Extreme Networks Summit WM User Manual page 108

Configuring the Altitude AP
Frag. Threshold - Type the fragment size threshold, in bytes, above which the packets will be
fragmented by the AP prior to transmission. The default value is 2346, which means all packets
are sent unfragmented. Reduce this value only if necessary.
6 In the Basic Radio Settings section, do the following:
RF Domain - Type a string that uniquely identifies a group of APs that cooperate in managing RF
channels and transmission power levels. The maximum length of the string is 16 characters. The
RF Domain is used to identify a group of Altitude APs.
Current Channel - This field is view only. It displays the actual channel the ACS has assigned to
the Altitude AP radio. The Current Channel value and the Last Requested Channel value may
be different because the ACS automatically assigns the best available channel to the Altitude AP,
ensuring that an Altitude AP's radio is always operating on the best available channel.
Last Requested Channel - This field is view only. This field displays the last wireless channel
that you had selected for the Altitude AP to communicate with the wireless devices.
Request New Channel - Click the wireless channel you want the Altitude AP to use to
communicate with wireless devices.
Click Auto to request the ACS to search for a new channel for the Altitude AP, using a channel
selection algorithm. This forces the AP to go through the auto-channel selection process again.
Depending on the regulatory domain (based on country), some channels may be restricted. The
default value is based on North America. For more information, see
information".
Auto Tx Power Ctrl (ATPC) - Select to enable ATPC. ATPC automatically adapts transmission
power signals according to the coverage provided by the Altitude APs. After a period of time, the
system will stabilize itself based on the RF coverage of your Altitude APs.
Current Tx Power Level - This field is view only. It displays the actual Tx power level assigned
to the Altitude AP radio.
Max Tx Power - Click the maximum Tx power level that the range of transmit power can be
adjusted: 8 to 18 dBm. It is recommended to use 18 dBm to not limit the potential Tx power level
range that can be used.
Min Tx Power - If ATPC is enabled, click the minimum Tx power level that the range of transmit
power can be adjusted. It is recommended to use the lowest value available to not limit the
potential Tx power level range that can be used.
NOTE
The Minimum Tx Power level is subject to the regulatory compliance requirement for the selected country.
Auto Tx Power Ctrl Adjust - If ATPC is enabled, click the Tx power level that can be used to
adjust the ATPC power levels that the system has assigned. It is recommended to click 0 dBm
during your initial configuration. If you have an RF plan that recommended Tx power levels for
each Altitude AP, compare the actual Tx power levels your system has assigned against the
recommended values your RF plan has provided. Use the Auto Tx Power Ctrl Adjust value to
achieve the recommended values.
Channel Plan - If ACS is enabled, you can define a channel plan for the Altitude AP. Defining a
channel plan allows you to limit which channels are available for use during an ACS scan. For
example, you may want to avoid using specific channels because of low power, regulatory
domain, or radar interference. Click one of the following:
3 Channel Plan - ACS will scan the following channels: 1, 6, and 11 in the US, and 1, 7, and 13
in Europe.
4 Channel Plan - ACS will scan the following channels: 1, 4, 7, and 11 in the US, and 1, 5, 9,
and 13 in Europe.
108
Appendix B, "Regulatory
Summit WM User Guide, Software Version 5.3