Digital Data Communications Level One GTL-2091 Manuale - Pagina 4

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After configuring Port Fast, BPDU Guard or BPDU Filter needs to be configured for

protection.

Command mode

Global or interface configuration mode

Example

This example shows how to enable PortFast mode globally:

Console_config# spanning-tree portfast default

Console_config#

This example shows how to enable PortFast mode on the interface f0/0:

Console_config_f0/0# spanning-tree portfast

Console_config_f0/0#

1.1.2

spanning-tree bpduguard

Description

To enable bridge protocol data unit (BPDU) guard on the interface, use the

spanning-tree bpduguard command in interface configuration mode. To return to the

default settings, use the negative form of this command.

spanning-tree bpduguard {disable | enable}

no spanning-tree bpduguard

Parameter

None

Default

Disabled

Instruction

In SSTP/PVST mode, if a port that configured BPDU Guard and Port Fast receives

BPDU, this port will be forced to shutdown. User can restore it by the manual

configuration. In RSTP/MSTP mode, if a port that configured BPDU Guard receives

BPDU, this port will be configured to Blocking state for a period of time.

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STP Optional Characteristic Configuration Commands

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