Spanning-tree portfast, Spanning-tree portfast -191 – SMC Networks SMC Tiger 10/100 SMC6128L2 User Manual

Page 491

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S

PANNING

T

REE

C

OMMANDS

4-191

of frame flooding required to rebuild address tables during
reconfiguration events, does not cause the spanning tree to initiate
reconfiguration when the interface changes state, and also overcomes
other STA-related timeout problems. However, remember that Edge
Port should only be enabled for ports connected to an end-node
device.

• This command has the same effect as the spanning-tree portfast.

Example

Related Commands

spanning-tree portfast (4 -191)

spanning-tree portfast

This command sets an interface to fast forwarding. Use the no form to
disable fast forwarding.

Syntax

[no] spanning-tree portfast

Default Setting

Disabled

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

• This command is used to enable/disable the fast spanning-tree mode

for the selected port. In this mode, ports skip the Discarding and
Learning states, and proceed straight to Forwarding.

• Since end-nodes cannot cause forwarding loops, they can be passed

through the spanning tree state changes more quickly than allowed by
standard convergence time. Fast forwarding can achieve quicker
convergence for end-node workstations and servers, and also
overcome other STA related timeout problems. (Remember that fast

Console(config)#interface ethernet ethernet 1/5
Console(config-if)#spanning-tree edge-port
Console(config-if)#

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