Примечания к выпуску для Cisco Cisco 2106 Wireless LAN Controller
11
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 5.1.151.0
OL-31336-01
New Features
New Features
The following new features are available in controller software release 5.1.151.0.
Note
Refer to the Cisco Wireless LAN Controller Configuration Guide, Release 5.1 for more details and
configuration instructions.
configuration instructions.
Controller Platform Changes
•
The 2100 series controllers can now support up to 6, 12, or 25 lightweight access points. Previously,
these controllers could support a maximum of 6 access points.
these controllers could support a maximum of 6 access points.
Note
All client connections to the 2100 series controllers are limited to the 10/100 Ethernet uplink
port connection between the switch and the controller, even though their connection speeds
might be higher. The exception is for access points running in local hybrid-REAP mode
because this traffic is switched at the access point level and not forwarded back to the
controller.
port connection between the switch and the controller, even though their connection speeds
might be higher. The exception is for access points running in local hybrid-REAP mode
because this traffic is switched at the access point level and not forwarded back to the
controller.
Note
The 2112 and 2125 controllers are supported for use with only software release 5.1.151.0 or
later.
later.
•
The controller network module within the Cisco 28/37/38xx Series Integrated Services Router can
now support up to 6, 8, 12, or 25 access points (and up to 256, 256, 350, or 350 clients, respectively),
depending on the version of the network module. The network module supports these access points
through a Fast Ethernet distribution system port (on the NM-AIR-WLC6-K9 6-access-point version)
or a Gigabit Ethernet distribution system port (on the 8-, 12-, and 25-access-point versions and on
the NME-AIR-WLC6-K9 6-access-point version) that connects the router and the integrated
controller. Previously, these modules could support a maximum of 12 access points, and only the
NM-AIR-WLC6-K9 6-access-point Fast Ethernet version was available.
now support up to 6, 8, 12, or 25 access points (and up to 256, 256, 350, or 350 clients, respectively),
depending on the version of the network module. The network module supports these access points
through a Fast Ethernet distribution system port (on the NM-AIR-WLC6-K9 6-access-point version)
or a Gigabit Ethernet distribution system port (on the 8-, 12-, and 25-access-point versions and on
the NME-AIR-WLC6-K9 6-access-point version) that connects the router and the integrated
controller. Previously, these modules could support a maximum of 12 access points, and only the
NM-AIR-WLC6-K9 6-access-point Fast Ethernet version was available.
New Controller Features
•
40-MHz channelization—In controller software releases prior to 5.1.151.0, only radios using
20-MHz channelization are supported by dynamic channel assignment (DCA). In controller
software release 5.1.151.0, DCA is extended to support 802.11n 40-MHz channels in the 5-GHz
band. 40-MHz channelization allows radios to achieve higher instantaneous data rates (potentially
2.25 times higher than 20-MHz channels).
20-MHz channelization are supported by dynamic channel assignment (DCA). In controller
software release 5.1.151.0, DCA is extended to support 802.11n 40-MHz channels in the 5-GHz
band. 40-MHz channelization allows radios to achieve higher instantaneous data rates (potentially
2.25 times higher than 20-MHz channels).
Note
Radios using 40-MHz channelization in the 2.4-GHz band are not supported by DCA.
You can override the globally configured DCA channel width setting by statically configuring an
access point’s radio for 20- or 40-MHz mode on the 802.11a/n Cisco APs > Configure page. If you
ever then change the static RF channel assignment method to Global on the access point radio, the
global DCA configuration overrides the channel width configuration that the access point was
previously using.
access point’s radio for 20- or 40-MHz mode on the 802.11a/n Cisco APs > Configure page. If you
ever then change the static RF channel assignment method to Global on the access point radio, the
global DCA configuration overrides the channel width configuration that the access point was
previously using.