Example for Configuring 1 to 1 VLAN Mapping for Inter-VLAN Communication

1 to 1 VLAN mapping allows user VLAN IDs and the ISP VLAN ID to be replaced with each other to help users in different VLANs to communicate with each other.

Networking Requirements

Users in different residential compounds use IPTV, VoIP, and Internet services. To simplify management, the network administrator of each residential compound configures a separate VLAN for each type of services. After the configuration, users using the same type of services in different residential compounds belong to different VLANs, but they need to communicate with each other.

On the network shown in Figure 1, the same type of services in residential compounds 1 and 2 belong to different VLANs. It is required that these users communicate with each other at a low operating cost.

Figure 1 Networking diagram for configuring 1 to 1 VLAN mapping

Interfaces 1 through 3 in this example represent GE 0/1/1, GE 0/1/2, and GE 0/1/3, respectively.

Configuration Roadmap

The configuration roadmap is as follows:

Add ports connecting CE1 to residential compound 1 to VLAN 6. Add ports connecting CE2 to residential compound 2 to VLAN 5.
Configure 1 to 1 VLAN mapping on CEs 3 and 4 at the edge of the ISP network to map user VLAN IDs to the ISP VLAN ID to allow users in different VLANs to communicate with each other.

Data Preparation

To complete the configuration, you need the following data:

Number of each port connecting a CE to a user device
Number of the ports interconnecting CEs
VLAN IDs configured on CEs
VLAN ID provided by the ISP

Procedure

Add ports connecting CEs to user devices to specified VLANs.

# Configure CE 1.

<HUAWEI> system-view
[~HUAWEI] sysname CE1
[*HUAWEI] commit
[~CE1] vlan 6
[*CE1-vlan6] quit
[*CE1] interface gigabitethernet 0/1/1
[*CE1-GigabitEthernet0/1/1] undo shutdown
[*CE1-GigabitEthernet0/1/1] portswitch
[*CE1-GigabitEthernet0/1/1] port link-type access
[*CE1-GigabitEthernet0/1/1] port default vlan 6
[*CE1-GigabitEthernet0/1/1] quit
[*CE1] interface gigabitethernet 0/1/2
[*CE1-GigabitEthernet0/1/2] undo shutdown
[*CE1-GigabitEthernet0/1/2] portswitch
[*CE1-GigabitEthernet0/1/2] port link-type access
[*CE1-GigabitEthernet0/1/2] port default vlan 6
[*CE1-GigabitEthernet0/1/2] quit
[*CE1] interface gigabitethernet 0/1/3
[*CE1-GigabitEthernet0/1/3] undo shutdown
[*CE1-GigabitEthernet0/1/3] portswitch
[*CE1-GigabitEthernet0/1/3] port link-type trunk
[*CE1-GigabitEthernet0/1/3] port trunk allow-pass vlan 6
[*CE1-GigabitEthernet0/1/3] commit
[~CE1-GigabitEthernet0/1/3] quit

# Configure CE 2.

<HUAWEI> system-view
[~HUAWEI] sysname CE2
[*HUAWEI] commit
[~CE2] vlan 5
[*CE2-vlan5] quit
[*CE2] interface gigabitethernet 0/1/1
[*CE2-GigabitEthernet0/1/1] undo shutdown
[*CE2-GigabitEthernet0/1/1] portswitch
[*CE2-GigabitEthernet0/1/1] port link-type access
[*CE2-GigabitEthernet0/1/1] port default vlan 5
[*CE2-GigabitEthernet0/1/1] quit
[*CE2] interface gigabitethernet 0/1/2
[*CE2-GigabitEthernet0/1/2] undo shutdown
[*CE2-GigabitEthernet0/1/2] portswitch
[*CE2-GigabitEthernet0/1/2] port link-type access
[*CE2-GigabitEthernet0/1/2] port default vlan 5
[*CE2-GigabitEthernet0/1/2] quit
[*CE2] interface gigabitethernet 0/1/3
[*CE2-GigabitEthernet0/1/3] undo shutdown
[*CE2-GigabitEthernet0/1/3] portswitch
[*CE2-GigabitEthernet0/1/3] port link-type trunk
[*CE2-GigabitEthernet0/1/3] port trunk allow-pass vlan 5
[*CE2-GigabitEthernet0/1/3] commit
[~CE2-GigabitEthernet0/1/3] quit

Configure 1 to 1 VLAN mapping.

