•Role — Displays the port role assigned by the STP algorithm to provide to STP paths. The possible field values are:
—Root — Provides the lowest cost path to forward packets to the root switch.
—Designated — The port or LAG through 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
—Disabled — The port is not participating in the Spanning Tree.
•
—STP — Classic STP is enabled on the device.
—Rapid STP — Rapid STP is enabled on the device.
—Multiple STP — Multiple STP is enabled on the device.
•Fast Link Operational Status — Indicates whether 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 Status — Displays the current RSTP state of a port. If enabled, the port state determines what forwarding action is taken on traffic. Possible port states are:
—Forwarding — Indicates that the port can forward traffic or learn MAC addresses.
—Disabled — Indicates that STP is currently disabled on the port. The port forwards traffic while learning MAC addresses.
—Discarding — Indicates that the port is currently blocked and cannot forward traffic or learn MAC addresses
•
•Activate Protocol Migration — Indicates whether sending Link Control Protocol (LCP) packets to configure and test the data link is enabled.
94 | Intel® Gigabit Ethernet Switch AXXSW1GB User Guide |