Operation Manual – Smart Link-Monitor LinkH3C S3100 Series Ethernet Switches Chapter 2 Monitor Link Configuration2-1Chapter 2 Monitor Link ConfigurationNote:Currently, only S3100-EI series Ethernet switches support the monitor link feature.2.1 Introduction to Monitor LinkMonitor Link is a collaboration scheme introduced to complement for Smart Link. It isused 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 thelink for the uplink port of a Monitor Link group fails, all the downlink ports in the MonitorLink group are forced down. When the link for the uplink port recovers, all the downlinkports in the group are re-enabled.Switch AEth1/0/1Eth1/0/2Eth1/0/3UplinkDownlinkFigure 2-1 Network diagram for a Monitor Link group implementationAs shown in Figure 2-1, the Monitor Link group configured on the device Switch Aconsists of an uplink port (Ethernet1/0/1) and two downlink ports (Ethernet1/0/2 andEthernet1/0/3). 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 asthe uplink port only.
