Dell PowerConnect 5224, System User'S Manual

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Forward Delay — Specifies the maximum time (in seconds) the root device waits before changing states (from listening to learning to forwarding).
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Designated Root — Identifies the priority and MAC address of the device in the Spanning Tree that the switch has accepted as the root device.
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Root Port — Specifies the port number on the switch that is closest to the root. The switch communicates with the root device through this port. If there
is no root port, the switch has been accepted as the root device of the Spanning Tree network.
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Root Path Cost — Identifies the path cost from the root port on the switch to the root device.
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Configuration Changes — Specifies the number of times the Spanning Tree has been reconfigured.
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Last Topology Change — Identifies the time since the Spanning Tree was last reconfigured.
From the Bridge Settings page, under Attributes , you can also enable and configure the following Spanning Tree parameters:
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Spanning Tree State — Enables or disables the Spanning Tree. If you enable the Spanning Tree, you must complete the other fields.
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Priority — Sets the priority setting among other switches in the Spanning Tree. (The range is 0 to 65535.)
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Hello Time — Sets the interval between configuration messages sent by the Spanning Tree Protocol. (The range is 1 to 10 seconds.)
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Maximum Age — Sets the amount of time before the system discards a configuration message. (The range is 6 to 40 seconds.)
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Forward Delay — Sets the amount of time the system spends in learning and listening states. (The range is 4 to 30 seconds.)
To save any changes you make in this page for the current session, click Apply Changes . If you don't want to save the changes, click Refresh .
CLI Commands
The following table summarizes the equivalent CLI commands for items in the Spanning Tree/Bridge Settings page.
Example
Console(config)#bridge 1 spanning-tree
Console(config)#bridge 1 forward-time 15
Console(config)#bridge 1 hello-time 2
Console(config)#bridge 1 max-age 20
Console(config)#bridge 1 priority 40000
Port Settings
In the Port Settings page, you can specify Spanning Tree parameters for each port. For each port number listed in the Port column, the following information
is available:
Command Usage
bridge bridge-group spanning-tree Enables the spanning tree algorithm globally for the switch.
Use the no form command to disable it.
bridge bridge-group forward-time
seconds
Configures the spanning tree bridge forward time globally for the
switch.
bridge bridge-group hello-time time Configures the spanning tree bridge hello time globally for the
switch.
bridge bridge-group max-age seconds Configures the spanning tree bridge maximum age globally for the
switch.
bridge bridge-group priority priority Configures the spanning tree priority globally for the switch.
show bridge group bridge-group
[ interface ]
Shows the spanning tree configuration.