EnGenius EWS Series User Manual page 111

Internal Path Cost
Conf/Oper
External Path Cost
Conf/Oper
Designated Root
Bridge
Internal Root Cost
External Root Cost
Regional Root Bridge This is the bridge identifier of the CST regional root. It is made up using the
Internal Port Cost
Edge Port Conf/Oper Displays the edge port state.
Designated Bridge
Port Role
Port State
Click Apply to update the system settings.
Spanning Tree. This makes a port with higher priority less likely to be
blocked if the Spanning Tree Algorithm is detecting network loops. When
more than one port is assigned the highest priority, the port with lowest
numeric identifier will be enabled. The range is from 0 to 240, in steps of
16; and the default is: 128.
The Internal Path Cost setting allows you to specify the relative cost of
sending spanning tree traffic through the interface to adjacent bridges
within a spanning tree region.
The External Path Cost setting is used to calculate the cost of sending
spanning tree traffic through the interface to reach an adjacent spanning
tree region. The spanning tree algorithm tries to minimize the total path
cost between each point of the tree and the root bridge.
Displays the root bridge for the CST. It is comprised using the bridge priority
and the base MAC address of the bridge.
This is the cost to the CIST regional root in a region.
External root cost is the cost to the CIST root.
bridge priority and the base MAC address of the bridge.
Enter the cost of the port.
This is the bridge identifier of the bridge of the designated port. It is made
up using the bridge priority and the base MAC address of the bridge.
Each MST bridge port that is enabled is assigned a port role within each
spanning tree. The port role will be one of the following values: Root Port,
Designated Port, Alternate Port, Backup Port, Master Port, or Disabled.
The forwarding state of this port. The state parameters are: Discarding,
Learning, Forwarding, or Disabled.
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