Modify Interface Pvst+ Parameters - Dell Force10 MXL Blade Configuration Manual

Figure 23-5. BPDU Filtering enabled globally
Task
Enable BPDU Filter globally to filter transmission of BPDU port fast
enabled interfaces.

Modify Interface PVST+ Parameters

To increase or decrease the probability that a port becomes a forwarding port, you can adjust two interface
parameters:
• 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.
Table 23-2 lists the default values for port cost by interface.
Table 23-2. PVST+ Default Port Cost Values
Port Cost
1000-Mb/s Ethernet interfaces
10-Gigabit Ethernet interfaces
40-Gigabit Ethernet interfaces
Port Channel with one 10-Gigabit Ethernet interface
Port Channel with one 40-Gigabit Ethernet interface
Port Channel with two 10-Gigabit Ethernet interfaces
Port Channel with two 40-Gigabit Ethernet interfaces
Command Syntax
edge-port bpdu filter
default
Default Value
20000
2000
1400
2000
1400
1800
600
Per-VLAN Spanning Tree Plus (PVST+) | 409
Command Mode
PROTOCOL PVST