Specifications

Status & Statistics 11-7
Selecting the [Status & Statistics]-->Subnet Stats--><Subnet Name> Stats-->STP Stats displays the
following screen.
The Spanning Tree Info portion of the screen displays the following information:
Field Description
Spanning Tree State
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.
Designated Root
Displays the access point MAC address of the bridge defined as the root
bridge in the Bridge STP Configuration screen.
Bridge ID
The Bridge ID identifies the priority and ID of the bridge sending the message
Root Port Number
Identifies the root bridge by listing its 2-byte priority followed by its 6-byte ID.
Root Path Cost
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.
Bridge Max Msg. Age
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.
Bridge Hello Time
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.
Bridge Forward Delay
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.