Juniper – Segment Routing Traffic Engineering

Again we will use vjunos router for this lab. Aim of the lab is to direct traffic for the VPWS circuit over a certain path. Traffic from PE1 will go via PE4 and traffic from PE3 will go via PE2.

IS-IS is used as the IGP (could use OSPF if preferred) and an out of path route reflector reflects routes to the PE devices.

https://www.juniper.net/documentation/us/en/software/junos/mpls/topics/topic-map/segment-routing-lsp-configuration.html

PE1

set chassis network-services enhanced-ip
set interfaces ge-0/0/0 unit 0 family inet address 1.1.1.1/30
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 4.4.4.2/30
set interfaces ge-0/0/1 unit 0 family iso
set interfaces ge-0/0/1 unit 0 family mpls
set interfaces ge-0/0/2 unit 0 family inet address 1.2.2.1/30
set interfaces ge-0/0/2 unit 0 family iso
set interfaces ge-0/0/3 vlan-tagging
set interfaces ge-0/0/3 encapsulation flexible-ethernet-services
set interfaces ge-0/0/3 unit 545 encapsulation vlan-ccc
set interfaces ge-0/0/3 unit 545 vlan-id 545
set interfaces lo0 unit 0 family inet address 5.5.5.5/32
set interfaces lo0 unit 0 family iso address 49.0000.5555.0000.0000.00
set interfaces lo0 unit 0 family mpls
set routing-instances VPWS instance-type evpn-vpws
set routing-instances VPWS protocols evpn interface ge-0/0/3.545 vpws-service-id local 545
set routing-instances VPWS protocols evpn interface ge-0/0/3.545 vpws-service-id remote 546
set routing-instances VPWS interface ge-0/0/3.545
set routing-instances VPWS route-distinguisher 5.5.5.5:545
set routing-instances VPWS vrf-target target:65400:545
set routing-options router-id 5.5.5.5
set routing-options autonomous-system 65400
set protocols bgp group VPWS type internal
set protocols bgp group VPWS local-address 5.5.5.5
set protocols bgp group VPWS family evpn signaling
set protocols bgp group VPWS neighbor 9.9.9.9
set protocols isis interface ge-0/0/0.0
set protocols isis interface ge-0/0/1.0
set protocols isis interface ge-0/0/2.0
set protocols isis interface lo0.0 passive
set protocols isis source-packet-routing srgb start-label 80000
set protocols isis source-packet-routing srgb index-range 1000
set protocols isis source-packet-routing node-segment ipv4-index 50
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
set protocols isis traffic-engineering l3-unicast-topology
set protocols mpls interface ge-0/0/0.0
set protocols mpls interface ge-0/0/1.0
set protocols mpls interface lo0.0
set protocols source-packet-routing segment-list PE3 hop1 label 80080
set protocols source-packet-routing source-routing-path PE3 to 7.7.7.7
set protocols source-packet-routing source-routing-path PE3 color 100
set protocols source-packet-routing source-routing-path PE3 primary PE3

PE2

set chassis network-services enhanced-ip
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 ge-0/0/2 unit 0 family inet address 1.3.3.1/30
set interfaces ge-0/0/2 unit 0 family iso
set interfaces ge-0/0/3 vlan-tagging
set interfaces ge-0/0/3 encapsulation flexible-ethernet-services
set interfaces ge-0/0/3 unit 2121 encapsulation vlan-ccc
set interfaces ge-0/0/3 unit 2121 vlan-id 2121
set interfaces lo0 unit 0 family inet address 6.6.6.6/32
set interfaces lo0 unit 0 family iso address 49.0000.6666.0000.0000.00
set interfaces lo0 unit 0 family mpls
set routing-options router-id 6.6.6.6
set routing-options autonomous-system 65400
set protocols isis interface ge-0/0/0.0
set protocols isis interface ge-0/0/1.0
set protocols isis interface ge-0/0/2.0
set protocols isis interface lo0.0 passive
set protocols isis source-packet-routing srgb start-label 80000
set protocols isis source-packet-routing srgb index-range 1000
set protocols isis source-packet-routing node-segment ipv4-index 60
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
set protocols mpls interface ge-0/0/0.0
set protocols mpls interface ge-0/0/1.0
set protocols mpls interface lo0.0

