26Adding or modifying a multiport unicast MAC address entryYou can configure a multiport unicast MAC address entry to associate a unicast destination MACaddress with multiple ports. The frame with a destination MAC address matching the entry is sent out ofmultiple 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 this case, you can configure a multiport unicast MAC address entry on the device connected to theserver group. Then, the device forwards the frame destined for the server group through all portsconnected to the servers within the cluster.Figure 2 NLB clusterDo not configure an interface as the output interface of a multiport unicast MAC address entry if theinterface receives frames destined for the multiport unicast MAC address. Otherwise, the frames areflooded 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 globallyStep Command Remarks1. Enter system view. system-view N/A2. Add or modify a multiportunicast MAC address entry.mac-address multiportmac-address interface interface-listvlan vlan-idBy default, no multiport unicastMAC address entry is configuredglobally.Make sure you have created theVLAN and assigned the interfaceto the VLAN.Configuring a multiport unicast MAC address entry on an interfaceStep Command Remarks1. Enter system view. system-view N/ANLB clusterDevice
