Configuring Inter-VLAN ND Proxies
Context
Inter-VLAN ND proxies are generally applied to VLAN aggregation scenarios on IPv6 networks. When hosts in different sub-VLANs need to communicate at Layer 3, configure inter-VLAN ND proxies on the VLANIF interfaces corresponding to the super-VLAN to allow communication among all sub-VLANs in the super-VLAN.
In Figure 1, Host_1 and Host_2 in the same network segment belong to different VLANs. Configure inter-VLAN ND Proxies on Switch so that Host_1 and Host_2 can communicate with each other.
Another way to implement Layer 3 communication between users in different VLANs is by configuring VLANIF interfaces. For details, see Configuring Inter-VLAN Communication in "VLAN Configuration" in the S2720, S5700, and S6700 V200R019C10 Configuration Guide - Ethernet Switching.
Only 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 inter-VLAN ND proxies.
Procedure
- Run the system-view command to enter the system view.
- Run the interface vlanif vlan-id command to enter the VLANIF interface view of the interface corresponding to the super-VLAN.
- Run the ipv6 enable command to enable the IPv6 function on the interface.
- Run the ipv6 address command to configure an IPv6 address for the interface. The IPv6 address must be in the same network segment as the IPv6 addresses of all sub-VLAN hosts.
- Run the ipv6 nd proxy inter-access-vlan enable command to configure an inter-VLAN ND proxy on the VLANIF interface.
By default, the inter-VLAN ND proxy function is disabled.