port, this field also indicates whether the device on the other side of the link is working in RSTP or STP mode
—Master Port — Indicates the port is a master port. A Master port provides connectivity from a MSTP region to the outlying CIST root.
—Internal Port — Indicates the port is within the same MSTP region.
•Role — Indicates 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 device.
—Designated — Indicates the port or LAG through 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 by a
—Disabled — Indicates the port is not participating in the Spanning Tree.
•Mode — Indicates the STP mode by which STP is enabled on the device. The possible field values are:
—Classic STP — Classic STP is enabled on the device.
—Rapid STP — Rapid STP is enabled on the device. This is the default value.
—Multiple STP — Multiple STP is enabled on the device.
•Interface Priority — Defines the interface priority for the specified instance. The default value is 128. Priority should defined be between 0 and 240 in steps of 16.
•Path Cost — Indicates the port contribution to the Spanning Tree instance. The range should always be
•Designated Bridge ID — Displays the ID of the bridge that connects the link or shared LAN to the root.
•Designated Port ID — Displays the ID of the port on the designated bridge that connects the link or the shared LAN to the root.
•Designated Cost — Indicates that the default path cost is assigned according to the method selected on the Spanning Tree Global Settings page.
•Forward Transitions — Indicates the number of times the port or LAG has been changed from a Forwarding state to a Discarding state.
•Remain Hops — Indicates the hops remaining to the next destination.
Intel® Gigabit Ethernet Switch AXXSW1GB User Guide | 101 |
