Juniper Carrier of Carriers BGP L2VPN

Establish a layer 2 circuit between the 2 CE devices, traversing 3 separate AS’s.

https://www.juniper.net/documentation/us/en/software/junos/vpn-l3/topics/topic-map/l3-vpns-carrier-carrier.html

PE1

set interfaces ge-0/0/0 vlan-tagging
set interfaces ge-0/0/0 encapsulation flexible-ethernet-services
set interfaces ge-0/0/0 unit 3222 encapsulation vlan-ccc
set interfaces ge-0/0/0 unit 3222 vlan-id 3222
set interfaces ge-0/0/2 unit 0 family inet address 1.1.1.1/30
set interfaces ge-0/0/2 unit 0 family iso
set interfaces ge-0/0/2 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 5.5.5.5/32
set interfaces lo0 unit 0 family iso address 49.0000.5555.5555.5555.00
set interfaces lo0 unit 0 family mpls
set routing-options router-id 5.5.5.5
set routing-options autonomous-system 65200
set protocols mpls interface all
set protocols bgp group external type external
set protocols bgp group external multihop
set protocols bgp group external local-address 5.5.5.5
set protocols bgp group external family l2vpn signaling
set protocols bgp group external peer-as 65600
set protocols bgp group external neighbor 11.11.11.11
set protocols bgp group internal type internal
set protocols bgp group internal local-address 5.5.5.5
set protocols bgp group internal family inet labeled-unicast resolve-vpn
set protocols bgp group internal neighbor 6.6.6.6
set protocols isis interface ge-0/0/2.0
set protocols isis interface lo0.0
set protocols ldp interface all
set routing-instances cust1 instance-type l2vpn
set routing-instances cust1 interface ge-0/0/0.3222
set routing-instances cust1 route-distinguisher 5.5.5.5:1
set routing-instances cust1 vrf-target target:65200:1
set routing-instances cust1 protocols l2vpn encapsulation-type ethernet-vlan
set routing-instances cust1 protocols l2vpn site cust1 site-identifier 1
set routing-instances cust1 protocols l2vpn site cust1 interface ge-0/0/0.3222

ASBR1

set interfaces ge-0/0/0 unit 0 family inet address 1.1.1.2/30
set interfaces ge-0/0/0 unit 0 family iso
set interfaces ge-0/0/0 unit 0 family mpls
set interfaces ge-0/0/1 unit 0 family inet address 2.2.2.1/30
set interfaces ge-0/0/1 unit 0 family iso
set interfaces ge-0/0/1 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 6.6.6.6/32
set interfaces lo0 unit 0 family iso address 49.0000.6666.6666.6666.00
set interfaces lo0 unit 0 family mpls
set routing-options router-id 6.6.6.6
set routing-options autonomous-system 65200
set protocols mpls interface all
set protocols bgp group internal type internal
set protocols bgp group internal local-address 6.6.6.6
set protocols bgp group internal family inet labeled-unicast
set protocols bgp group internal neighbor 5.5.5.5
set protocols bgp group external type external
set protocols bgp group external family inet labeled-unicast
set protocols bgp group external export PE1_LOOPBACK
set protocols bgp group external peer-as 65400
set protocols bgp group external neighbor 2.2.2.2
set protocols isis interface ge-0/0/0.0
set protocols isis interface lo0.0
set protocols ldp interface all
set policy-options policy-statement PE1_LOOPBACK from route-filter 5.5.5.5/32 exact
set policy-options policy-statement PE1_LOOPBACK then accept

CoC ASBR1

set interfaces ge-0/0/0 unit 0 family inet address 2.2.2.2/30
set interfaces ge-0/0/0 unit 0 family iso
set interfaces ge-0/0/0 unit 0 family mpls
set interfaces ge-0/0/1 unit 0 family inet address 3.3.3.1/30
set interfaces ge-0/0/1 unit 0 family iso
set interfaces ge-0/0/1 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 7.7.7.7/32
set interfaces lo0 unit 0 family iso address 49.0000.7777.7777.0000.00
set interfaces lo0 unit 0 family mpls
set routing-options router-id 7.7.7.7
set routing-options autonomous-system 65400
set protocols mpls interface all
set protocols bgp group external type external
set protocols bgp group external family inet labeled-unicast
set protocols bgp group external peer-as 65200
set protocols bgp group external neighbor 2.2.2.1
set protocols bgp group internal type internal
set protocols bgp group internal local-address 7.7.7.7
set protocols bgp group internal family inet labeled-unicast
set protocols bgp group internal neighbor 8.8.8.8 
set protocols isis interface ge-0/0/1.0
set protocols isis interface ge-0/0/2.0
set protocols isis interface lo0.0
set protocols ldp interface all

