R21xx-HP FlexFabric 11900 Layer 2 LAN Switching Configuration Guide

98
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
g
lance
(Required.) Enabling loop detection
(Optional.) Configuring the loop protection action
(Optional.) Setting the loop detection interval
Enabling loop detection
You can enable loop detection globally or on specific ports. The global configuration applies to all ports
in the specified VLAN. The per-port configuration applies to the individual port only when the port
belongs to the specified VLAN. On a port, the per-port configuration has higher priority than the global
configuration.
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
Ste
p
Command Remarks
1. Enter system view. system-view N/A
2. Globally enable loop
detection.
loopback-detection global enable
vlan { vlan-list | all }
Disabled by default.
Enabling loop detection on a port
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter Layer 2 Ethernet interface
view or Layer 2 aggregate
interface view.
interface interface-type
interface-number
N/A
3. Enable loop detection on the
port.
loopback-detection enable vlan
{ vlan-list | all }
Disabled by default.