Configuring Device Information 293Defining MSTP Interface SettingsThe MSTP Interface Settings page contains parameters assigning MSTP settings to specific interfaces. Toopen the MSTP Interface Settings page, click Switch → Spanning Tree → MSTP Interface Settings inthe tree view.Figure 7-38. MSTP Interface Settings• Instance ID — Defines the VLAN group to which the interface is assigned. Possible field range is 0-15.• Interface — Assigns either ports or LAGs to the selected MSTP instance.• Port State — Indicates whether the port is enabled or disabled in the specific instance.• Type — Indicates whether MSTP treats the port as a point-to-point port, or a port connected to a hub, andwhether the port is internal to the MSTP region or a boundary port. If the port is a boundary port, it alsoindicates whether the device on the other side of the link is working in RSTP or STP mode.• Role — Indicates the port role assigned by the STP algorithm in order to provide to STP paths. Thepossible field values are:– Root — Provides the lowest cost path to forward packets to root device.– Designated — Indicates the port or LAG via which the designated device is attached to the LAN.
