FTOS Configuration Guide for the C-Series - Force10 Networks

Table 45 lists the default values for port cost by interface.
Table 45 MSTP Default Port Cost Values
To change the port cost or priority of an interface:
View the current values for these interface parameters using the command show config from INTERFACE
mode. See Figure 307.
Configure an EdgePort
Port Cost Default Value
100-Mb/s Ethernet interfaces 200000
1-Gigabit Ethernet interfaces 20000
10-Gigabit Ethernet interfaces 2000
Port Channel with 100 Mb/s Ethernet interfaces 180000
Port Channel with 1-Gigabit Ethernet interfaces 18000
Port Channel with 10-Gigabit Ethernet interfaces 1800
Task Command Syntax Command Mode
Change the port cost of an interface.
Range: 0 to 200000
Default: see Table 45.
Change the port priority of an interface.
Range: 0 to 240, in increments of 16
Default: 128
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:
spanning-tree msti number cost cost INTERFACE
spanning-tree msti number priority
priority
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 mstp edge-port
[bpduguard]
INTERFACE
426 Multiple Spanning Tree Protocol