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Radio Band (802.11n only): Sets the band for the 802.11n radio:
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Auto - Allows the appliance to automatically detect and set the optimal channel for wireless operation based on signal strength and integrity. This is the default setting.
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Standard - 20 MHz Channel - Specifies that the 802.11n radio will use only the standard 20 MHz channel. When this option is selected, the Standard Channel drop-down menu is displayed.
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Standard Channel - This drop-down menu only displays when the 20 MHz channel is selected. By default, this is set to Auto, which allows the appliance to set the optimal channel based on signal strength and integrity. Optionally, you can select a single channel within the range of your regulatory domain. Selecting a specific a channel can also help with avoiding interference with other wireless networks in the area.
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Wide - 40 MHz Channel - Specifies that the 802.11n radio will use only the wide 40 MHz channel. When this option is selected, the Primary Channel and Secondary Channel drop-down menus are displayed:
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Primary Channel - By default this is set to Auto. Optionally, you can specify a specific primary channel.
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Secondary Channel - The configuration of this drop-down menu is controlled by your selection for the primary channel:
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Enable Short Guard Interval: Specifies the short guard interval of 400ns (as opposed to the standard guard interval of 800ns). The guard interval is a pause in transmission intended to avoid data loss from interference or multipath delays.
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Enable Aggregation: Enables 802.11n frame aggregation, which combines multiple frames to reduce overhead and increase throughput.
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TIP: The Enable Short Guard Interval and Enable aggregation options can slightly improve throughput. They both function best in optimum network conditions where users have strong signals with little interference. In networks that experience less than optimum conditions (interference, weak signals, etc.), these options may introduce transmission errors that eliminate any efficiency gains in throughput.
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SSID: The SSID (service set identifier) can be changed to any alphanumeric value with a maximum of 32 characters. The default value for the SSID on a TZ Wireless appliance is sonicwall- plus the last four characters of the BSSID (basic service set ID, equal to the appliance MAC address); for example, sonicwall-C587.
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