PLANET WGSD-1022 - Manual (Page 55)

Figure 4-18 RSTP Port Settings screen
The page contains the following fields:
• Port# Where displays the port or LAG on which Rapid STP is enabled.
• Role Where indicates the port role assigned by the STP algorithm in order
to provide to STP paths. The possible field values are:
• Root, where provides the lowest cost path to forward packets to
root switch.
• Designated, where indicates that the port or LAG via which the
designated switch is attached to the LAN.
• Alternate, which provides an alternate path to the root switch
from the root interface.
• Backup, which 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, which indicates the port is not participating in the
Spanning Tree.
• Mode Where indicates the current Spanning Tree mode. The Spanning Tree
mode is selected in the Global STP screen. The possible field values
are:
• Classic STP, which indicates that Classic STP is enabled on the
device.
• Rapid STP, which indicates that Rapid STP is enabled on the
device.
• Multiple STP, which indicates that Multiple STP is enabled on
the device.
• Fast Link This 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.
• Port State Indicates if RSTP is enabled on the interface.
• P2P Admin Status Indicates if a point-to-point links are established, or permits the device
to establish a point-to-point link. The possible field values are:
• Auto. Point-to-point links are automatically established by the
device.
• Enabled, enables the device to establish a point-to-point link.
• Disabled, where disables point-to-point link.
• P2P Oper Status Indicates the Point-to-Point operating state. To run a migration test,
press Activate next to the Activate Protocol Migration Test field. The
test sends Link Control Protocol (LCP) packets to test if a data link is
enabled.