Cisco Cisco 2106 Wireless LAN Controller 發佈版本通知
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Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 5.0.148.0
OL-31336-01
Important Notes
Access points can no longer join the controller if you attempt to use the restricted 802.11 bands in these
countries. For a complete list of the current regulatory rules, refer to the Wireless LAN Compliance Status
document at this URL:
countries. For a complete list of the current regulatory rules, refer to the Wireless LAN Compliance Status
document at this URL:
Supporting Oversized Access Point Images
Controller software release 4.2 or later allows you to upgrade to an oversized access point image by
automatically deleting the recovery image to create sufficient space. This feature affects only access
points with 8 MB of flash (the 1100, 1200, and 1310 series access points). All newer access points have
a larger flash size than 8 MB.
automatically deleting the recovery image to create sufficient space. This feature affects only access
points with 8 MB of flash (the 1100, 1200, and 1310 series access points). All newer access points have
a larger flash size than 8 MB.
Note
As of August 2007, there are no oversized access point images, but as new features are added, the access
point image size will continue to grow.
point image size will continue to grow.
The recovery image provides a backup image that can be used if an access point power-cycles during an
image upgrade. The best way to avoid the need for access point recovery is to prevent an access point
from power-cycling during a system upgrade. If a power-cycle occurs during an upgrade to an oversized
access point image, you can recover the access point using the TFTP recovery procedure.
image upgrade. The best way to avoid the need for access point recovery is to prevent an access point
from power-cycling during a system upgrade. If a power-cycle occurs during an upgrade to an oversized
access point image, you can recover the access point using the TFTP recovery procedure.
Follow these steps to perform the TFTP recovery procedure.
Step 1
Download the required recovery image from Cisco.com (c1100-rcvk9w8-mx, c1200-rcvk9w8-mx, or
c1310-rcvk9w8-mx) and install it in the root directory of your TFTP server.
c1310-rcvk9w8-mx) and install it in the root directory of your TFTP server.
Step 2
Connect the TFTP server to the same subnet as the target access point and power-cycle the access point.
The access point boots from the TFTP image and then joins the controller to download the oversized
access point image and complete the upgrade procedure.
The access point boots from the TFTP image and then joins the controller to download the oversized
access point image and complete the upgrade procedure.
Step 3
After the access point has been recovered, you may remove the TFTP server.
Multicast Limitations
Multicast applications have known performance limitations on the 2100 series controllers and the Cisco
Wireless LAN Controller Network Module for Cisco Integrated Services Routers. Cisco is working to
address these limitations in a future production code release. In the meantime, Cisco recommends that
you use the 4400 series or WiSM controllers for multicast intensive applications.
Wireless LAN Controller Network Module for Cisco Integrated Services Routers. Cisco is working to
address these limitations in a future production code release. In the meantime, Cisco recommends that
you use the 4400 series or WiSM controllers for multicast intensive applications.
Note
Multicast is not supported on access points that are connected directly to the local port of a 2100 series
controller.
controller.