Configuring Inter-VLAN Proxy ARP

To implement Layer 3 communication among users on the same network segment but in different VLANs, enable inter-VLAN proxy ARP on the interface associated with the VLANs. For example, enable inter-VLAN proxy ARP on the VLANIF interface corresponding to a super-VLAN so that users in sub-VLANs can communicate with each other.

Figure 1 shows a network using inter-VLAN proxy ARP.

Figure 1 Networking diagram of inter-VLAN proxy ARP

In Figure 1, Host_1 and Host_2 belong to the same network segment but different VLANs. Inter-VLAN proxy ARP is enabled on the Switch so that Host_1 and Host_2 can communicate with each other.

You can also configure VLANIF interfaces to implement Layer 3 communication among users in different VLANs. For details, see Configuring Inter-VLAN Communication in "VLAN Configuration" in the S2720, S5700, and S6700 V200R019C10 Configuration Guide - Ethernet Switching.

Only the S5720-EI, S5720-HI, S5720I-SI, S5720S-SI, S5720-SI, S5735-S, S5735S-S, S5735-S-I, S5730-HI, S5730S-EI, S5730-SI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6720S-SI, S6720-SI, S6730-H, S6730S-H, S6730-S, and S6730S-S support the inter-VLAN proxy ARP.