Self Loop Detection - Siemens S223 User Manual

User Manual
SURPASS hiD 6615 S223/S323 R1.5
8.3.9.7
A50010-Y3-C150-2-7619
To configure BPDU guard in the switch, perform the following procedure.
Step 1
Configure the specific port as edge-port.
Command
stp edge-port PORTS
no stp edge-port PORTS
Step 2
Configure BPDU Guard.
Command
stp bpdu-guard
no stp bpdu-guard
However, BPDU Guard can be corrupted by unexpected cause. In this case, the edge
port is blocked immediately and remains at this state until user recovers it. To prevent this
problem, the hiD 6615 S223/S323 switch provides BPDU guard auto-recovery function.
When an edge port is down for BPDU packet which came from other switch, the port is
recovered automatically after configured time.
To configure BPDU Guard auto-recovery, use the following command.
Command
stp bpdu-guard auto-recovery
stp bpdu-guard auto-recovery-
time <10-1000000>
no stp bpdu-guard
recovery
no stp bpdu-guard
recovery-time
To recover a blocked port by manually, use the following command.
Command
stp bpdu-guard err-recovery
PORTS

Self Loop Detection

Although there is no double path in user's equipment, loop can be caused by network en-
vironment and cable condition connected to equipment. To prevent this, the hiD 6615
S223/S323 has self loop detection to perceive that outgoing packet is got back. Through
the self loop detection, you can prevent packet, which comes back because it blocks the
port.
Mode
Configures the port as Edge port.
Bridge
Disables Edge port configuration.
Mode
Configures BPDU Guard function on switch.
Bridge
Disables BPDU Guard function.
Mode
Configures BPDU Guard auto-recovery on switch.
Configures BPDU Guard auto-recovery-time.
Bridge
auto-
Disables BPDU Guard auto-recovery function.
auto-
Mode
Bridge Recovers a blocked port by manually.
UMN:CLI
Description
Description
Description
Description
223