Motorola WS2000 System Reference Manual page 247

Selecting the [Status & Statistics] --> Subnet Stats-->
following screen.
The Spanning Tree Info portion of the screen displays the following information:
Field
Spanning Tree State
Designated Root
Bridge ID
Root Port Number
Root Path Cost
Bridge Max Msg. Age
Bridge Hello Time
Bridge Forward Delay
Description
Displays whether the spanning tree state is currently enabled or disabled. The
spanning tree state must be enabled for a unique spanning-tree calculation to
occur when the bridge is powered up or when a topology change is detected.
Displays the access point MAC address of the bridge defined as the root
bridge in the Bridge STP Configuration screen.
The Bridge ID identifies the priority and ID of the bridge sending the message
Identifies the root bridge by listing its 2-byte priority followed by its 6-byte ID.
Bridge message traffic contains information identifying the root bridge and
the sending bridge. The root path cost represents the distance (cost) from the
sending bridge to the root bridge.
The Max Msg Age measures the age of received protocol information
recorded for a port, and to ensure the information is discarded when it
exceeds the value set for the Maximum Message age timer.
The Bridge Hello Time is the time between each bridge protocol data unit
sent. This time is equal to 2 seconds (sec) by default, but can tuned between 1
and 10 sec. The 802.1d specification recommends the Hello Time be set to a
value less than half of the Max Message age value.
The Bridge Forward Delay value is the time spent in a listening and learning
state. This time is equal to 15 sec by default, but can be set between 4 and 30
sec.
<Subnet Name> Stats --> STP Stats
11-7
Status & Statistics
displays the