Configuring the Spanning Tree Protocol
Defining Spanning Tree Interface Settings
Cisco Small Business 300 Series Managed Switch Administration Guide 130
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• Hello Time—Set the interval in seconds that a Root Bridge waits between
configuration messages. The range is 1 to 10 seconds.
• Max Age—Set the interval in seconds that the switch can wait without
receiving a configuration message, before attempting to redefine its own
configuration.
• Forward Delay—Set the interval in seconds that a bridge remains in a
learning state before forwarding packets. For more information, refer to
Defining Spanning Tree Interface Settings.
Designated Root:
• Bridge ID—The bridge priority concatenated with the MAC address of the
switch.
• Root Bridge ID—The Root Bridge priority concatenated with the MAC
address of the Root Bridge.
• Root Port—The port that offers the lowest cost path from this bridge to the
Root Bridge. (This is significant when the bridge is not the root.)
• Root Path Cost—The cost of the path from this bridge to the root.
• Top olo gy Change s Counts—The total number of STP topology changes
that have occurred.
• Last Topology Change—The time interval that elapsed since the last
topology change occurred. The time is displayed in a days/hours/minutes/
seconds format.
STEP 3 Click Apply. The switch is updated with the STP Global settings.
Defining Spanning Tree Interface Settings
The STP Interface Settings Page enables you to configure STP on a per-port
basis, and to view the information learned by the protocol, such as the designated
bridge.
The configuration entered on this page is active for all flavors of the STP protocol.
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