3Com WX3000 Master port, Slave port, Flush message, Control Vlan for sending flush messages

Master port

The master port can be either an Ethernet port or a manually-configured or static LACP aggregation group. For example, you can configure GigabitEthernet 1/0/1 of switch A in Figure 1-1 as the master port through the command line.

Slave port

The slave port can be either an Ethernet port or a manually-configured or static LACP aggregation group. For example, you can configure GigabitEthernet 1/0/2 of switch A in Figure 1-1 as the slave port through the command line.

Flush message

When 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 for the new topology, so MAC address forwarding entries and ARP entries must be updated throughout the network. In this case, the Smart Link group sends flush messages to notify other devices to refresh MAC address forwarding entries and ARP entries.

Control VLAN for sending flush messages

This control VLAN sends flush messages. When link switching occurs, the device (Switch A in Figure 1-1) broadcasts flush messages in this control VLAN.

Control VLAN for receiving flush messages

This control VLAN is used for receiving and processing flush messages. When link switching occurs, the devices (Switch B and Switch C in Figure 1-1) receive and process flush messages of this control VLAN, and then refresh MAC forwarding table entries and ARP entries.

zCurrently, the member ports of a Smart Link group cannot be dynamic link aggregation groups.

zIf the master port or slave port of a Smart Link group is a link aggregation group, you cannot remove this link aggregation group directly or change the aggregation group into a dynamic aggregation group. Before removing this aggregation group, you must unbind the link aggregation group from the Smart Link.

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