<testsw-1> display logbuffer
<testsw-1>system-view [testsw-1]info-center logbuffer size 1024
<testsw-1>reset logbuffer
<testsw-1> system-view [testsw-1] interface GigabitEthernet 1/0/1 [testsw-1-GigabitEthernet1/0/1] undo enable log updown [testsw-1-GigabitEthernet1/0/1] quit