Fortinet 548B, Administration Manual

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Bridge Hello Time - Specifies the bridge hello time for the Common and Internal Spanning tree
(CST), with the value being less than or equal to "(Bridge Max Age / 2) - 1". The default hello time
value is 2.
Bridge Forward Delay - Specifies the time spent in "Listening and Learning" mode before
forwarding packets. Bridge Forward Delay must be greater or equal to "(Bridge Max Age / 2) + 1".
The time range is from 4 seconds to 30 seconds. The default value is 15.
Spanning Tree Maximum Hops - Configure the maximum number of hops for the Spanning tree.
Non-Configurable Data
Bridge identifier - The bridge identifier for the CST. It is made up using the bridge priority and the
base MAC address of the bridge.
Time since topology change - The time in seconds since the topology of the CST last changed.
Topology change count - Number of times topology has changed for the CST.
Topology change - The value of the topology change parameter for the switch indicating if a
topology change is in progress on any port assigned to the CST. It takes a value if True or False.
Designated root - The bridge identifier of the root bridge. It is made up from the bridge priority and
the base MAC address of the bridge.
Root Path Cost - Path Cost to the Designated Root for the CST.
Root Port - Port to access the Designated Root for the CST.
Max Age - Path Cost to the Designated Root for the CST.
Forward Delay - Derived value of the Root Port Bridge Forward Delay parameter.
Hello Time - Derived value of the Root Port Bridge Hello Time parameter.
Hold Time - Minimum time between transmission of Configuration BPDUs.
CST Regional Root - Priority and base MAC address of the CST Regional Root.
CST Path Cost - Path Cost to the CST tree Regional Root.
Command Buttons
Submit - Applies the new configuration and causes the changes to take effect. These changes will
not be retained across a power cycle unless a save configuration is performed.
Refresh - Refreshes the screen with most recent data.
11.3.19.3 Configuring Spanning Tree MST Configuration Page