PLANET IGS-10020HPT - Manual (Page 173)

User’s Manual of IGS-10020PT / IGS-10020HPT
173
•
TCN The number of (legacy) Topology Change Notification BPDU's
received/transmitted on the port.
•
Discarded Unknown The number of unknown Spanning Tree BPDU's received (and discarded) on the
port.
• Discarded Illegal
The number of illegal Spanning Tree BPDU's received (and discarded) on the
port.
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