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4.3.5 Spanning Tree
Spanning Tree Protocol (STP) provides tree topography for any arrangement of bridges. STP also provides one path
between end stations on a network, eliminating loops.
Loops occur when alternate paths exist between hosts. Loops in an extended network can cause bridges to forward traffic
indefinitely, resulting in increased traffic and reducing network efficiency.
The devices support the following Spanning Tree protocols:
• Classic STP -- Provides a single path between end stations, avoiding and eliminating loops. For more
information on configuring Classic STP, see "Defining STP Global Settings".
• Rapid STP -- Detects and uses of network topologies that provide faster spanning tree convergence, without
creating forwarding loops. For more information on configuring Rapid STP, see "Configuring Rapid Spanning
Tree".
The Spanning Tree page contains links to the following topics:
• Global Settings
• STP Port Settings
• STP LAG Settings
• Rapid Spanning Tree
Global Settings
The STP Global Settings page contains parameters for enabling and configuring STP operation on the device.
To open STP Global Settings screen perform the folling:
1.
Click Switch -> Spanning Tree -> Global Settings
2.
The STP Global Settings screen is displayed as in Figure 3-58.
The page includes the following fields:
• Spanning Tree State -- Enables or disables Spanning Tree on the device. The possible field values are:
Figure 3-58 Spanning Tree Global Settings screen
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