Примечания к выпуску для Cisco Cisco 2106 Wireless LAN Controller
4
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 6.0.202.0
OL-31336-01
New Features
New Features
The following new features are available in controller software release 6.0.202.0.
CLI to disable AMSDU per Priority
With WPA2-AES enabled, sometimes a frame following an aggregated A-MSDU frame, has corrupted
PN sequence number. Source MAC address seems to be directly encoded in the place of PN sequence
number. This leads to decrypt errors on the client side and dropping of phone calls. This issue was seen
with third party 11n phones and is common to all 11n clients. Disabling AMSDU for Voice priority
solves the problem.
PN sequence number. Source MAC address seems to be directly encoded in the place of PN sequence
number. This leads to decrypt errors on the client side and dropping of phone calls. This issue was seen
with third party 11n phones and is common to all 11n clients. Disabling AMSDU for Voice priority
solves the problem.
To specify the aggregation method used for 802.11n packets, use the
config 802.11{a | b} 11nsupport a-msdu tx priority {0-7 | all} {enable | disable} command.
config 802.11{a | b} 11nsupport a-msdu tx priority {0-7 | all} {enable | disable} command.
The config 802.11a 11nSupport rifs rx enable command is used to enable the RIFS. By default, the
RIFS is enabled. This means that the RIFS Rx is enabled but the Polycom WAR is disabled. Hence
Polycom 11n phones have some problem (receiver gets stuck for 100 ms).
RIFS is enabled. This means that the RIFS Rx is enabled but the Polycom WAR is disabled. Hence
Polycom 11n phones have some problem (receiver gets stuck for 100 ms).
If you disable RIFS using the config 802.11a 11nSupport rifs rx disable command, RIFS Rx is disabled
(non-compliance with standard) but the WAR is applied which resolves the receiver stuck issue. This is
recommended only when the Polycom 11n phones are displayed.
(non-compliance with standard) but the WAR is applied which resolves the receiver stuck issue. This is
recommended only when the Polycom 11n phones are displayed.
To display the A-MSDU and RIFS priority information, use the show 802.11 {a | b} command.
> show 802.11a
802.11a Network.................................. Enabled
11nSupport....................................... Enabled
802.11a Low Band........................... Enabled
802.11a Mid Band........................... Enabled
802.11a High Band.......................... Enabled
802.11a Operational Rates
802.11a 6M Rate.............................. Mandatory
802.11a 9M Rate.............................. Supported
802.11a 12M Rate............................. Mandatory
802.11a 18M Rate............................. Supported
802.11a 24M Rate............................. Mandatory
802.11a 36M Rate............................. Supported
802.11a 48M Rate............................. Supported
802.11a 54M Rate............................. Supported
802.11n MCS Settings:
MCS 0........................................ Supported
MCS 1........................................ Supported
MCS 2........................................ Supported
MCS 3........................................ Supported
MCS 4........................................ Supported
MCS 5........................................ Supported
MCS 6........................................ Supported
MCS 7........................................ Supported
MCS 8........................................ Supported
MCS 9........................................ Supported
MCS 10....................................... Supported
MCS 11....................................... Supported
MCS 12....................................... Supported
MCS 13....................................... Supported
MCS 14....................................... Supported
MCS 15....................................... Supported
802.11n Status:
A-MPDU Tx:
Priority 0............................... Enabled
Priority 1............................... Disabled