller configuration files to a server to back them up.
2.
Turn off the controller 802.11a and 802.11b networks.
3.
Upgrade your controller to software release 3.2.116.21, following the instructions in the Cisco
Wireless LAN Controller Configuration Guide, Release 3.2. Click this link to browse to that
document:
Wireless LAN Controller Configuration Guide, Release 3.2. Click this link to browse to that
document:
4.
Re-enable your 802.11a and 802.11b networks.
Note
Controllers can be upgraded from one release to another. However, should you require a downgrade from
one release to another, you may be unable to use the higher release configuration. The workaround is to
reload the previous controller configuration files saved on the backup server or to reconfigure the
controller.
one release to another, you may be unable to use the higher release configuration. The workaround is to
reload the previous controller configuration files saved on the backup server or to reconfigure the
controller.
New and Changed Information
VPN Termination Module for the 4400 Series Controllers
A virtual private network (VPN) termination hardware module is being released for the 4400 series
controllers. As with the VPN termination module available today for the 4100 series controllers, this
module enables the 4400 series controllers to terminate VPN client sessions directly on the controller.
The module features these capabilities:
controllers. As with the VPN termination module available today for the 4100 series controllers, this
module enables the 4400 series controllers to terminate VPN client sessions directly on the controller.
The module features these capabilities:
•
Support for one VPN termination module on the 4402 controller and one or two VPN termination
modules on the 4404 controller
modules on the 4404 controller
•
On the 4404 controller, one ESM that is shared across both NPUs
•
Automatic load balancing across modules if two modules are installed for the 4404 controller
•
Retention of the client crypto state on the original crypto card when the client moves between access
points on different NPUs
points on different NPUs
•
Support for up to 1000 client VPN sessions per module
•
Up to 1 Gbps of encryption/decryption per module
•
Support for these IPsec clients: Cisco VPN Client, NetScreen Remote, SSH Sentinel, and Openswan