Dell PowerConnect 3524P User Manual page 340

Figure 7-40. Rapid Spanning Tree (RSTP)
The Spanning Tree RSTP page contains the following fields:
• Interface — Port or LAG for which you can view and edit RSTP settings.
• State — Disables RSTP state of the selected interface.
• Role—Indicates the port role assigned by the STP algorithm in order to provide STP paths.
The possible field values are:
– Root—Provides the lowest cost path to forward packets to root switch.
– Designated—Indicates that the port or LAG via which the designated switch is attached to the LAN.
– Alternate—Provides an alternate path to the root switch from the root interface.
– Backup—Provides a backup path to the designated port path toward the Spanning Tree leaves.
Backup ports occur only when two ports are connected in a loop by a point-to-point link. Backup ports
also occur when a LAN has two or more connections connected to a shared segment.
– Disabled—Indicates the port is not participating in the Spanning Tree.
• Mode—Indicates the current Spanning Tree mode. The Spanning Tree mode is selected in the
Spanning Tree Global Settings page. The possible field values are:
– Classic STP—Indicates that Classic STP is enabled on the device.
– Rapid STP—Indicates that Rapid STP is enabled on the device.
– Multiple STP—Indicates that Multiple STP is enabled on the device.
340
Configuring Switch Information