Juniper vJunosEvolved – L3VPN

An example Juniper L3VPN configuration example. IS-IS underlay and BGP between PE’s & CE’s.

https://www.juniper.net/documentation/us/en/software/junos/vpn-l3/topics/example/mpls-qfx-series-vpn-layer3.html

vEVO1

set interfaces et-0/0/0 unit 0 family inet address 1.1.1.1/30
set interfaces et-0/0/0 unit 0 family iso
set interfaces et-0/0/0 unit 0 family mpls
set interfaces et-0/0/1 unit 0 family inet address 6.6.6.2/30
set interfaces et-0/0/1 unit 0 family iso
set interfaces et-0/0/1 unit 0 family mpls
set interfaces et-0/0/2 unit 0 family inet address 10.1.1.1/24
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 policy-options policy-statement nhs term 1 from protocol bgp
set policy-options policy-statement nhs term 1 then next-hop self
set routing-instances cust1 instance-type vrf
set routing-instances cust1 protocols bgp group cust1 type external
set routing-instances cust1 protocols bgp group cust1 as-override
set routing-instances cust1 protocols bgp group cust1 neighbor 10.1.1.254 peer-as 65444
set routing-instances cust1 interface et-0/0/2.0
set routing-instances cust1 route-distinguisher 5.5.5.5:1
set routing-instances cust1 vrf-target target:65400:1
set routing-instances cust1 vrf-table-label
set routing-options router-id 5.5.5.5
set routing-options autonomous-system 65400
set protocols bgp group overlay type internal
set protocols bgp group overlay local-address 5.5.5.5
set protocols bgp group overlay family inet unicast
set protocols bgp group overlay family inet-vpn unicast
set protocols bgp group overlay export nhs
set protocols bgp group overlay neighbor 6.6.6.6
set protocols bgp group overlay neighbor 8.8.8.8
set protocols isis interface all
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
set protocols ldp interface all
set protocols mpls interface all

vEVO2

set interfaces et-0/0/0 unit 0 family inet address 6.6.6.1/30
set interfaces et-0/0/0 unit 0 family iso
set interfaces et-0/0/0 unit 0 family mpls
set interfaces et-0/0/1 unit 0 family inet address 2.2.2.1/30
set interfaces et-0/0/1 unit 0 family iso
set interfaces et-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 policy-options policy-statement nhs term 1 from protocol bgp
set policy-options policy-statement nhs term 1 then next-hop self
set routing-options router-id 6.6.6.6
set routing-options autonomous-system 65400
set protocols bgp group overlay type internal
set protocols bgp group overlay local-address 6.6.6.6
set protocols bgp group overlay family inet unicast
set protocols bgp group overlay family inet-vpn unicast
set protocols bgp group overlay export nhs
set protocols bgp group overlay cluster 6.6.6.6
set protocols bgp group overlay neighbor 5.5.5.5
set protocols bgp group overlay neighbor 9.9.9.9
set protocols isis interface all
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
set protocols ldp interface all
set protocols mpls interface all

vEVO3

set interfaces et-0/0/0 unit 0 family inet address 1.1.1.2/30
set interfaces et-0/0/0 unit 0 family iso
set interfaces et-0/0/0 unit 0 family mpls
set interfaces et-0/0/1 unit 0 family inet address 3.3.3.2/30
set interfaces et-0/0/1 unit 0 family iso
set interfaces et-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 49.0000.8888.8888.8888.00
set interfaces lo0 unit 0 family mpls
set policy-options policy-statement nhs term 1 from protocol bgp
set policy-options policy-statement nhs term 1 then next-hop self
set routing-options router-id 8.8.8.8
set routing-options autonomous-system 65400
set protocols bgp group overlay type internal
set protocols bgp group overlay local-address 8.8.8.8
set protocols bgp group overlay family inet unicast
set protocols bgp group overlay family inet-vpn unicast
set protocols bgp group overlay export nhs
set protocols bgp group overlay cluster 8.8.8.8
set protocols bgp group overlay neighbor 7.7.7.7
set protocols bgp group overlay neighbor 5.5.5.5
set protocols isis interface all
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
set protocols ldp interface all
set protocols mpls interface all

vEVO4

set interfaces et-0/0/0 unit 0 family inet address 3.3.3.1/30
set interfaces et-0/0/0 unit 0 family iso
set interfaces et-0/0/0 unit 0 family mpls
set interfaces et-0/0/1 unit 0 family inet address 4.4.4.2/30
set interfaces et-0/0/1 unit 0 family iso
set interfaces et-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 49.0000.7777.7777.7777.00
set interfaces lo0 unit 0 family mpls
set policy-options policy-statement nhs term 1 from protocol bgp
set policy-options policy-statement nhs term 1 then next-hop self
set routing-options router-id 7.7.7.7
set routing-options autonomous-system 65400
set protocols bgp group overlay type internal
set protocols bgp group overlay local-address 7.7.7.7
set protocols bgp group overlay family inet unicast
set protocols bgp group overlay family inet-vpn unicast
set protocols bgp group overlay export nhs
set protocols bgp group overlay neighbor 9.9.9.9
set protocols bgp group overlay neighbor 8.8.8.8
set protocols isis interface all
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
set protocols ldp interface all
set protocols mpls interface all

vEVO5

set interfaces et-0/0/0 unit 0 family inet address 4.4.4.1/30
set interfaces et-0/0/0 unit 0 family iso
set interfaces et-0/0/0 unit 0 family mpls
set interfaces et-0/0/1 unit 0 family inet address 2.2.2.2/30
set interfaces et-0/0/1 unit 0 family iso
set interfaces et-0/0/1 unit 0 family mpls
set interfaces et-0/0/2 unit 0 family inet address 10.10.10.1/24
set interfaces lo0 unit 0 family inet address 9.9.9.9/32
set interfaces lo0 unit 0 family iso address 49.0000.9999.9999.9999.00
set interfaces lo0 unit 0 family mpls
set policy-options policy-statement nhs term 1 from protocol bgp
set policy-options policy-statement nhs term 1 then next-hop self
set routing-instances cust1 instance-type vrf
set routing-instances cust1 protocols bgp group cust1 type external
set routing-instances cust1 protocols bgp group cust1 as-override
set routing-instances cust1 protocols bgp group cust1 neighbor 10.10.10.254 peer-as 65444
set routing-instances cust1 interface et-0/0/2.0
set routing-instances cust1 route-distinguisher 9.9.9.9:1
set routing-instances cust1 vrf-target target:65400:1
set routing-instances cust1 vrf-table-label
set routing-options router-id 9.9.9.9
set routing-options autonomous-system 65400
set protocols bgp group overlay type internal
set protocols bgp group overlay local-address 9.9.9.9
set protocols bgp group overlay family inet unicast
set protocols bgp group overlay family inet-vpn unicast
set protocols bgp group overlay export nhs
set protocols bgp group overlay neighbor 7.7.7.7
set protocols bgp group overlay neighbor 6.6.6.6
set protocols isis interface all
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
set protocols ldp interface all
set protocols mpls interface all

BGP is configured between the CE & PE devices and loopbacks have been configured on the CE’s with addresses of 111.111.111.111 & 222.222.222.222 respectively. These are being redistributed into BGP and you should now see the opposing loopback in the route table.