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222

itself automatically as ERROR-PORT when it receives BPDU packets, and the

port will disable the forwarding function for a while. To disable the BPDU

protect function, please use no spanning-tree bpduguard command.

Syntax

spanning-tree bpduguard

no spanning-tree bpduguard

Command Mode

Interface Configuration Mode (interface gigabitEthernet / interface range

gigabitEthernet / interface port-channel / interface range port-channel)

Privilege Requirement

Only Admin, Operator and Power User level users have access to these

commands.

Example

Enable the BPDU protect function for port 1/0/2:

T1600G-52TS(config)# interface gigabitEthernet 1/0/2

T1600G-52TS(config-if)# spanning-tree bpduguard

26.19 spanning-tree guard loop

Description

The spanning-tree guard loop command is used to enable the Loop Protect

function for a port. Loop Protect is to prevent the loops in the network

brought by recalculating STP because of link failures and network

congestions. To disable the Loop Protect function, please use no

spanning-tree guard loop command.

Syntax

spanning-tree guard loop

no spanning-tree guard loop