3com 4500 PWR 26-PORT Manuel D’Utilisation

C

HAPTER

 2: U

SING

 P

ORT

 C

OMMANDS

Loop internal succeeded.

[4500-Ethernet1/0/1]

[4500-Ethernet1/0/1]loopback internal

Ethernet Port View

None

Use the 

 command to enable loopback 

detection control function on a Trunk port or Hybrid port. Use the 

 command to disable loopback detection 

control function on a Trunk port or Hybrid port.

This command controls the operating status of the port, when the loopback 
detection function is enabled and loopback is detected on a Trunk or Hybrid port. 
When this function is enabled and loopback is detected on a Trunk or Hybrid port, 
the system begins to control the operating status of the port. When this function 
is disabled and loopback is found, the system just reports a Trap message but has 
no control over the operating status of the Trunk or Hybrid port.

By default, the loopback detection control function on Trunk or Hybrid ports is 
disabled.

Enable port loopback detection control.

<4500>system-view

System View: return to User View with Ctrl+Z.

[4500]interface ethernet 1/0/1

[4500-Ethernet1/0/1]port link-type trunk

[4500-Ethernet1/0/1]loopback-detection control enable

[4500-Ethernet1/0/1]

Ethernet Port View