PE3

set chassis network-services enhanced-ip
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 ge-0/0/2 unit 0 family inet address 1.4.4.1/30
set interfaces ge-0/0/2 unit 0 family iso
set interfaces ge-0/0/3 vlan-tagging
set interfaces ge-0/0/3 encapsulation flexible-ethernet-services
set interfaces ge-0/0/3 unit 545 encapsulation vlan-ccc
set interfaces ge-0/0/3 unit 545 vlan-id 545
set interfaces lo0 unit 0 family inet address 7.7.7.7/32
set interfaces lo0 unit 0 family iso address 49.0000.7777.0000.0000.00
set interfaces lo0 unit 0 family mpls
set routing-instances VPWS instance-type evpn-vpws
set routing-instances VPWS protocols evpn interface ge-0/0/3.545 vpws-service-id local 546
set routing-instances VPWS protocols evpn interface ge-0/0/3.545 vpws-service-id remote 545
set routing-instances VPWS interface ge-0/0/3.545
set routing-instances VPWS route-distinguisher 7.7.7.7:545
set routing-instances VPWS vrf-target target:65400:545
set routing-options router-id 7.7.7.7
set routing-options autonomous-system 65400
set protocols bgp group VPWS type internal
set protocols bgp group VPWS local-address 7.7.7.7
set protocols bgp group VPWS family evpn signaling
set protocols bgp group VPWS neighbor 9.9.9.9
set protocols isis interface ge-0/0/0.0
set protocols isis interface ge-0/0/1.0
set protocols isis interface ge-0/0/2.0
set protocols isis interface lo0.0 passive
set protocols isis source-packet-routing srgb start-label 80000
set protocols isis source-packet-routing srgb index-range 1000
set protocols isis source-packet-routing node-segment ipv4-index 70
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
set protocols mpls interface ge-0/0/0.0
set protocols mpls interface ge-0/0/1.0
set protocols mpls interface lo0.0
set protocols source-packet-routing segment-list PE1 hop1 label 80060
set protocols source-packet-routing source-routing-path PE1 to 5.5.5.5
set protocols source-packet-routing source-routing-path PE1 color 100
set protocols source-packet-routing source-routing-path PE1 primary PE1

PE4

set chassis network-services enhanced-ip
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 ge-0/0/2 unit 0 family inet address 1.5.5.1/30
set interfaces ge-0/0/2 unit 0 family iso
set interfaces ge-0/0/3 vlan-tagging
set interfaces ge-0/0/3 encapsulation flexible-ethernet-services
set interfaces ge-0/0/3 unit 2121 encapsulation vlan-ccc
set interfaces ge-0/0/3 unit 2121 vlan-id 2121
set interfaces lo0 unit 0 family inet address 8.8.8.8/32
set interfaces lo0 unit 0 family iso address 49.0000.8888.0000.0000.00
set interfaces lo0 unit 0 family mpls
set routing-options router-id 8.8.8.8
set routing-options autonomous-system 65400
set protocols isis interface ge-0/0/0.0
set protocols isis interface ge-0/0/1.0
set protocols isis interface ge-0/0/2.0
set protocols isis interface lo0.0 passive
set protocols isis source-packet-routing srgb start-label 80000
set protocols isis source-packet-routing srgb index-range 1000
set protocols isis source-packet-routing node-segment ipv4-index 80
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
set protocols mpls interface ge-0/0/0.0
set protocols mpls interface ge-0/0/1.0
set protocols mpls interface lo0.0

RR

set interfaces ge-0/0/1 unit 0 family inet address 1.2.2.2/30
set interfaces ge-0/0/1 unit 0 family iso
set interfaces ge-0/0/2 unit 0 family inet address 1.3.3.2/30
set interfaces ge-0/0/2 unit 0 family iso
set interfaces ge-0/0/3 unit 0 family inet address 1.4.4.2/30
set interfaces ge-0/0/3 unit 0 family iso
set interfaces ge-0/0/4 unit 0 family inet address 1.5.5.2/30
set interfaces ge-0/0/4 unit 0 family iso
set interfaces lo0 unit 0 family inet address 9.9.9.9/32
set interfaces lo0 unit 0 family iso address 49.0000.9999.0000.0000.00
set routing-options rib inet.3
set routing-options resolution rib bgp.evpn.0 resolution-ribs inet.0
set routing-options router-id 9.9.9.9
set routing-options autonomous-system 65400
set protocols bgp group VPWS type internal
set protocols bgp group VPWS local-address 9.9.9.9
set protocols bgp group VPWS family evpn signaling
set protocols bgp group VPWS cluster 9.9.9.9
set protocols bgp group VPWS neighbor 5.5.5.5
set protocols bgp group VPWS neighbor 7.7.7.7
set protocols isis interface ge-0/0/1.0
set protocols isis interface ge-0/0/2.0
set protocols isis interface ge-0/0/3.0
set protocols isis interface ge-0/0/4.0
set protocols isis interface lo0.0 passive

If you check the routing table of either PE1 or PE3 you will find a new table called inetcolor.0 as a color has been applied to the traffic engineering.

OSPF has been configured on both CE devices confirming the VPWS circuit is up.