3com WX3000 Manuel D’Utilisation

 

2-1 

Monitor Link is a collaboration scheme introduced to complement for Smart Link. It is used to monitor 

uplink and to perfect the backup function of Smart Link.  

A monitor Link consists of an uplink port and one or multiple downlink ports. When the link for the uplink 

port of a Monitor Link group fails, all the downlink ports in the Monitor Link group are forced down. When 

the link for the uplink port recovers, all the downlink ports in the group are re-enabled.  

Figure 2-1 Network diagram for a Monitor Link group implementation 

Switch A

GE1/0/1

GE 1/0/2

GE1 /0/3

Uplink

Downlink

 

 

As shown in 

, the Monitor Link group configured on the device Switch A consists of an uplink 

port (GigabitEthernet 1/0/1) and two downlink ports (GigabitEthernet 1/0/2 and GigabitEthernet 1/0/3). 

A member port can be an Ethernet port, static LACP aggregation group, manual link aggregation group, 

or Smart Link group. A Smart Link group can serve as the uplink port only.