CoC Core

set interfaces ge-0/0/0 unit 0 family inet address 3.3.3.2/30
set interfaces ge-0/0/0 unit 0 family iso
set interfaces ge-0/0/0 unit 0 family mpls
set interfaces ge-0/0/1 unit 0 family inet address 4.4.4.1/30
set interfaces ge-0/0/1 unit 0 family iso
set interfaces ge-0/0/1 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 8.8.8.8/32
set interfaces lo0 unit 0 family iso address 49.0000.8888.8888.0000.00
set interfaces lo0 unit 0 family mpls
set routing-options router-id 8.8.8.8
set routing-options autonomous-system 65400
set protocols mpls interface all
set protocols bgp group internal type internal
set protocols bgp group internal local-address 8.8.8.8
set protocols bgp group internal family inet labeled-unicast
set protocols bgp group internal cluster 8.8.8.8
set protocols bgp group internal neighbor 9.9.9.9
set protocols bgp group internal neighbor 7.7.7.7
set protocols isis interface ge-0/0/0.0
set protocols isis interface ge-0/0/1.0
set protocols isis interface lo0.0
set protocols ldp interface all

CoC ASBR2

set interfaces ge-0/0/0 unit 0 family inet address 4.4.4.2/30
set interfaces ge-0/0/0 unit 0 family iso
set interfaces ge-0/0/0 unit 0 family mpls
set interfaces ge-0/0/1 unit 0 family inet address 5.5.5.1/30
set interfaces ge-0/0/1 unit 0 family iso
set interfaces ge-0/0/1 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 9.9.9.9/32
set interfaces lo0 unit 0 family iso address 49.0000.9999.9999.0000.00
set interfaces lo0 unit 0 family mpls
set routing-options router-id 9.9.9.9
set routing-options autonomous-system 65400
set protocols mpls interface all
set protocols bgp group int type internal
set protocols bgp group int local-address 9.9.9.9
set protocols bgp group int family inet labeled-unicast
set protocols bgp group int neighbor 8.8.8.8
set protocols bgp group external type external
set protocols bgp group external family inet labeled-unicast
set protocols bgp group external peer-as 65600
set protocols bgp group external neighbor 5.5.5.2
set protocols isis interface ge-0/0/0.0
set protocols isis interface lo0.0
set protocols ldp interface all

ASBR2

set interfaces ge-0/0/0 unit 0 family inet address 5.5.5.2/30
set interfaces ge-0/0/0 unit 0 family iso
set interfaces ge-0/0/0 unit 0 family mpls
set interfaces ge-0/0/1 unit 0 family inet address 6.6.6.1/30
set interfaces ge-0/0/1 unit 0 family iso
set interfaces ge-0/0/1 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 10.10.10.10/32
set interfaces lo0 unit 0 family iso address 49.0000.1010.1010.0000.00
set interfaces lo0 unit 0 family mpls
set routing-options router-id 10.10.10.10
set routing-options autonomous-system 65600
set protocols mpls interface all
set protocols bgp group internal type internal
set protocols bgp group internal local-address 10.10.10.10
set protocols bgp group internal family inet labeled-unicast
set protocols bgp group internal neighbor 11.11.11.11
set protocols bgp group external type external
set protocols bgp group external family inet labeled-unicast
set protocols bgp group external export PE2_LOOPBACK
set protocols bgp group external peer-as 65400
set protocols bgp group external neighbor 5.5.5.1
set protocols isis interface ge-0/0/1.0
set protocols isis interface lo0.0
set protocols ldp interface all
set policy-options policy-statement PE2_LOOPBACK from route-filter 11.11.11.11/32 exact
set policy-options policy-statement PE2_LOOPBACK then accept

PE2

set interfaces ge-0/0/0 unit 0 family inet address 6.6.6.2/30
set interfaces ge-0/0/0 unit 0 family iso
set interfaces ge-0/0/0 unit 0 family mpls
set interfaces ge-0/0/1 vlan-tagging
set interfaces ge-0/0/1 encapsulation flexible-ethernet-services
set interfaces ge-0/0/1 unit 3222 encapsulation vlan-ccc
set interfaces ge-0/0/1 unit 3222 vlan-id 3222
set interfaces lo0 unit 0 family inet address 11.11.11.11/32
set interfaces lo0 unit 0 family iso address 49.0000.1111.1111.0000.00
set interfaces lo0 unit 0 family mpls
set routing-options router-id 11.11.11.11
set routing-options autonomous-system 65600
set protocols mpls interface all
set protocols bgp group internal type internal
set protocols bgp group internal local-address 11.11.11.11
set protocols bgp group internal family inet labeled-unicast resolve-vpn
set protocols bgp group internal neighbor 10.10.10.10
set protocols bgp group external type external
set protocols bgp group external multihop
set protocols bgp group external local-address 11.11.11.11
set protocols bgp group external family l2vpn signaling
set protocols bgp group external peer-as 65200
set protocols bgp group external neighbor 5.5.5.5
set protocols isis interface ge-0/0/0.0
set protocols isis interface lo0.0
set protocols ldp interface all
set routing-instances cust1 instance-type l2vpn
set routing-instances cust1 interface ge-0/0/1.3222
set routing-instances cust1 route-distinguisher 11.11.11.11:1
set routing-instances cust1 vrf-target target:65200:1
set routing-instances cust1 protocols l2vpn encapsulation-type ethernet-vlan
set routing-instances cust1 protocols l2vpn site cust1 site-identifier 2
set routing-instances cust1 protocols l2vpn site cust1 interface ge-0/0/1.3222

OSPF has been configured on both CE devices and a neighbourship has formed confirming that the layer 2 circuit is up.