Reference Guide

Per-VLAN Spanning Tree Plus (PVST+) | 711
The values for interface PVST+ parameters are given in the output of the command show spanning-tree
pvst, as shown in Figure 34-4.
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. The
bpduguard
shutdown-on-violation option causes the interface hardware to be shutdown when it receives a BPDU.
When only
bpduguard is implemented, although the interface is placed in an Error Disabled state when
receiving the BPDU, the physical interface remains up and spanning-tree will drop
packets in the hardware
after a BPDU violation. BPDUs are dropped in the software after receiving the BPDU violation. This
feature is the same as PortFast mode in Spanning Tree.
To enable EdgePort on an interface, use the following command:
The EdgePort status of each interface is given in the output of the command
show spanning-tree pvst, as
shown in Figure 34-4.
Change the port priority of an interface.
Range: 0 to 240, in increments of 16
Default: 128
spanning-tree pvst vlan 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 pvst edge-port
[
bpduguard |
shutdown-on-violation]
INTERFACE
Task Command Syntax Command Mode