C
HAPTER
33
| Spanning Tree Commands
– 803 –
COMMAND USAGE
◆ This command defines the priority for the use of an interface in the
multiple spanning-tree. If the path cost for all interfaces on a switch are
the same, the interface with the highest priority (that is, lowest value)
will be configured as an active link in the spanning tree.
◆ Where more than one interface is assigned the highest priority, the
interface with lowest numeric identifier will be enabled.
EXAMPLE
Console(config)#interface Ethernet 1/5
Console(config-if)#spanning-tree mst 1 port-priority 0
Console(config-if)#
RELATED COMMANDS
spanning-tree mst cost (801)
spanning-tree port-
bpdu-flooding
This command floods BPDUs to other ports when spanning tree is disabled
globally or disabled on a specific port. Use the no form to restore the
default setting.
SYNTAX
[no] spanning-tree port-bpdu-flooding
DEFAULT SETTING
Enabled
COMMAND MODE
Interface Configuration (Ethernet, Port Channel)
COMMAND USAGE
◆ When enabled, BPDUs are flooded to all other ports on the switch or to
all other ports within the receiving port’s native VLAN as specified by
the spanning-tree system-bpdu-flooding command.
◆ The spanning-tree system-bpdu-flooding command has no effect if
BPDU flooding is disabled on a port by the spanning-tree port-bpdu-
flooding command.
EXAMPLE
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree port-bpdu-flooding
Console(config-if)#
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