Brocade Communications Systems 53-1002163-02 Enabling STP on a Vlan, Disabling STP on a Vlan

VLAN configuration and management 6

To create a VLAN interface, perform the following steps from privileged EXEC mode.

1.Enter the configure terminal command to access global configuration mode.

2.Enter the interface vlan command to assign the VLAN interface number.

switch(config)#interface vlan 100

Enabling STP on a VLAN

Once all of the interface ports have been configured for a VLAN, you can enable spanning tree protocol (STP) for all members of the VLAN with a single command. Whichever protocol is currently selected is used by the VLAN. Only one type of STP can be active at a time.

A physical interface port can be a member of multiple VLANs. For example, a physical port can be a member of VLAN 100 and VLAN 55 simultaneously. In addition, VLAN 100 can have STP enabled and VLAN 55 can have STP disabled simultaneously.

To enable STP for a VLAN, perform the following steps from privileged EXEC mode.

1.Enter the configure terminal command to access global configuration mode.

2.Enter the protocol spanning tree command to select the type of STP for the VLAN.

switch(config)#protocol spanning tree mstp

3. Enter the interface command to select the VLAN interface number.

switch(config)#interface vlan 100

4. Enter the no spanning-tree shutdown command to enable spanning tree on VLAN 100. STP is active by default, but enter the command to ensure activation.

switch(conf-if-vl-100)#no spanning-tree shutdown

Disabling STP on a VLAN

Once all of the interface ports have been configured for a VLAN, you can disable STP for all members of the VLAN with a single command.

To disable STP for a VLAN, perform the following steps from privileged EXEC mode.

1.Enter the configure terminal command to access global configuration mode.

2.Enter the interface command to select the VLAN interface number.

switch(config)#interface vlan 55

3. Enter the spanning-tree shutdown command to disable spanning tree on VLAN 55.

switch(conf-if-vl-55)#spanning-tree shutdown

Configuring a VLAN interface to forward FCoE traffic

An FCoE Forwarder (FCF) is an FCoE device that supports FCoE VF_ports. It is the equivalent of an FC switch. A VLAN can be made FCF-capable. Only FCF-capable VLANs can carry FCoE traffic.

To configure a VLAN interface to forward FCoE traffic, see “Configuring the FCoE VLAN” on page 35.

Converged Enhanced Ethernet Administrator’s Guide	49
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