Dell PowerConnect 2824 - Page 123

Dell PowerConnect 28xx Systems User Guide 123
Figure 7-19. Rapid Spanning Tree (RSTP)
• Interface — Port or LAG on which Rapid STP is enabled.
•
Role — The port role assigned by the STP algorithm in order to provide to STP paths. The possible
field values are:
–
Root — Provides the lowest cost path to forward packets to root device.
–
Designated — The port or LAG via which the designated device is attached to the LAN.
–
Alternate — Provides an alternate path to the root device 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. Backup ports also occur when a
LAN has two or more connections connected to a shared segment.
–
Disabled — The port is not participating in the Spanning Tree (the port’s link is down).
•
Mode — Displays the STP mode by which STP is enabled on the device. The possible field values are:
–
Classic STP — Enables Classic STP on the device. This is the default value.
–
Rapid STP — Enables Rapid STP on the device.
•
Fast Link Operational Status — Indicates if Fast Link is enabled or disabled for the port or LAG. If
Fast Link is enabled for a port, the port is automatically placed in the forwarding state.
Enabling RSTP
1 Open the Rapid Spanning Tree (RSTP) page.
2 Define the Point-to-Point Admin , Point-to-Point Oper , and the Activate Protocol Migration fields.