1-2Use the undo arp check enable command to disable the ARP entry checking function.With the ARP entry checking function enabled, the switch cannot learn any ARP entry with a multicastMAC address. Configuring such a static ARP entry is not allowed either; otherwise, the system promptserror information.After the ARP entry checking function is disabled, the switch can learn the ARP entry with a multicastMAC address, and you can also configure such a static ARP entry on the switch.By default, the ARP entry checking function is enabled.Examples# Disable the ARP entry checking function. system-viewSystem View: return to User View with Ctrl+Z.[Sysname] undo arp check enablearp staticSyntaxarp static ip-address mac-address [ vlan-id interface-type interface-number ]arp static ip-address mac-address vlan-id (in Ethernet port view)undo arp ip-addressViewSystem view, Ethernet port viewParametersip-address: IP address contained in the ARP mapping entry to be created/removed.mac-address: MAC address contained in the ARP mapping entry to be created, in the format of H-H-H.vlan-id: ID of the VLAN to which the static ARP entry belongs, in the range of 1 to 4,094.interface-type: Type of the port to which the static ARP entry belongs.interface-number: Number of the port to which the static ARP entry belongs.DescriptionUse the arp static command to create a static ARP entry.Use the undo arp command to remove an ARP entry.By default, the system ARP mapping table is empty and the address mapping entries are obtained byARP dynamically.Note that: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.
