3Com MSR 30, MSR 50 Display stp region-configuration, Syntax display stp region-configuration

602CHAPTER 38: MSTP CONFIGURATION COMMANDS

Parameters instance instance-id: Displays the historic port role calculation information of a particular spanning tree instance. The minimum value of instance-idis 0, representing the common internal spanning tree (CIST), and the maximum value of instance-iddepends on device model.

Description Use the display stp history command to view the historic port role calculation information of the specified spanning tree instance or all spanning tree instances.

Note that:

■If you do not specify a spanning tree instance ID, this command will display the historic port role calculation information of all spanning tree instances. The displayed information is sequenced by instance ID, and in the timing of port role calculation in each instance.

■If you specify a spanning tree instance ID, this command will display the historic port role calculation information of only this specified spanning instance, in the timing of port role calculation.

Examples # View the historic port role calculation information of the card on slot 1 in MSTP instance 2.

<Sysname> display stp instance 2 history slot 1

--------------- STP	slot 1 history trace ---------------
-------------------	Instance 2 ---------------------
Port Ethernet1/1
Role change	: ROOT->DESI (Aged)
Time	: 2006/08/08 00:22:56
Port priority	: 0.00e0-fc01-6510 0 0.00e0-fc01-6510 128.1
Port Ethernet1/2
Role change	: ALTER->ROOT
Time	: 2006/08/08 00:22:56
Port priority	: 0.00e0-fc01-6510 0 0.00e0-fc01-6510 128.2
Table 106 Description on the fields of the display stp history command
Field	Description
Port	Port name
Role change	A role change of the port (Aged means that the change was
	caused by expiry of a configuration BPDU.)
Time	Time of port role calculation
Port priority	Port priority

display stp region-configuration

Syntax display stp region-configuration

View Any view

Parameters None