Configuration

Topology

The sample topology includes Edge nodes (PE1 and PE2), core Node (P1), and Customer Edge nodes (CE1 and CE2).

Figure 37. BVI Interface Topology

Before configuring BVI-6vPE, meet all the pre-requisite for the following nodes:

• Edge nodes: PE1 and PE2
• Core nodes: P1, P3, and P4

Configure CE1 Router

1. Set up the interface with VLAN encapsulation and assign an IP address.
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CE1(config)#interface xe20.101
CE1(config-if)#encapsulation dot1q 101
CE1(config-if)#ipv6 address 2001::2/64
CE1(config-if)#commit
CE1(config-if)#exit
2. BGP Configuration with a neighbor in the same AS (200).
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CE1(config)# router bgp 200
CE1(config-router)# neighbor 2001::1 remote-as 100
CE1(config-router)#address-family ipv4 unicast
CE1(config-router-af)#neighbor 2001::1 activate
CE1(config-router-af)#exit-address-family
CE1(config-router)#commit
CE1(config-router)#exit

Configure PE1 Router

1. Create a VRF instance (VRF101) and define route targets.
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PE1(config)# ip vrf VRF101
PE1(config-vrf)# rd 10.12.183.1:100
PE1(config-vrf)# route-target both 100:101
PE1(config-vrf)# commit
PE1(config-vrf)# exit
2. Configure the access port with VLAN encapsulation and enable rewriting.
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PE1(config)#interface xe20.101 switchport
PE1(config-if)#encapsulation dot1q 101
PE1(config-if)#rewrite pop
PE1(config-if)# commit
PE1(config-if)# exit
3. Set up a BVI for VRF forwarding.
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PE1(config)# interface bvi101
PE1(config-if)#ip vrf forwarding VRF101
PE1(config-if)#ipv6 address 2001::1/64
PE1(config-if)# commit
PE1(config-if)# exit
4. Configure BGP with internal (PE) and external (CE) neighbors.
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PE1(config)# router bgp 100
PE1(config-router)# neighbor 10.12.183.3 remote-as 100
PE1(config-router)# neighbor 10.12.183.3 update-source lo
PE1(config-router)#address-family ipv4 unicast
PE1(config-router-af)#neighbor 10.12.183.3 activate
PE1(config-router-af)#exit-address-family
PE1(config-router)#address-family vpnv4 unicast
PE1(config-router-af)#neighbor 10.12.183.3 activate
PE1(config-router-af)#exit-address-family
5. Enable VPNv4 and redistribute connected routes.
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PE1(config-router)#address-family ipv4 vrf VRF101
PE1(config-router-af)#redistribute connected
PE1(config-router-af)#neighbor 2001::2 remote-as 200
PE1(config-router-af)#neighbor 2001::2 activate
PE1(config-router-af)#exit-address-family
PE1(config-router)#commit
PE1(config-router)#exit
6. Set up a bridge domain to associate the interface with BVI.
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PE1(config)# bridge-domain 101
PE1(config-bridge-domain)#interface xe20.101
PE1(config-bridge-domain)#routed-interface bvi101
PE1(config-bridge-domain)#commit
PE1(config-bridge-domain)#exit

Configure PE2 Router

1. Create the same VRF instance (VRF101) with route targets.
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PE2(config)# ip vrf VRF101
PE2(config-vrf)# rd 10.12.183.3:100
PE2(config-vrf)# route-target both 100:101
PE2(config-vrf)#commit
PE2(config-vrf)#exit
2. Configure the access port with VLAN encapsulation and VRF forwarding.
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PE2(config)# interface xe30.101
PE2(config-if)#encapsulation dot1q 101
PE2(config-if)#ip vrf forwarding VRF101
PE2(config-if)#ipv6 address 3001::1/64
PE2(config-f)# commit
PE2(config-f)# exit
3. Assign an IP address to the interface.
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PE2(config)# router bgp 100
PE2(config-router)# neighbor 10.12.183.1 remote-as 100
PE2(config-router)# neighbor 10.12.183.1 update-source lo
PE2(config-router)#address-family ipv4 unicast
PE2(config-router-af)#neighbor 10.12.183.1 activate
PE2(config-router-af)#exit-address-family
4. Configure BGP with internal (PE) and external (CE) neighbors.
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PE2(config-router)#address-family vpnv4 unicast
PE2(config-router-af)#neighbor 10.12.183.1 activate
PE2(config-router-af)#exit-address-family
5. Enable VPNv4 and redistribute connected routes.
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PE2(config-router)#address-family ipv4 vrf VRF101
PE2(config-router-af)#redistribute connected
PE2(config-router-af)#neighbor 3001::2 remote-as 200
PE2(config-router-af)#neighbor 3001::2 activate
PE2(config-router-af)#exit-address-family
PE2(config-router)#commit
PE2(config-router)#exit

Configure CE2 Router

1. Set up the interface with VLAN encapsulation and assign an IP address.
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CE2#configure terminal
CE2(config)#interface xe30.101
CE2(config-if)#encapsulation dot1q 101
CE2(config-if)#ipv6 address 3001::2/64
CE2(config-if)#commit
CE2(config-if)#exit
2. Configure BGP with a neighbor in the same AS (200).
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CE2(config)# router bgp 200
CE2(config-router)#neighbor 3001::1 remote-as 100
CE2(config-router)#address-family ipv4 unicast
CE2(config-router-af)#neighbor 3001::1 activate
CE2(config-router-af)#exit-address-family
CE2(config-router)#commit
CE2(config-router)#exit