Примечания к выпуску для Cisco Cisco 2106 Wireless LAN Controller
10
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 4.2.61.0
OL-31336-01
New Features
Controller Platform Changes
•
The Catalyst 6500 series switch chassis can now support up to six Cisco WiSMs (rather than five)
without any other service module installed. If one or more service modules are installed, the chassis
can support up to a maximum of four service modules (WiSMs included).
without any other service module installed. If one or more service modules are installed, the chassis
can support up to a maximum of four service modules (WiSMs included).
•
The Cisco 7600 series router can support up to six Cisco WiSMs without any other service module
installed. The integrated Cisco 7600 router and two Cisco 4404 controllers support up to 300
lightweight access points.
installed. The integrated Cisco 7600 router and two Cisco 4404 controllers support up to 300
lightweight access points.
Note
The WiSM is supported on Cisco 7600 series routers running only Cisco IOS Release
12.2(18)SXF5 or later.
12.2(18)SXF5 or later.
New Controller Features
•
7920 and 7921 co-existence—Because 7921 phones support WMM and 7920 phones do not,
capacity and voice quality problems can arise if you do not properly configure both phones when
they are used in a mixed environment. To enable both 7921 and 7920 phones to co-exist on the same
network, make sure that load-based CAC and 7920 AP CAC are both enabled on the controller and
the WMM Policy is set to Allowed.
capacity and voice quality problems can arise if you do not properly configure both phones when
they are used in a mixed environment. To enable both 7921 and 7920 phones to co-exist on the same
network, make sure that load-based CAC and 7920 AP CAC are both enabled on the controller and
the WMM Policy is set to Allowed.
•
802.11n support—You can now configure the controller to manage 802.11n devices such as the
Cisco Aironet 1250 Series Access Points. The 802.11n devices support the 2.4- and 5-GHz bands
and offer high-throughput data rates. You can use the controller GUI or CLI to enable or disable
802.11n mode and to set the modulation and coding scheme (MCS) rates at which data can be
transmitted between the access point and the client. By default, 802.11n mode and all of the MCS
data rates are enabled. You can also use the CLI to convert the channel bandwidth for 802.11n access
points from 20 MHz to 40 MHz and to specify the aggregation method used for 802.11n packets.
Cisco Aironet 1250 Series Access Points. The 802.11n devices support the 2.4- and 5-GHz bands
and offer high-throughput data rates. You can use the controller GUI or CLI to enable or disable
802.11n mode and to set the modulation and coding scheme (MCS) rates at which data can be
transmitted between the access point and the client. By default, 802.11n mode and all of the MCS
data rates are enabled. You can also use the CLI to convert the channel bandwidth for 802.11n access
points from 20 MHz to 40 MHz and to specify the aggregation method used for 802.11n packets.
Note
The 802.11n high-throughput rates are available only on 1250 series access points for
WLANs with no Layer 2 encryption or with WPA2/AES encryption enabled.
WLANs with no Layer 2 encryption or with WPA2/AES encryption enabled.
•
Access control list (ACL) counters—ACL counters can assist in determining which ACLs were
applied to packets transmitted through the controller. This feature is useful when troubleshooting
your system.
applied to packets transmitted through the controller. This feature is useful when troubleshooting
your system.
Note
ACL counters are available only on the following controllers: 4400 series, Cisco WiSM, and
Catalyst 3750G Integrated Wireless LAN Controller Switch.
Catalyst 3750G Integrated Wireless LAN Controller Switch.
•
Access point join process—To better troubleshoot issues with access points that fail to join a
controller, you can now configure the access points to send all LWAPP-related errors to a syslog
server. You can then view join-related information for all access points that have attempted to join
the controller.
controller, you can now configure the access points to send all LWAPP-related errors to a syslog
server. You can then view join-related information for all access points that have attempted to join
the controller.
•
Backup controller support for access points to fail over to controllers outside the mobility
group—A single controller at a centralized location can act as a backup for access points when they
lose the primary controller in the local region. Centralized and regional controllers need not be in
the same mobility group. Using the controller CLI, you can specify a primary, secondary, and
tertiary controller for your network’s access points. In controller software release 4.2.61.0, you can
group—A single controller at a centralized location can act as a backup for access points when they
lose the primary controller in the local region. Centralized and regional controllers need not be in
the same mobility group. Using the controller CLI, you can specify a primary, secondary, and
tertiary controller for your network’s access points. In controller software release 4.2.61.0, you can