132 CHAPTER 11: CONFIGURING S PANNING T REEDesignated Root ■ Bridge ID — Identifies the Bridge priority and MAC address.■ Root Bridge ID — Identifies the Root Bridge priority and MACaddress.■ Root Port — Indicates the port number that offers the lowest costpath from this bridge to the Root Bridge. This field is significant whenthe bridge is not the Root Bridge. The default is zero.■ Root Path Cost — Specifies the cost of the path from this bridge tothe Root Bridge.■ Topology Changes Counts — Specifies the total amount of STPstate changes that have occurred.■ Last Topology Change — Indicates the amount of time that haselapsed since the bridge was initialized or reset, and the lasttopographic change that occurred. The time is displayed in aday-hour-minute-second format, such as 2 days 5 hours 10 minutesand 4 seconds.2 Define the fields.3 Click Apply. STP is enabled, and the device is updated.
