D-Link DWS/DXS-3200 manual Click . The Mstp Interface Table opens

Configuring Spanning Tree

Defining Multiple Spanning Tree

–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 point-to-point link or 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 STP mode by which STP is enabled on the device. The possible field values are:

–Classic STP — Classic STP is enabled on the device. This is the default value.

–Rapid STP — Rapid STP is enabled on the device.

–Multiple STP — Multiple STP is enabled on the device.

•Interface Priority — Defines the interface priority for the specified instance. The default value is 128.

•Path Cost — Indicates the port contribution to the Spanning Tree instance. The range should always be 1- 200,000,000.

•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 LAG State has changed from a Forwarding state to a Blocking state.

•Remain Hops — Indicates the hops remaining to the next destination.

2.Click . The MSTP Interface Table opens.

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