Example for Configuring Inter-VLAN Proxy ARP

Procedure

1. Configure a super VLAN and sub-VLANs, and add interfaces to sub-VLANs.

   # Create sub-VLAN 2 and add interfaces to sub-VLAN 2.

   <HUAWEI> system-view
   [HUAWEI] sysname Switch
   [Switch] vlan batch 2
   [Switch] interface gigabitethernet 0/0/1
   [Switch-GigabitEthernet0/0/1] port link-type access
   [Switch-GigabitEthernet0/0/1] port default vlan 2
   [Switch-GigabitEthernet0/0/1] quit
   [Switch] interface gigabitethernet 0/0/2
   [Switch-GigabitEthernet0/0/2] port link-type access
   [Switch-GigabitEthernet0/0/2] port default vlan 2
   [Switch-GigabitEthernet0/0/2] quit
   

   # Create sub-VLAN 3 and add interfaces to sub-VLAN 3.

   [Switch] vlan batch 3
   [Switch] interface gigabitethernet 0/0/3
   [Switch-GigabitEthernet0/0/3] port link-type access
   [Switch-GigabitEthernet0/0/3] port default vlan 3
   [Switch-GigabitEthernet0/0/3] quit
   [Switch] interface gigabitethernet 0/0/4
   [Switch-GigabitEthernet0/0/4] port link-type access
   [Switch-GigabitEthernet0/0/4] port default vlan 3
   [Switch-GigabitEthernet0/0/4] quit
   

   # Create super VLAN 4 and add sub-VLAN 2 and sub-VLAN 3 to super VLAN 4.

   [Switch] vlan 4
   [Switch-vlan4] aggregate-vlan
   [Switch-vlan4] access-vlan 2
   [Switch-vlan4] access-vlan 3
   [Switch-vlan4] quit

2. Configure IP addresses for VLANIF interfaces in the super VLAN and enable inter-VLAN proxy ARP.

   [Switch] interface vlanif 4
   [Switch-Vlanif4] ip address 10.10.10.1 24
   [Switch-Vlanif4] arp-proxy inter-sub-vlan-proxy enable
   [Switch-Vlanif4] quit

3. Configure IP addresses for hosts.

   # Assign 10.10.10.2/24 to Host_1.

   # Assign 10.10.10.3/24 to Host_2.

   # Assign 10.10.10.4/24 to Host_3.

   # Assign 10.10.10.5/24 to Host_4.

4. Verify the configuration.

   # Check ARP entries of VLANIF 4 on the Switch. The command output shows the MAC address mapping the IP address of VLANIF 4.

   [Switch] display arp interface vlanif 4
   IP ADDRESS      MAC ADDRESS     EXPIRE(M) TYPE        INTERFACE   VPN-INSTANCE                                                      
                                             VLAN/CEVLAN                                                                               
   ------------------------------------------------------------------------------                                                      
   10.10.10.1      101b-5441-5bf6            I -         Vlanif4                                                                     
   ------------------------------------------------------------------------------                                                      
   Total:1         Dynamic:0       Static:0     Interface:1  

   # Ping the IP address of Host_3 on Host_1 (using Windows 7 as an example). The ping operation is successful.

   C:\Documents and Settings\Administrator> ping 10.10.10.4
   Pinging 10.10.10.4 with 32 bytes of data:
   Reply from 10.10.10.4: bytes=32 time<1ms TTL=128
   Reply from 10.10.10.4: bytes=32 time<1ms TTL=128
   Reply from 10.10.10.4: bytes=32 time<1ms TTL=128
   Reply from 10.10.10.4: bytes=32 time<1ms TTL=128
   
   Ping statistics for 10.10.10.4:
       Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
   Approximate round trip times in milli-seconds:
       Minimum = 0ms, Maximum = 0ms, Average = 0ms

   # Check the ARP table on Host_1. The command output shows that the MAC address mapping the IP address of Host_3 is the MAC address of VLANIF 4 on the Switch, indicating that Host_1 and Host_3 can communicate with each other through proxy ARP.

   C:\Documents and Settings\Administrator> arp -a
   Interface: 10.10.10.2 --- 0xd
     Internet Address      Physical Address      Type
     10.10.10.4            101b-5441-5bf6        dynamic
   ...