3com WX3000 Manuel D’Utilisation

 

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configuration command once on one port and that configuration will apply to all ports in the port group. 

This effectively reduces redundant configurations. 

A Port group could be manually created by users. Multiple Ethernet ports can be added to the same port 

group but one Ethernet port can only be added to one port group. 

Follow these steps to configure a port group: 

Enter system view 

— 

Create a port group or enter the specified port 
group view 

port-group group-id 

Required 

Add an Ethernet port to a specified port group 

port interface-list 

Required 

 

A port can not be added to a port group if it has been added to an aggregation group, and vice versa. 

 

Loopback detection is used to monitor if loopback occurs on a port. 

After you enable loopback detection on Ethernet ports, the device can monitor if external loopback 

occurs on them. If there is a loopback port found, the device will put it under control.  

z 

If loopback is found on an access port, the system disables the port, sends a Trap message to the 

client and removes the corresponding MAC forwarding entry.  

z 

If loopback is found on a trunk or hybrid port, the system sends a Trap message to the client. When 

the loopback port control function is enabled on these ports, the system disables the port, sends a 

Trap message to the client and removes the corresponding MAC forwarding entry.  

Follow these steps to set loopback detection for an Ethernet port: 

Enter system view  

— 

Enable loopback detection 
globally  

Required 

By default, loopback detection 
is disabled globally.  

Set time interval for port 
loopback detection  

loopback-detection 
interval-time time 

Optional 

The default interval is 30 
seconds.  

Enter Ethernet port view  

interface interface-type 
interface-number 

— 

Enable loopback detection on a 
specified port  

Required 

By default, port loopback 
detection is disabled.  

Enable loopback port control on 
the trunk or hybrid port  

Optional 

By default, loopback port 
control is not enabled.