1-5z If the IP address of the virtual router corresponds to an actual MAC address, the source MACaddress in the gratuitous ARP packet will be the VLAN interface’s MAC address of the masterswitch in the VRRP backup group.For details about VRRP backup group. Refer to the part discussing VRRP in this manual for details.Configuring ARPFollow these steps to configure ARP basic functions:To do… Use the command… RemarksEnter system view system-view —Add a static ARP entryarp static ip-address mac-address[ vlan-id interface-typeinterface-number ]OptionalBy default, the ARP mapping tableis empty, and entries are createddynamically by ARP.Configure the ARP aging timer arp timer aging aging-time Optional20 minutes by default.Enable the ARP entry checkingfunction (that is, disable the switchfrom learning ARP entries withmulticast MAC addresses)arp check enable OptionalEnabled by default.z Static ARP entries are valid as long as the Ethernet switch operates normally. But some operations,such as removing a VLAN, or removing a port from a VLAN, will make the corresponding ARPentries invalid and therefore removed automatically.z As for the arp static command, the value of the vlan-id argument must be the ID of an existingVLAN, and the port identified by the interface-type and interface-number arguments must belong tothe VLAN.z Currently, static ARP entries cannot be configured on the ports of an aggregation group.Configuring Gratuitous ARPFollow these steps to configure gratuitous ARP:To do… Use the command… RemarksEnter system view system-view —Enable the gratuitous ARP packetlearning function gratuitous-arp-learning enable OptionalEnabled by default.
