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4-2
Multiple Instance Spanning-Tree Operation
Contents
How to Save Your Current Configuration . . . . . . . . . . . . . . . . . . . 4-47
Displaying MSTP Statistics and Configuration . . . . . . . . . . . . . . . . . 4-49
Displaying Global MSTP Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-50
Displaying Detailed Port Information . . . . . . . . . . . . . . . . . . . . . . 4-52
Displaying Status for a Specific MST Instance . . . . . . . . . . . . . . . 4-53
Displaying the MSTP Configuration . . . . . . . . . . . . . . . . . . . . . . . 4-54
Troubleshooting an MSTP Configuration . . . . . . . . . . . . . . . . . . . . . . 4-58
Displaying the Change History of Root Bridges . . . . . . . . . . . . . . . . . 4-58
Displaying Debug Counters for All MST Instances . . . . . . . . . . . . . . . 4-61
Displaying Debug Counters for One MST Instance . . . . . . . . . . . . . . 4-62
Displaying Debug Counters for Ports in an MST Instance . . . . . . . . . 4-64
Field Descriptions in MSTP Debug Command Output . . . . . . . . . . . . 4-66
Troubleshooting MSTP Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-69
Loop Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70
Configuring Loop Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-71
Viewing Loop Protection Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-72