Configuring the Altitude AP
Summit WM User Guide, Software Version 5.366
is OFDM. In 802.11n mode there are 2 supported channel bandwidths, 20MHz and 40MHz. The 802.11n
AP supports up to 300Mbps in 40MHz channels and 130Mbps in 20MHz channels. The modulation
used is 3x3 MIMO (multiple input, multiple output).
2.4 GHz radio supporting the 802.11b/g/n standard - When in legacy 802.11b/g mode, the Altitude
450/451 AP supports data rates up to 54Mbps identical to the Altitude 350-2i/350-2d AP. The
modulation used is OFDM for 11g and CCK for 11b. In 802.11n mode there are 2 supported channel
bandwidths, 20MHz and 40MHz. The Altitude 450/451 AP supports up to 300Mbps in 40MHz channels
and 130Mbps in 20MHz channels. The modulation used is 3x3 MIMO (multiple input multiple output).
The radios are enabled or disabled through the Summit WM GUI. For more information, see "Modifying
Altitude 802.11n AP 450/451 radio properties" on page 90.
The Unlicensed National Information Infrastructure (U-NII) bands are three frequency bands of 100
MHz each in the 5 GHz band, designated for short-range, high-speed, wireless networking
communication.
The 802.11n AP supports the full range of frequencies available in the 5GHz band:
z 5150 to 5250 MHz - U-NII Low band
z 5250 to 5350 MHz - U-NII middle band
z 5470 to 5700 MHz - U-NII Worldwide
z 5725 to 5825 MHz - U-NII high band
NOTE
The Wireless 802.11n AP can achieve link rates of up to 300Mbps. To achieve this level of high link rates, specific
items need to be configured through the Summit WM GUI. For more information, see "Modifying Altitude 802.11n
AP 450/451 radio properties" on page 90.
Altitude AP default IP address and first-time configuration
The Altitude APs are shipped from the factory with a default IP address - 192.168.1.20. The default IP
address simplifies the first-time IP address configuration process for Altitude APs. The Altitude AP
returns to its default IP address if the Altitude AP is not successful in its discovery process, which
determines the IP address of the Altitude AP and of the Summit WM Controller. Altitude AP behavior
ensures that only one Altitude AP at a time on a subnet can use the default IP address. For more
information, see "Discovery and registration overview" on page 71.
Altitude AP LEDs indicate when it is possible to connect the Altitude AP using the default IP address.
For more information, see "Understanding the Altitude AP LED status" on page 73.
Altitude APs can have their IP addresses assigned using two methods, either a Dynamic Host
Configuration Protocol (DHCP) server assigns the IP address or an administrator can assign the IP
address using the static configuration option. The DCHP IP address assignment method is the default
method for Altitude AP configuration. The Altitude AP returns to its default IP address assignment if
the DHCP assignment is not successful. DHCP assignment is part of the discovery process. For more
information, see "Discovery and registration overview" on page 71. The Altitude AP default IP address
impacts the first-time configuration processes for both methods:
z DHCP server - If successful, the Altitude AP is assigned an IP address by the network's DHCP
server when the Altitude AP is powered on.
z If the DHCP assignment is not successful in the first 60 seconds, the Altitude AP returns to its
default IP address.
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