Compex Technologies WPE54 - Manual (Page 75)

Chapter 5 Further Configuration
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When STP is enabled, the STP-enabled access points will first try to find the root access
point using the following criteria:
a. use the access point that is configured with the smallest STP priority.
Default priority set in the access points is 32768.
b. If the STP priority values are the same, the access point with smallest MAC
address will be chosen as root.
Once the root access point is determined, the STP algorithm will start to calculate the
path cost from each access point to the root access point. Based on the path cost in the
following table,
Bandwidth STP Cost
4Mbps 250
10Mbps 100
16Mbps 62
45Mbps 39
100Mbps 19
155Mbps 14
622Mbps 6
1Gbps 4
10Gbps 2
The path with the smallest cost will be used and extra redundant paths will be disabled.