4-2To do… Use the command… RemarksConfigure the VLAN interfacethrough which Resilient packetsare sentresilient-arp interfacevlan-interface vlan-idOptionalBy default, Resilient ARP packetsare sent through the interface ofVLAN 1 (VLAN-interface 1).Display information about theResilient ARP state display resilient-arp [ unit unit-id ] Available in any viewNote that the above configuration specifies the VLAN interface through which Resilient packets are sent,whereas all the VLAN interfaces can receive Resilient ARP packets.Resilient ARP Configuration ExampleNetwork requirementsThere are four units in an IRF network: unit 1 to unit 4. Unit 1 and unit 3 connect to another switch(Switch) through link aggregation. If the connection between unit 1 and unit 3 and the connectionbetween unit 2 and unit 4 break off, there will be two Layer 3 switches with the same configuration in thenetwork. In this case, problems occur in packets forwarding between the fabric and the Switch. You canenable the Resilient ARP function for the fabric to avoid the problems. For security concerns, you needto enable MD5 authentication function. The ports through which unit 3 and unit 4 connect to the Switchbelong to VLAN 2.Network diagramFigure 4-1 Network diagram for Resilient ARPSwitchUnit 1Unit 4Unit 3Unit 2IRFConfiguration procedure# Enable the Resilient ARP function. system-view[Sysname] resilient-arp enable# Configure the Resilient ARP packets to be sent through the VLAN-interface 2.[Sysname] resilient-arp interface Vlan-interface 2
