Juniper – Segment Routing EVPN E-Tree

nick Juniper

Rather than the vMX, vJunos router is used for this lab & a Route Reflector is thrown into the mix to make things a little more interesting. IS-IS used as the IGP. CE1 is root & CE2 & CE3 are configured as leaves so they are not able to forward traffic to each other.

https://www.juniper.net/documentation/us/en/software/junos/evpn/topics/example/example-etree-service-evpn-configuring.html

_Exports_eve-ng_export-20241222-131321Download

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 flexible-vlan-tagging
set interfaces ge-0/0/3 encapsulation flexible-ethernet-services
set interfaces ge-0/0/3 unit 545 encapsulation vlan-bridge
set interfaces ge-0/0/3 unit 545 vlan-id 545
set interfaces ge-0/0/3 unit 545 etree-ac-role root
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 ETREE instance-type evpn
set routing-instances ETREE protocols evpn interface ge-0/0/3.545
set routing-instances ETREE protocols evpn evpn-etree
set routing-instances ETREE vlan-id 545
set routing-instances ETREE interface ge-0/0/3.545
set routing-instances ETREE route-distinguisher 5.5.5.5:545
set routing-instances ETREE vrf-target target:65400:545
set routing-options router-id 5.5.5.5
set routing-options autonomous-system 65400
set protocols bgp group ETREE type internal
set protocols bgp group ETREE local-address 5.5.5.5
set protocols bgp group ETREE family evpn signaling
set protocols bgp group ETREE 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 mpls interface ge-0/0/0.0
set protocols mpls interface ge-0/0/1.0
set protocols mpls interface lo0.0

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 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 flexible-vlan-tagging
set interfaces ge-0/0/3 encapsulation flexible-ethernet-services
set interfaces ge-0/0/3 unit 545 encapsulation vlan-bridge
set interfaces ge-0/0/3 unit 545 vlan-id 545
set interfaces ge-0/0/3 unit 545 etree-ac-role leaf
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 ETREE instance-type evpn
set routing-instances ETREE protocols evpn interface ge-0/0/3.545
set routing-instances ETREE protocols evpn evpn-etree
set routing-instances ETREE vlan-id 545
set routing-instances ETREE interface ge-0/0/3.545
set routing-instances ETREE route-distinguisher 7.7.7.7:545
set routing-instances ETREE vrf-target target:65400:545
set routing-options router-id 7.7.7.7
set routing-options autonomous-system 65400
set protocols bgp group ETREE type internal
set protocols bgp group ETREE local-address 7.7.7.7
set protocols bgp group ETREE family evpn signaling
set protocols bgp group ETREE 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

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 flexible-vlan-tagging
set interfaces ge-0/0/3 encapsulation flexible-ethernet-services
set interfaces ge-0/0/3 unit 545 encapsulation vlan-bridge
set interfaces ge-0/0/3 unit 545 vlan-id 545
set interfaces ge-0/0/3 unit 545 etree-ac-role leaf
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-instances ETREE instance-type evpn
set routing-instances ETREE protocols evpn interface ge-0/0/3.545
set routing-instances ETREE protocols evpn evpn-etree
set routing-instances ETREE vlan-id 545
set routing-instances ETREE interface ge-0/0/3.545
set routing-instances ETREE route-distinguisher 8.8.8.8:545
set routing-instances ETREE vrf-target target:65400:545
set routing-options router-id 8.8.8.8
set routing-options autonomous-system 65400
set protocols bgp group ETREE type internal
set protocols bgp group ETREE local-address 8.8.8.8
set protocols bgp group ETREE family evpn signaling
set protocols bgp group ETREE 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 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 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 ETREE type internal
set protocols bgp group ETREE local-address 9.9.9.9
set protocols bgp group ETREE family evpn signaling
set protocols bgp group ETREE cluster 9.9.9.9
set protocols bgp group ETREE neighbor 5.5.5.5
set protocols bgp group ETREE neighbor 7.7.7.7
set protocols bgp group ETREE 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 ge-0/0/3.0
set protocols isis interface ge-0/0/4.0
set protocols isis interface lo0.0 passive

The attachment circuits will now be up

OSPF has been configured on the CE devices. As root, CE1 will be neighbours with both CE2 & CE3

Leaves will only be neighbours with root. Output from CE2 confirms this.

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