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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