Switch User Manual

Spanning-Tree Commands 277
Syntax
spanning-tree bpdu { filtering | flooding }
•
filtering —Filter BPDU packets when spanning-tree is disabled on an interface.
•
flooding —Flood BPDU packets when spanning-tree is disabled on an interface.
Default Configuration
The default definition is flooding.
Command Modes
Global Configuration mode
User Guidelines
• The command is relevant when spanning-tree is disabled globally or on a single interface.
Example
The following example defines BPDU packet flooding when spanning-tree is disabled on an
interface
.
clear spanning-tree detected-protocols
The clear spanning-tree detected-protocols Privileged EXEC mode command restarts the protocol
migration process (force the renegotiation with neighboring switches) on all interfaces or on the
specified interface.
Syntax
clear spanning-tree detected-protocols [ ethernet interface number | port-channel port-
channel-number
]
•
interface —A valid Ethernet port.
•
port-channel-number —A port-channel index.
Default Configuration
If no interface is specified, the action is applied to all interfaces.
Command Modes
Privileged EXEC mode
User Guidelines
• This feature should be used only when working in RSTP mode.
Console(config)# spanning-tree bpdu flooding