Adding or modifying a multiport unicast MAC address entry
You can configure a multiport unicast MAC address entry to associate a unicast destination MAC address with multiple ports. The frame with a destination MAC address matching the entry is sent out of multiple ports.
For example, in NLB unicast mode:
All servers within the cluster uses the cluster's MAC address as their own address.
Frames destined for the cluster are forwarded to every server in the group.
In this case, you can configure a multiport unicast MAC address entry on the device connected to the server group. Then, the device forwards the frame destined for the server group through all ports connected to the servers within the cluster.
Figure 2: NLB cluster
Do not configure an interface as the output interface of a multiport unicast MAC address entry if the interface receives frames destined for the multiport unicast MAC address. Otherwise, the frames are flooded on the VLAN to which they belong.
You can configure a multiport unicast MAC address entry globally or on an interface.
Configuring a multiport unicast MAC address entry globally
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Add or modify a multiport unicast MAC address entry. | mac-address multiport mac-address interface interface-list vlan vlan-id | By default, no multiport unicast MAC address entry is configured globally. Make sure you have created the VLAN and assigned the interface to the VLAN. |
Configuring a multiport unicast MAC address entry on an interface
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter interface view. |
| N/A |
3. Add the interface to a multiport unicast MAC address entry. | mac-address multiport mac-address vlan vlan-id | By default, no multiport unicast MAC address entry is configured on an interface. Make sure you have created the VLAN and assigned the interface to the VLAN. |