HP StorageWorks 4/64 Brocade Converged Enhanced Ethernet Administrator's Guide - Page 85
Enabling a port (interface) as an edge port, Enabling the guard root, command for STP
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Configuring STP, RSTP, or MSTP on CEE interface ports 5 To configure the path cost for spanning tree calculations on the CEE interface, perform the following steps from Privileged EXEC mode. 1. Enter the configure terminal command to enter global configuration mode. 2. Enter the interface command to specify the CEE interface type and slot/port number. switch(config)#interface tengigabitethernet 0/1 3. Enter the no shutdown command to enable the CEE interface. 4. Enter the spanning-tree command to configure the path cost for spanning tree calculations on the CEE interface. switch(conf-if-te-0/1)#spanning-tree cost cost Enabling a port (interface) as an edge port From the CEE interface, use this command to enable the port as an edge port to allow the port to quickly transition to the forwarding state. To configure a port as an edge port, follow these guidelines: • A port can become an edge port if no BPDU is received. • When an edge port receives a BPDU, it becomes a normal spanning tree port and is no longer an edge port. • Because ports that are directly connected to end stations cannot create bridging loops in the network, edge ports transition directly to the forwarding state and skip the listening and learning states. • This command is only for RSTP and MSTP. Use the spanning-tree portfast command for STP (see "Enabling port fast (STP)" on page 67). To enable the CEE interface as an edge port, perform the following steps from Privileged EXEC mode. 1. Enter the configure terminal command to enter global configuration mode. 2. Enter the interface command to specify the CEE interface type and slot/port number. switch(config)#interface tengigabitethernet 0/1 3. Enter the no shutdown command to enable the CEE interface. 4. Enter the spanning-tree command to enable the CEE interface as an edge port. switch(conf-if-te-0/1)#spanning-tree edgeport bpdu-filter Enabling the guard root From the CEE interface, use this command to enable the guard root on the switch. The guard root feature provides a way to enforce the root bridge placement in the network. With the guard root enabled on an interface, the switch is able to restrict which interface is allowed to be the spanning tree root port or the path to the root for the switch. The root port provides the best path from the switch to the root switch. By default, guard root is disabled. Converged Enhanced Ethernet Administrator's Guide 65 53-1001346-01