93• To connect a spanning tree network to a TRILL network, make sure the following requirements aremet:{ The spanning tree protocol is disabled on the TRILL network.{ An edge port is used to connect the spanning tree network to the TRILL network. The edge portcan quickly transit to the forwarding state. This prevents network topology changes frominfluencing the TRILL network.For more information about TRILL, see TRILL Configuration Guide.• The spanning tree configurations are mutually exclusive with service loopback and Smart Link.• Configurations made in system view take effect globally. Configurations made in Ethernet interfaceview or WLAN mesh interface view take effect on the interface only. Configurations made in Layer2 aggregate interface view take effect only on the aggregate interface. Configurations made on anaggregation member port can take effect only after the port is removed from the aggregationgroup.• After you enable a spanning tree protocol on a Layer 2 aggregate interface, the system performsspanning tree calculation on the Layer 2 aggregate interface. It does not perform spanning treecalculation on the aggregation member ports. The spanning tree protocol enable state andforwarding state of each selected member port is consistent with those of the corresponding Layer2 aggregate interface.• The member ports of an aggregation group do not participate in spanning tree calculation.However, the ports still reserve their spanning tree configurations for participating in spanning treecalculation after leaving the aggregation group.STP configuration task listTasks at a glanceConfiguring the root bridge:• (Required.) Setting the spanning tree mode• (Optional.) Configuring the root bridge or a secondary root bridge• (Optional.) Configuring the device priority• (Optional.) Configuring the network diameter of a switched network• (Optional.) Setting spanning tree timers• (Optional.) Setting the timeout factor• (Optional.) Configuring the BPDU transmission rate• (Optional.) Enabling outputting port state transition information• (Required.) Enabling the spanning tree featureConfiguring the leaf nodes:• (Required.) Setting the spanning tree mode• (Optional.) Configuring the device priority• (Optional.) Setting the timeout factor• (Optional.) Configuring the BPDU transmission rate• (Optional.) Configuring path costs of ports• (Optional.) Configuring the port priority• (Optional.) Enabling outputting port state transition information• (Required.) Enabling the spanning tree feature(Optional.) Configuring TC Snooping
