spanning-tree designated-protect
Disallows the designated forwarding state on a port in STP 802.1d or 802.1w.
Command Default
STP (802.1d or 802.1w) can put a port into designated forwarding state.
Modes
Interface configuration mode
Usage Guidelines
The
no form of this command allows the designated forwarding state on a port in STP 802.1d
or 802.1w. If STP tries to put a port into designated forwarding state, the device
puts this port into the designated inconsistent STP state. This is effectively equivalent
to the listening state in STP in which a port cannot forward any user traffic. When
STP no longer marks this port as a designated port, the port is automatically removed
from the designated inconsistent state.
Note: You use this command to enable Designated Protection at the port-level while the designated
inconsistent state is a per-STP-instance, per-port state.
Note: You cannot enable Designated Protection and Root Guard on the same port.
History
| Release version | Command history |
|---|---|
| 07.3.00g | This command was introduced. |