Example for Configuring Inter-VLAN Proxy ND in a VLAN Aggregation Scenario

This section provides an example for configuring inter-VLAN proxy ND to allow devices in different VLANs to communicate with each other in a VLAN aggregation scenario.

Networking Requirements

If hosts are on the same network segment and physical network but belong to different VLANs, inter-VLAN proxy ND must be enabled on the associated VLAN interfaces to enable Layer 3 interworking between the hosts.

On the network shown in Figure 1, the device is connected to Host A, Host B, Host C, and Host D. These four hosts are on the same network segment, but Host A and Host B belong to VLAN 2 and Host C and Host D belong to VLAN 3. VLAN 2 and VLAN 3 constitute super-VLAN 4, and the hosts in VLAN 2 (sub-VLAN) and VLAN 3 cannot communicate with each other. To address this problem, enable inter-VLAN proxy ND on the VLANIF interfaces of the super-VLAN.

Figure 1 Networking of inter-VLAN proxy ND in a VLAN aggregation scenario

Interfaces 1 through 4 in this example represent GE 0/1/1, GE 0/1/2, GE 0/1/9, and GE 0/1/10, respectively.

Configuration Roadmap

The configuration roadmap is as follows:

Configure super-VLANs and sub-VLANs.
Add interfaces to the sub-VLAN.
Create VLANIF interfaces for the super-VLAN and assign IPv6 addresses to the VLANIF interfaces.
Enable inter-VLAN proxy ND.

Data Preparation

To complete the configuration, you need the following data:

IPv6 addresses of hosts in different VLANs
IDs of the sub-VLANs and super-VLANs
IPv6 addresses of the VLANIF interfaces in the super-VLAN

Procedure

Configure super-VLANs and sub-VLANs.

# Configure sub-VLAN 2.

<HUAWEI> system-view
[~HUAWEI] sysname Device
[*HUAWEI] commit
[~Device] vlan 2
[*Device-vlan2] quit
[*Device] commit

# Add GE 0/1/1 and GE 0/1/2 to sub-VLAN 2.

[~Device] interface gigabitethernet 0/1/1
[~Device-GigabitEthernet0/1/1] portswitch 
[*Device-GigabitEthernet0/1/1] port link-type access
[*Device-GigabitEthernet0/1/1] port default vlan 2
[*Device-GigabitEthernet0/1/1] quit
[*Device] interface gigabitethernet 0/1/2
[*Device-GigabitEthernet0/1/2] portswitch 
[*Device-GigabitEthernet0/1/2] port link-type access
[*Device-GigabitEthernet0/1/2] port default vlan 2
[*Device-GigabitEthernet0/1/2] quit
[*Device] commit

# Configure sub-VLAN 3.

[~Device] vlan 3
[*Device-vlan3] quit
[*Device] commit

# Add GE 0/1/9 and GE 0/1/10 to sub-VLAN 3.

[~Device] interface gigabitethernet 0/1/9
[~Device-GigabitEthernet0/1/9] portswitch 
[*Device-GigabitEthernet0/1/9] port link-type access
[**Device-GigabitEthernet0/1/9] port default vlan 3
[*Device-GigabitEthernet0/1/9] quit
[*Device] interface gigabitethernet 0/1/10
[*Device-GigabitEthernet0/1/10] portswitch 
[*Device-GigabitEthernet0/1/10] port link-type access
[*Device-GigabitEthernet0/1/10] port default vlan 3
[*Device-GigabitEthernet0/1/10] quit
[*Device] commit

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

[~Device] vlan 4
[*Device-vlan4] aggregate-vlan
[*Device-vlan4] access-vlan 2
[*Device-vlan4] access-vlan 3
[*Device-vlan4] quit
[*Device] commit

Create and configure VLANIF 4.

# Create VLANIF 4.

[~Device] interface Vlanif 4

# Assign an IPv6 address to VLANIF 4.

[*Device-Vlanif4] ipv6 enable 
[*Device-Vlanif4] ipv6 address 2001:db8:300:400::5 64

Enable inter-VLAN proxy ND on VLANIF 4.

[*Device-Vlanif4] ipv6 nd proxy inter-access-vlan enable 
[*Device-Vlanif4] quit
[*Device] commit

Configure the IPv6 addresses of hosts.
# Configure the IPv6 address of Host A as 2001:db8:300:400::1/64.

# Configure the IPv6 address of Host B as 2001:db8:300:400::2/64.

# Configure the IPv6 address of Host C as 2001:db8:300:400::3/64.

# Configure the IPv6 address of Host D as 2001:db8:300:400::4/64.
Verify the configuration.
After the configurations are complete, the hosts in sub-VLAN 2 and sub-VLAN 3 can ping each other.

Configuration Files

Device configuration file

#
sysname Device
#
vlan batch 2 to 4
#
vlan 4
 aggregate-vlan
 access-vlan 2 to 3
#
interface Vlanif4
 ipv6 enable
 ipv6 address 2001:DB8:300:400::5/64
 ipv6 nd proxy inter-access-vlan enable
#
interface GigabitEthernet0/1/1
 portswitch
 undo shutdown
 port link-type access
 port default vlan 2
#
interface GigabitEthernet0/1/2
 portswitch
 undo shutdown
 port link-type access
 port default vlan 2
#
interface GigabitEthernet0/1/9
 portswitch
 undo shutdown
 port link-type access
 port default vlan 3
#
interface GigabitEthernet0/1/10
 portswitch
 undo shutdown
 port link-type access
 port default vlan 3
#
return