Procedure Restarting the Protocol Migration Process This procedure restarts the protocol migration process and forces renegotiation with neighboring devices. It reverts the device to MST mode. It is needed when the device no longer receives IEEE 802.1D BPDUs after it has been receiving them. Follow these steps to restart the protocol migration process (force the renegotiation with neighboring devices) on the device. Before you begin • An MST must be specified and enabled on the device. • If you want to use the interface version of the command, you must also know the MST interface used.
Procedure Configuring Multiple Spanning-Tree Protocol Restarting the Protocol Migration Process Command or Action Purpose Step 1 enable Example: Device> enable Enables privileged EXEC mode. Enter your password if prompted. Step 2 configure terminal Example: Device# configure terminal Enters global configuration mode. Step 3 interface interface-id Example: Device(config)# interface gigabitethernet 1/0/1 Specifies an interface to configure, and enters interface configuration mode. Valid interfaces include physical ports. Step 4 spanning-tree mst pre-standard Example: Device(config-if)# spanning-tree mst pre-standard Specifies that the port can send only prestandard BPDUs. Step 5 end Example:
Device(config-if)# end Returns to privileged EXEC mode. Command or Action Purpose Step 1 enable Example: Enables privileged EXEC mode. Enter your password if prompted. Configuring Multiple Spanning-Tree Protocol 27