Operation Manual – Smart Link-Monitor LinkH3C S3100-52P Ethernet Switch Chapter 1 Smart Link Configuration1-2II. Master portThe master port can be either an Ethernet port or a manually-configured or static LACPaggregation group. For example, you can configure Ethernet 1/0/1 of switch A in Figure1-1 as the master port through the command line.III. Slave portThe slave port can be either an Ethernet port or a manually-configured or static LACPaggregation group. For example, you can configure Ethernet 1/0/2 of switch A in Figure1-1 as the slave port through the command line.IV. Flush messageWhen a forwarding link fails, the device will switch the traffic to the blocked standby link.The former forwarding entries of each device in the network are no longer suitable forthe new topology, so MAC address forwarding entries and ARP entries must beupdated throughout the network. In this case, the Smart Link group sends flushmessages to notify other devices to refresh MAC address forwarding entries and ARPentries.V. Control VLAN for sending flush messagesThis control VLAN sends flush messages. When link switching occurs, the device(Switch A in Figure 1-1) broadcasts flush messages in this control VLAN.VI. Control VLAN for receiving flush messagesThis control VLAN is used for receiving and processing flush messages. When linkswitching occurs, the devices (Switch B and Switch C in Figure 1-1) receive andprocess flush messages of this control VLAN, and then refresh MAC forwarding tableentries and ARP entries.Note:z Currently, the member ports of a Smart Link group cannot be dynamic linkaggregation groups.z If the master port or slave port of a Smart Link group is a link aggregation group, youcannot remove this link aggregation group directly or change the aggregation groupinto a dynamic aggregation group. Before removing this aggregation group, youmust unbind the link aggregation group from the Smart Link.
