Lenovo RackSwitch G8332 Command Reference Manual page 454

454
G8332 Command Reference for ENOS 8.4
Table 223.
Spanning Tree Configuration Options (continued)
Command Syntax and Usage
spanning­tree guard loop
Enables STP loop guard. STP loop guard prevents the port from forwarding
traffic if no BPDUs are received. The port is placed into a loop‐inconsistent
blocking state until a BPDU is received.
Command mode: Interface port/Interface portchannel
spanning­tree guard root
Enables STP root guard. STP root guard enforces the position of the root
bridge. If the bridge receives a superior BPDU, the port is placed into a
root‐inconsistent state (listening).
Command mode: Interface port/Interface portchannel
spanning­tree guard none
Disables STP loop guard and root guard.
Command mode: Interface port/Interface portchannel
no spanning­tree guard
Sets the Spanning Tree guard parameters to their default values.
Command mode: Interface port/Interface portchannel
[no] spanning­tree link­type {p2p|shared|auto}
Defines the type of link connected to the port, as follows:
auto: Configures the port to detect the link type, and automatically match

its settings.
p2p: Configures the port for Point‐To‐Point protocol.

shared: Configures the port to connect to a shared medium (usually a

hub).
The default link type is auto.
Command mode: Interface port/Interface portchannel
[no] spanning­tree portfast
Enables or disables this port as portfast or edge port. An edge port is not
connected to a bridge and can begin forwarding traffic as soon as the link is up.
Configures server ports as edge ports (enabled).
Note: After you configure the port as an edge port, you must disable the port
and then re‐enable the port for the change to take effect.
Command mode: Interface port/Interface portchannel
[no] spanning­tree pvst­protection
Configures PVST Protection on the selected port. If the port receives any
PVST+/PVRST BPDUs it becomes error disabled. PVST Protection works only
in MSTP mode.
The default setting is disabled.
Command mode: Interface port/Interface portchannel