User's Guide

Table 29: Mesh Device Settings (continued)
AP Model Option AP Behavior
• AP3xx
• AP4xx
• AP5xx
Channel Plan Non-root APs are configured with Mesh ACS
(Automatic Channel Selection). This allows the
non-root AP to follow the channel and width of
the uplink AP. The non-root AP scans channels to
find the best path to a root AP. Preferred Root and
Preferred Neighbor settings influence the path to
the root AP.
Note: Upon upgrade from earlier revisions of
Extreme Campus Controller, non-root APs in a
mesh network are converted to Mesh ACS to
determine the best channel.
Note: Path Minimum and Path Threshold are settings that refer to values in the Mesh Route Table. They
are metric values determined by an algorithm that indicate when ACS scans for a better mesh point
radio channel.
The best route path algorithm includes elements such as hop count, data rates, RSSI, and loss rate. A
perfect score is 1179.
• AP3xx
• AP4xx
• AP5xx
Path Minimum The minimum root path metric value is used to
evaluate the channel during the Mesh ACS scan
process. Only the mesh point with a root path
metric less than the minimum root path is
considered a candidate mesh point that can hop
to the mesh point root.
Valid values are 100-20000. Default value is 1000.
The lower metric value indicates a better quality
mesh link to the root.
• AP3xx
• AP4xx
• AP5xx
Path Threshold The maximum root path metric value that
determines when to evaluate the mesh point radio
channel for a better path to the gateway. When
the current path metric value exceeds this
threshold, an ACS scan is triggered on the mesh
point. Valid values are 800-65535. Default value is
1500. Setting this value below 1500 will result in
more frequent channel scans.
• AP3xx
• AP4xx
• AP5xx
Tolerance Period This is a buer period (in seconds) between when
the metric value exceeds the Path Threshold and
the scan begins. Set the number of seconds to
allow the root path metric to recover before a scan
begins.
Valid values are 10-600. Default value is 60.
Configure Add or Edit a Configuration Profile
Extreme Campus Controller User Guide for version 5.46.03 129