1-5Enabling the ARP Entry CheckThe ARP entry check function disables the device from learning multicast MAC addresses. With theARP entry check enabled, the device cannot learn any ARP entry with a multicast MAC address, andconfiguring such a static ARP entry is not allowed; otherwise, the system displays error messages.After the ARP entry check is disabled, the device can learn the ARP entry with a multicast MAC address,and you can also configure such a static ARP entry on the device.Follow these steps to enable the ARP entry check:To do… Use the command… RemarksEnter system view system-view —Enable the ARP entry check arp check enableOptionalBy default, the device is disabled fromlearning multicast MAC addresses.ARP Configuration ExampleNetwork requirementsAs shown in Figure 1-3, hosts are connected to Switch, which is connected to Router through interfaceGigabitEthernet 1/0/1 belonging to VLAN 10. The IP address of Router is 192.168.1.1/24. The MACaddress of Router is 00e0-fc01-0000.To enhance communication security for Router and Switch, static ARP entries are configured on Switch.Figure 1-3 Network diagram for configuring static ARP entriesConfiguration procedureConfigure Switch# Create VLAN 10. system-view[Switch] vlan 10[Switch-vlan10] quit# Add interface GigabitEthernet1/0/1 to VLAN 10.
