Spanning-Tree Loopguard - Digital Data Communications Level One GTL-2091 Manual

Default
Disabled
Instruction
Root Guard characteristic can prevent a port from becoming Root port due to receving
high priority BPDU.
Loop Guard characteristic can protect a Root Port or a Alternate Port when it becomes
the Designated Port. This function can prevent a port from occuring the loop when it
cannot continuously receive BPDU.
Command mode
Interface configuration
Example
This example shows how to enable root guard:
Console_config_f0/0# spanning-tree guard root
Console_config_f0/0#
1.1.7

spanning-tree loopguard

Description
To enable loop guard as a default on all ports of a given bridge, use the spanning-tree
loopguard default command in global configuration mode. To disable loop guard, use
the negative form of this command.
spanning-tree loopguard default
Parameter
None
Default
None
Instruction
None
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STP Optional Characteristic Configuration Commands
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