HP FlexNetwork 5130 HI series User Manual (English)

To Next Page

To Previous Page

160

Syntax

In Layer 2 Ethernet interface view:

loopback-detection action { block | no-learning | shutdown }

undo loopback-detection action

In Layer 2 aggregate interface view:

loopback-detection action shutdown

undo loopback-detection action

Default

When the device detects a loop on a port, it generates a log but performs no action on the port.

Views

Layer 2 Ethernet interface view, Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

block: Enables the block mode. If a loop is detected, the device disables MAC address learning and

blocks inbound traffic on the port, in addition to generating a log. Layer 2 aggregate interfaces do not

support this keyword.

no-learning: Enables the no-learning mode. If a loop is detected, the device generates a log and

disables MAC address learning on the port. Layer 2 aggregate interfaces do not support this

keyword.

shutdown: Enables the shutdown mode. If a loop is detected, the device generates a log and shuts

down the port. The device automatically brings up the port after the detection timer expires. You can

use the shutdown-interval command to set the detection timer. For more information, see

Fundamentals Command Reference.

Usage guidelines

To configure the loop protection action globally, use the loopback-detection global action

command.

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.

Example

# Set the loop protection action to shutdown on port GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[System-GigabitEthernet1/0/1] loopback-detection action shutdown

Related commands

• display loopback-detection

• loopback-detection global action

loopback-detection enable

Use loopback-detection enable to enable loop detection on a port.

Use undo loopback-detection enable to disable loop detection on a port.

Need help?

Do you have a question about the HP FlexNetwork 5130 HI series and is the answer not in the manual?

HP FlexNetwork 5130 HI series Specifications

General

Model	HP FlexNetwork 5130 HI series
Category	Switch
Switch Type	Managed
Layer	Layer 3
Power over Ethernet (PoE)	Available on some models
Fans	Hot-swappable fans
Management	CLI, Web GUI, SNMP, RMON, HP Intelligent Management Center
Routing Protocol	RIP, OSPF, BGP, IS-IS, Static Routing
Layer 3 Features	VRRP
Security Features	ACLs, IEEE 802.1X, RADIUS, TACACS+, SSH, SSL
Quality of Service (QoS)	DiffServ
Weight	Varies by model
Operating Temperature	0°C to 45°C
VLANs	4094
Operating Humidity	10% to 95% non-condensing