edge-port bpdu filter default
Figure 90. BPDU Filtering Enabled Globally
Modifying the Interface Parameters
You can adjust two interface parameters to increase or decrease the probability that a port becomes a
forwarding port.
•Port cost is a value that is based on the interface type. The greater the port cost, the less likely the
port is selected to be a forwarding port.
•Port priority influences the likelihood that a port is selected to be a forwarding port in case that
several ports have the same port cost.
The following lists the default values for port cost by interface.
Table 43. Default Values for Port Costs by Interface
Port Cost Default Value
1000-Mb/s Ethernet interfaces 20000
40-Gigabit Ethernet interfaces 1400
10-Gigabit Ethernet interfaces 2000
Port Channel with one 10–Gigabit Ethernet interface 2000
Port Channel with one 40-Gigabit Ethernet interface 1400
Port Channel with two 10-Gigabit Ethernet interfaces 1800
Port Channel with two 40-Gigabit Ethernet interfaces 600
594 Multiple Spanning Tree Protocol (MSTP)