Port Status Auto Recovery; Loop Detection Configuration Task List; Enabling Loop Detection; Enabling Loop Detection Globally - HP FlexFabric 12900 Series Configuration Manual

Port status auto recovery

Port status auto recovery applies only to the block and no-learning loop protection actions. If the device
receives no loop detection frame three loop detection intervals after a loop is detected on a port, it
performs the following tasks:
• Automatically sets the port to the forwarding state.
Notifies the user of the event.
•
NOTE:
Incorrect recovery can occur when loop detection frames are discarded to reduce the load. To avoid this,
use the shutdown action, or manually remove the loop.

Loop detection configuration task list

Tasks at a glance
(Required.)
(Optional.)
(Optional.)

Enabling loop detection

You can enable loop detection globally or on a per-port basis. The global configuration applies to all
ports in the specified VLANs. The per-port configuration applies to the individual port only when the port
belongs to the specified VLANs. Per-port configurations take precedence over global configurations.
HP recommends not enabling loop detection on TRILL ports, because TRILL networks prevent loops from
being generated. For information more about TRILL, see TRILL Configuration Guide.

Enabling loop detection globally

Step
1. Enter system view.
2. Globally enable loop
detection.

Enabling loop detection on a port

Step
1. Enter system view.
Enabling loop detection
Configuring the loop protection action
Setting the loop detection interval
Command
system-view
loopback-detection global enable
vlan { vlan-list | all }
Command
system-view
118
Remarks
N/A
Disabled by default.
Remarks
N/A