• ARP Learning via Gratuitous ARP• ARP Learning via ARP Request• Configuring ARP RetriesConfiguring Static ARP EntriesARP dynamically maps the MAC and IP addresses, and while most network host support dynamicmapping, you can configure an ARP entry (called a static ARP) for the ARP cache.To configure a static ARP entry, use the following command.• Configure an IP address and MAC address mapping for an interface.CONFIGURATION modearp vrf vrf-name ip-address mac-address interface– vrf vrf-name: use the VRF option to configure a static ARP on that particular VRF.– ip-address: IP address in dotted decimal format (A.B.C.D).– mac-address: MAC address in nnnn.nnnn.nnnn format.– interface: enter the interface type slot/port information. For 10G interfaces, enter the slot/port[/subport] information.Example of the show arp CommandThese entries do not age and can only be removed manually. To remove a static ARP entry, use the noarp ip-address command.To view the static entries in the ARP cache, use the show arp static command in EXEC privilegemode.Dell#show arpProtocol Address Age(min) Hardware Address Interface VLAN CPU--------------------------------------------------------------------------------Internet 10.1.2.4 17 08:00:20:b7:bd:32 Ma 1/1 - CPDell#Enabling Proxy ARPBy default, Proxy ARP is enabled. To disable Proxy ARP, use the no proxy-arp command in the interfacemode.To re-enable Proxy ARP, use the following command.• Re-enable Proxy ARP.INTERFACE modeip proxy-arpTo view if Proxy ARP is enabled on the interface, use the show config command in INTERFACE mode. Ifit is not listed in the show config command output, it is enabled. Only non-default information isdisplayed in the show config command output.428 IPv4 Routing
