R0106-HP MSR Router Series Layer 2 - LAN Switching Configuration Guide(V7)

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Configuring the loop protection action
You can configure the loop protection action globally or on a per-port basis. The global configuration
applies to all ports. The per-port configuration applies to the individual ports. The per-port configuration
takes precedence over the global configuration.
Configuring the global loop protection action
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Configure the global loop
protection action.
loopback-detection global action
shutdown
By default, the router generates a
log but performs no action on the
port on which a loop is detected.
Configuring the loop protection action on a Layer 2 Ethernet
interface
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter Layer 2 Ethernet interface
view.
interface interface-type
interface-number
N/A
3. Configure the loop protection
action on the interface.
loopback-detection action { block |
no-learning | shutdown }
By default, the router generates
a log but performs no action on
the port on which a loop is
detected.
Setting the loop detection interval
With loop detection enabled, the router sends loop detection frames at a specified interval. A shorter
interval offers more sensitive detection but consumes more resources. Consider the system performance
and loop detection speed when you set the loop detection interval.
To set the loop detection interval:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Set the loop detection interval.
loopback-detection interval-time
interval
The default setting is 30 seconds.
Displaying and maintaining loop detection
Execute display commands in any view.