Advanced Configuration |
|
Interfaces |
|
|
|
•
NOTE: In countries in which 802.11a (5 GHz) is not available for use, the
In general, you should use either 802.11g only mode (if you want to support 802.11g devices only) or 802.11b/g mode to support a mix of 802.11b and 802.11g devices.
Super Mode and Turbo Mode
Super mode improves throughput between the access point and wireless clients that support this capability. For wireless clients that support this capability the AP will negotiate and treat them accordingly, for other clients that do not support super mode, the AP will treat them as normal wireless clients.
Super mode can be configured only when the wireless operational mode is one of the following:
•802.11a only mode
•802.11g only mode
•802.11b/g mode
NOTE: Super mode and Turbo mode are not available in operational modes 802.11b and
Dynamic Turbo mode is supported in 802.11a and 802.11g mode. Dynamic turbo mode supports turbo speeds at twice the standard 802.11a/g data rates, and also dynamically switches between turbo mode speeds and normal speeds depending on the wireless client. If turbo mode is enabled, then this is displayed in the web UI and the transmit speeds and channels
When Turbo mode is enabled, only a subset of the wireless channels on both the 2.4 GHz and 5.0 GHz spectrum can be used. If any wireless clients do not support turbo mode, the AP will fall back to normal mode.
Turbo mode can be configured only when Super mode has already been enabled.
Super mode in 802.11a and 802.11g, and Turbo mode in 802.11g are supported in all regulatory domains. Turbo mode in 802.11a is available in all regulatory domains except Japan.
IEEE 802.11d Support for Additional Regulatory Domains
The IEEE 802.11d specification allows conforming equipment to operate in more than one regulatory domain over time. IEEE 802.11d support allows the AP to broadcast its radio’s regulatory domain information in its beacon and probe responses to clients. This allows clients to passively learn what country they are in and only transmit in the allowable spectrum. When a client enters a regulatory domain, it passively scans to learn at least one valid channel, i.e., a channel upon which it detects IEEE Standard 802.11 frames.
The beacon frame contains information on the country code, the maximum allowable transmit power, and the channels to be used for the regulatory domain.
The same information is transmitted in probe response frames in response to a client’s probe requests. Once the client has acquired the information required to meet the transmit requirements of the regulatory domain, it configures itself for operation in the regulatory domain.
The Wireless NIC determines the regulatory domain the AP is operating in. If the AP has dual Wireless NICs, the NIC in Slot A determines the regulatory domain. Depending on the regulatory domain, a default country code is chosen that is transmitted in the beacon and probe response frames.
Configuring 802.11d Support
Perform the following procedure to enable 802.11d support and select the country code:
1.Click Configure > Interfaces > Operational Mode.
2.Select Enable 802.11d.
47
