C
HAPTER
10
| Spanning Tree
Configuring STP Global Settings
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network. (References to “ports” in this section means “interfaces,”
which includes both ports and trunks.)
◆ Root Hello Time — The interval (in seconds) at which this device
transmits a configuration message.
◆ Root Forward Delay — The maximum time (in seconds) this device
will wait before changing states (i.e., discarding to learning to
forwarding). This delay is required because every device must receive
information about topology changes before it starts to forward frames.
In addition, each port needs time to listen for conflicting information
that would make it return to a discarding state; otherwise, temporary
data loops might result.
◆ Topology Changes — The number of times the Spanning Tree has
been reconfigured.
◆ Last Topology Change Time — The time since the Spanning Tree was
last reconfigured.
WEB INTERFACE
To configure global settings for Spanning Tree:
1. Click Configuration, Spanning Tree, STP Global Setting.
2. Set the Spanning Tree Status to enabled.
3. Modify other required parameters.
4. Click Apply.
Figure 22: STP Global Setting
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