Dell N3200-ON Networking N-Series Switches User Guide version 6.8.0 - Page 862

Command Purpose spanning-tree guard {root | loop | none} Enable loop guard or root guard (or disable both) on the interface. spanning-tree tcnguard Prevent the port from propagating topology change notifications. CTRL + Z Exit to Privileged Exec mode. show spanning-tree summary View various spanning tree settings and parameters for the switch. Configuring STP Interface Settings Use the following commands to configure the STP settings for a specific interface. Command configure interface interface spanning-tree disable spanning-tree portpriority priority spanning-tree cost cost CTRL + Z Purpose Enter global configuration mode. Enter interface configuration mode for the specified interface. The interface variable includes the interface type and number, for example tengigabitethernet 1/0/3 or portchannel 4. A range of interfaces can be specified using the interface range command. For example, interface range tengigabitethernet 1/0/8-12 configures interfaces 8, 9, 10, 11, and 12. The range keyword is also valid for LAGs (portchannels). Disable spanning tree on the port. Specify the priority of the port. The priority value is used to determine which ports are put in the forwarding state and which ports are put in the blocking state. A port with a lower priority value is more likely to be put into a forwarding state. Specify the spanning tree path cost for the port. The default port cost is 0, which signifies that the cost is automatically calculated based on port speed. Exit to Privileged Exec mode. 862 Spanning Tree Protocol