# Configure PE 1.

<HUAWEI> system-view
[~HUAWEI] sysname PE1
[*HUAWEI] commit
[~PE1] vlan 10
[*PE1-vlan10] quit
[*PE1] interface gigabitethernet 0/1/1
[*PE1-GigabitEthernet0/1/1] undo shutdown
[*PE1-GigabitEthernet0/1/1] portswitch
[*PE1-GigabitEthernet0/1/1] port link-type trunk
[*PE1-GigabitEthernet0/1/1] port trunk allow-pass vlan 10
[*PE1-GigabitEthernet0/1/1] port vlan-mapping vlan 6 map-vlan 10
[*PE1-GigabitEthernet0/1/1] commit
[~PE1-GigabitEthernet0/1/1] quit

# Configure PE 2.

<HUAWEI> system-view
[~HUAWEI] sysname PE2
[*HUAWEI] commit
[~PE2] vlan 10
[*PE2-vlan10] quit
[*PE2] interface gigabitethernet 0/1/1
[*PE2-GigabitEthernet0/1/1] undo shutdown
[*PE2-GigabitEthernet0/1/1] portswitch
[*PE2-GigabitEthernet0/1/1] port link-type trunk
[*PE2-GigabitEthernet0/1/1] port trunk allow-pass vlan 10
[*PE2-GigabitEthernet0/1/1] port vlan-mapping vlan 5 map-vlan 10
[*PE2-GigabitEthernet0/1/1] commit
[~PE2-GigabitEthernet0/1/1] quit

Verify the configuration.

After completing the configurations, run the display vlan command to check information about 1 to 1 VLAN mapping. Use the display on PE 1 as an example.

[*PE1] display vlan 10
* : management-vlan
---------------------
VLAN ID Type         Status   MAC Learning Broadcast/Multicast/Unicast Property
--------------------------------------------------------------------------------
10      common       enable   enable       forward   forward   forward default
----------------
QinQ-map  Port: GigabitEthernet0/1/1
----------------
Interface                   Physical
GigabitEthernet0/1/1        UP

Users in residential compounds 1 and 2 can communicate with each other.

Configuration Files

Configuration file of CE 1

#
 sysname CE1
#
vlan batch 6
#
interface GigabitEthernet0/1/1
 undo shutdown
 portswitch
 port link-type access
 port default vlan 6
#
interface GigabitEthernet0/1/2
 undo shutdown
 portswitch
 port link-type access
 port default vlan 6
#
interface GigabitEthernet0/1/3
 undo shutdown
 portswitch
 port link-type trunk
 port trunk allow-pass vlan 6
#
return

Configuration file of CE 2

#
 sysname CE2
#
vlan batch 5
#
interface GigabitEthernet0/1/1
 undo shutdown
 portswitch
 port link-type access
 port default vlan 5
#
interface GigabitEthernet0/1/2
 undo shutdown
 portswitch
 port link-type access
 port default vlan 5
#
interface GigabitEthernet0/1/3
 undo shutdown
 portswitch
 port link-type trunk
 port trunk allow-pass vlan 5
#
return

Configuration file of PE 1

#
 sysname PE1
#
vlan batch 10
#
interface GigabitEthernet0/1/1
 undo shutdown
 portswitch
 port link-type trunk
 port trunk allow-pass vlan 10
 port vlan-mapping vlan 6 map-vlan 10
#
return

Configuration file of PE 2

#
 sysname PE2
#
vlan batch 10
#
interface GigabitEthernet0/1/1
 undo shutdown
 portswitch
 port link-type trunk
 port trunk allow-pass vlan 10
 port vlan-mapping vlan 5 map-vlan 10
#
return