One-to-two and two-to-two VLAN mapping configuration example

As shown in Figure 80:

• Two VPN A branches, Site 1 and Site 2, are in VLAN 5 and VLAN 6, respectively.

• The two sites use different VPN access services from different service providers, SP 1 and SP 2.

• SP 1 assigns VLAN 100 to Site 1 and Site 2. SP 2 assigns VLAN 200 to Site 1 and Site 2.

Configure one-to-two VLAN mappings and two-to-two VLAN mappings to enable the two branches to communicate across networks SP 1 and SP 2.

1. Configure PE 1:

   # Create VLANs 5 and 100.

   <PE1> system-view
   [PE1] vlan 5
   [PE1-vlan5] quit
   [PE1] vlan 100
   [PE1-vlan100] quit
   

   # Configure a one-to-two VLAN mapping on the customer-side port (HundredGigE 1/0/1) to add SVLAN tag 100 to packets from VLAN 5.

   [PE1] interface hundredgige 1/0/1
   [PE1-HundredGigE1/0/1] vlan mapping nest single 5 nested-vlan 100
   

   # Configure HundredGigE 1/0/1 as a hybrid port.

   [PE1-HundredGigE1/0/1] port link-type hybrid
   

   # Assign HundredGigE 1/0/1 to VLAN 5 as a tagged member.

   [PE1-HundredGigE1/0/1] port hybrid vlan 5 tagged
   

   # Assign HundredGigE 1/0/1 to VLAN 100 as an untagged member.

   [PE1-HundredGigE1/0/1] port hybrid vlan 100 untagged
   [PE1-HundredGigE1/0/1] quit
   

   # Configure the network-side port (HundredGigE 1/0/2) as a trunk port.

   [PE1] interface hundredgige 1/0/2
   [PE1-HundredGigE1/0/2] port link-type trunk
   

   # Assign HundredGigE 1/0/2 to VLAN 100.

   [PE1-HundredGigE1/0/2] port trunk permit vlan 100
   [PE1-HundredGigE1/0/2] quit
   

2. Configure PE 2:

   # Create VLAN 100.

   <PE2> system-view
   [PE2] vlan 100
   [PE2-vlan100] quit
   

   # Configure HundredGigE 1/0/1 as a trunk port.

   [PE2] interface hundredgige 1/0/1
   [PE2-HundredGigE1/0/1] port link-type trunk
   

   # Assign HundredGigE 1/0/1 to VLAN 100.

   [PE2-HundredGigE1/0/1] port trunk permit vlan 100
   [PE2-HundredGigE1/0/1] quit
   

   # Configure HundredGigE 1/0/2 as a trunk port.

   [PE2] interface hundredgige 1/0/2
   [PE2-HundredGigE1/0/2] port link-type trunk
   

   # Assign HundredGigE 1/0/2 to VLAN 100.

   [PE2-HundredGigE1/0/2] port trunk permit vlan 100
   [PE2-HundredGigE1/0/2] quit
   

3. Configure PE 3:

   # Create VLANs 5, 6, 100, and 200.

   <PE3> system-view
   [PE3] vlan 5 to 6
   [PE3] vlan 100
   [PE3-vlan100] quit
   [PE3] vlan 200
   [PE3-vlan200] quit
   

   # Configure HundredGigE 1/0/1 as a trunk port.

   [PE3] interface hundredgige 1/0/1
   [PE3-HundredGigE1/0/1] port link-type trunk
   

   # Assign HundredGigE 1/0/1 to VLANs 100 and 200.

   [PE3-HundredGigE1/0/1] port trunk permit vlan 100 200
   

   # Configure a two-to-two VLAN mapping on HundredGigE 1/0/1 to map SVLAN 100 and CVLAN 5 to SVLAN 200 and CVLAN 6.

   [PE3-HundredGigE1/0/1] vlan mapping tunnel 100 5 translated-vlan 200 6
   [PE3-HundredGigE1/0/1] quit
   

   # Configure HundredGigE 1/0/2 as a trunk port.

   [PE3] interface hundredgige 1/0/2
   [PE3-HundredGigE1/0/2] port link-type trunk
   

   # Assign HundredGigE 1/0/2 to VLAN 200.

   [PE3-HundredGigE1/0/2] port trunk permit vlan 200
   [PE3-HundredGigE1/0/2] quit
   

4. Configure PE 4:

   # Create VLANs 6 and 200.

   <PE4> system-view
   [PE4] vlan 6
   [PE4-vlan6] quit
   [PE4] vlan 200
   [PE4-vlan200] quit
   

   # Configure the network-side port (HundredGigE 1/0/1) as a trunk port.

   [PE4] interface hundredgige 1/0/1
   [PE4-HundredGigE1/0/1] port link-type trunk
   

   # Assign HundredGigE 1/0/1 to VLAN 200.

   [PE4-HundredGigE1/0/1] port trunk permit vlan 200
   [PE4-HundredGigE1/0/1] quit
   

   # Configure the customer-side port (HundredGigE 1/0/2) as a hybrid port.

   [PE4] interface hundredgige 1/0/2
   [PE4-HundredGigE1/0/2] port link-type hybrid
   

   # Assign HundredGigE 1/0/2 to VLAN 6 as a tagged member.

   [PE4-HundredGigE1/0/2] port hybrid vlan 6 tagged
   

   # Assign HundredGigE 1/0/2 to VLAN 200 as an untagged member.

   [PE4-HundredGigE1/0/2] port hybrid vlan 200 untagged
   

   # Configure a one-to-two VLAN mapping on HundredGigE 1/0/2 to add SVLAN tag 200 to packets from VLAN 6.

   [PE4-HundredGigE1/0/2] vlan mapping nest single 6 nested-vlan 200
   [PE4-HundredGigE1/0/2] quit
   

# Verify VLAN mapping information on PE 1.

[PE1] display vlan mapping
Interface HundredGigE1/0/1:
  Outer VLAN    Inner VLAN    Translated Outer VLAN    Translated Inner VLAN
  5             N/A           100                      5

# Verify VLAN mapping information on PE 3.

[PE3] display vlan mapping
Interface HundredGigE1/0/1:
  Outer VLAN    Inner VLAN    Translated Outer VLAN    Translated Inner VLAN
  100           5             200                      6

# Verify VLAN mapping information on PE 4.

[PE4] display vlan mapping
Interface HundredGigE1/0/2:
  Outer VLAN    Inner VLAN    Translated Outer VLAN    Translated Inner VLAN
  6             N/A           200                      6