FTOS Configuration Guide for the C-Series - Force10 Networks

• Port priority influences the likelyhood that a port will be selected to be a forwarding port in case that
several ports have the same port cost.
To change the port cost or priority of an interface, use the following commands:
Task Command Syntax Command Mode
Change the port cost of an interface.
Range: 0 to 65535
Default: see Table 43.
Change the port priority of an interface.
Range: 0 to 15
Default: 128
View the current values for interface parameters using the show spanning-tree rstp command from EXEC
privilege mode. See Figure 296.
Configure an EdgePort
The EdgePort feature enables interfaces to begin forwarding traffic approximately 30 seconds sooner. In
this mode an interface forwards frames by default until it receives a BPDU that indicates that it should
behave otherwise; it does not go through the Learning and Listening states. This feature is the same as
PortFast mode in Spanning Tree.
To enable EdgePort on an interface, use the following command:
Verify that EdgePort is enabled on a port using the show spanning-tree rstp command from the EXEC
privilege mode or the show config command from INTERFACE mode; Force10 recommends using the
show config command, as shown in Figure 298.
Figure 298 EdgePort Enabled on Interface
spanning-tree rstp cost cost INTERFACE
spanning-tree rstp priority priority-value INTERFACE
Caution: Configure EdgePort only on links connecting to an end station. EdgePort can cause loops if it is
enabled on an interface connected to a network.
Task Command Syntax Command Mode
Enable EdgePort on an interface. spanning-tree rstp edge-port INTERFACE
R1(conf-if-gi-2/0)#show config
!
interface GigabitEthernet 2/0
no ip address
switchport
spanning-tree rstp edge-port
shutdown
Force10(conf-if-gi-2/0)#
Indicates the interface is in EdgePort mode
416 Rapid Spanning Tree Protocol