Reference v4.1.0 Instruction Manual

Network OS Command Reference 1239

53-1003115-01

spanning-tree edgeport

Enables the edge port on an interface to allow the interface to quickly transition to the forwarding

state.

Synopsis spanning-tree edgeport [bpdu-filter | bpdu-guard]

Operands bpdu-filter Sets the edge port Bridge Protocol Data Unit (BPDU) filter for the port.

bpdu-guard Guards the port against the reception of BPDUs.

Defaults Edge port is disabled.

Command Modes Interface subtype configuration mode

Description Use this command to enable the edge port feature. This command is only for RSTP and MSTP.

Use the spanning-tree portfast command for STP.

Usage Guidelines If xSTP is enabled over VCS, this command must be executed on all RBridge nodes.Note the

following details about edge ports and their behavior:

• A port can become an edge port if no BPDU is received.

• A port must become an edge port before it receives a BPDU.

• When an edge port receives a BPDU, it becomes a normal spanning-tree port and is no

longer an edge port.

• Because ports directly connected to end stations cannot create bridging loops in the

network, edge ports directly transition to the forwarding state, and skip the listening and

learning states

Examples To enable a port to quickly transition to the forwarding state:

switch(config)# interface tengigabitethernet 0/1

switch(conf-if-te-0/1)# spanning-tree edgeport

To set the edgeport BPDU filter for the port:

switch(conf-if-te-0/1)# spanning-tree edgeport

switch(conf-if-te-0/1)# spanning-tree edgeport bpdu-filter

To guard the port against reception of BPDUs:

switch(config)# interface tengigabitethernet 0/1

switch(conf-if-te-0/1)# spanning-tree edgeport

switch(conf-if-te-0/1)# spanning-tree edgeport bpdu-guard

See Also spanning-tree portfast, spanning-tree autoedge