Loopback-Detection Control Enable; Loopback-Detection Enable - H3C S7500E Series Command Manual

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Command Manual – Port Correlation Configuration

H3C S7500E Series Ethernet Switches

1.1.16 loopback-detection control enable

loopback-detection control enable

undo loopback-detection control enable

Ethernet port view

Use the loopback-detection control enable command to enable loopback detection

for a Trunk port or Hybrid port.

Use the undo loopback-detection control enable command to restore the default.

By default, loopback detection for a Trunk port or Hybrid port is disabled.

When the loopback detection is enabled, if a port has been detected with loopback,

it will be shutdown. A Trap message will be sent to the terminal and the

corresponding MAC address forwarding entries will be deleted.

When the loopback detection is disabled, if a port has been detected with

loopback, a Trap message will be sent to the terminal. The port is still working

By default, loopback detection for Trunk port and Hybrid port is disabled.

Note that this command is inapplicable to an Access port as its loopback detection is

enabled by default.

# Enable loopback detection for trunk port Ethernet 2/0/1.

<Sysname> system-view

[Sysname] loopback-detection enable

[Sysname] interface ethernet 2/0/1

[Sysname-Ethernet2/0/1] port link-type trunk

[Sysname-Ethernet2/0/1] loopback-detection enable

[Sysname-Ethernet2/0/1] loopback-detection control enable

loopback-detection enable

Chapter 1 Ethernet Port Configuration

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