User's Manual

6 Configuring a Wireless Backhaul
140 Installation and User Guide: Airgo Access Point
The Uplink Configuration settings on this tab restrict how the backhaul is configured. Select some
or all of the settings, or leave this section blank to permit unrestricted choice of uplinks:
After making changes in the Uplink Criteria Configuration section, click Apply. Click Reset to
return the parameters on the panel to the previously saved values.
Field Description
Select Radio Interface Select radio wlan0 or wlan1.
Backhaul Security Select from the following options (see “Wireless Backhaul Security” on
page 136 for more information):
• Open-or-WEP: Compatible with the WEP or Open global security mode.
• PSK: Compatible with the WPA-PSK global security mode using the same
pre-shared key.
• Certificate: Compatible with the WPA-EAP global security mode.
Requires that the network have a security portal configured to provide
backhaul authentication.
SSID Criteria Select Detected SSID to connect to a specific network. To add an SSID that
has not been detected, select New SSID and enter the name of the SSID. This
configuration is one of the attributes used by the radio in BP mode to form a
backhaul.
IP Subnet Criteria Enter an IP address and subnet prefix length to restrict the backhaul to a
specific subnet. The BP radio selects those APs as candidates that advertise
the specified subnet. If the IP address is 0.0.0.0, the BP radio ignores the
subnet ID as a criterion when selecting AP candidates for trunk formation.
Path Selection Criteria Choose the criterion for selecting the best wireless backhaul route from the
following three options:
• Lowest Weighted Cost — Candidate parent APs are selected in ascending
order of path cost. (The candidate parent with lowest path cost to the wired
network is the one with highest priority). Path cost is a cumulative metric
in which each hop contributes to the path cost value. The calculation
factors in the backhaul and non-backhaul traffic load on the candidate AP
and quality of the link between the backhaul end points.
• Smallest Hop Count — Candidate parents are selected in ascending order
of hop count (number of hops to the wired network).
• Highest Node priority — Candidate parents are selected in ascending order
of priority as determined by the configured uplink BSSID list.
Uplink BSSID Criteria This parameter is used in conjunction with the area entitled “BSSIDs For
Uplink Criteria” at the bottom of the tab to restrict uplink candidates to a
specific set of BSSIDs or to permit all BSSIDs except a designated list.
• To restrict candidates to a designated list, select Accept from BSSIDs.
• To avoid candidates on a specified list, select Discard from BSSIDs.