Tripp Lite NGI-S05C2POE4 Owner's Manual page 59

Apply Click Apply to take effect the settings.
Refresh Click Refresh to begin configuring this screen afresh.
STP Port Status
The port role. Should be one of the Alternated / Designated / Root /
Role
Backup / None.
The port's status. Should be one of the Discarding / Blocking /
Status
Listening / Learning / Forwarding / Disabled.
Path Cost The port's path cost.
Priority The port's priority.
Edge Port The state of the edge function.
BPDU Filter The state of the BPDU filter function.
BPDU Guard The state of the BPDU guard function.
ROOT Guard The state of the BPDU Root guard function.
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