Segment Routing Archives - Page 2 of 2

You will need a trial license from Juniper for this lab, which can be obtained from the below URL.

https://www.juniper.net/gb/en/dm/vmx-trial-download.html

BGP is used between the CE & PE devices. Could use OSPF but would then need a sham link between CE devices to stop routes being shown as external routes.

https://www.juniper.net/gb/en/research-topics/what-is-segment-routing.html

Exports_eve-ng_export-20240505-163439 Download

PE1

set chassis network-services enhanced-ip
set interfaces ge-0/0/0 unit 0 family inet address 10.1.1.1/24
set interfaces ge-0/0/1 unit 0 family inet
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 65400
set protocols mpls interface all
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 unicast
set protocols bgp group internal family inet-vpn unicast
set protocols bgp group internal neighbor 8.8.8.8
set protocols isis source-packet-routing srgb start-label 800000
set protocols isis source-packet-routing srgb index-range 9000
set protocols isis source-packet-routing node-segment ipv4-index 500
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
set protocols isis interface ge-0/0/2.0
set protocols isis interface lo0.0
set routing-instances cust1 instance-type vrf
set routing-instances cust1 interface ge-0/0/0.0
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-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 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 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 protocols mpls interface all
set protocols isis source-packet-routing srgb start-label 800000
set protocols isis source-packet-routing srgb index-range 9000
set protocols isis source-packet-routing node-segment ipv4-index 501
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
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 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 lo0 unit 0 family inet address 33.33.33.33/32
set interfaces lo0 unit 0 family iso address 49.0000.3333.3333.0000.00
set interfaces lo0 unit 0 family mpls
set protocols mpls interface all
set protocols isis source-packet-routing srgb start-label 800000
set protocols isis source-packet-routing srgb index-range 9000
set protocols isis source-packet-routing node-segment ipv4-index 502
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
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 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 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 protocols mpls interface all
set protocols isis source-packet-routing srgb start-label 800000
set protocols isis source-packet-routing srgb index-range 9000
set protocols isis source-packet-routing node-segment ipv4-index 503
set protocols isis level 1 disable
set protocols isis level 2 wide-metrics-only
set protocols isis interface ge-0/0/0.0
set protocols isis interface ge-0/0/1.0
set protocols isis interface lo0.0

PE2

set chassis network-services enhanced-ip
set interfaces ge-0/0/0 unit 0 family inet address 10.10.10.1/24
set interfaces ge-0/0/2 unit 0 family inet address 4.4.4.2/30
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 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 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 unicast
set protocols bgp group internal family inet-vpn unicast
set protocols bgp group internal neighbor 5.5.5.5
set protocols isis source-packet-routing srgb start-label 800000
set protocols isis source-packet-routing srgb index-range 9000
set protocols isis source-packet-routing node-segment ipv4-index 504
set protocols isis level 1 disable
set protocols isis interface ge-0/0/2.0
set protocols isis interface lo0.0
set routing-instances cust1 instance-type vrf
set routing-instances cust1 interface ge-0/0/0.0
set routing-instances cust1 route-distinguisher 8.8.8.8:1
set routing-instances cust1 vrf-target target:65400:1
set routing-instances cust1 vrf-table-label
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

The L3VPN will now be up and the CE devices receiving routes from each other. You may need to reboot the vMX devices before you see the routes.

IS-IS used for the segment routing. 2 Cisco vIOS devices for the CE’s, with OSPF configured on each

https://www.arista.com/en/solutions/mpls-segment-routing

Exports_eve-ng_export-20240407-091304 Download

PE1

service routing protocols model multi-agent

hostname pe1
  
vlan 3333

interface Ethernet1
switchport trunk allowed vlan 3333
switchport mode trunk

interface Ethernet2
no switchport
ip address 1.1.1.1/30
isis enable 1

interface Loopback0
ip address 5.5.5.5/32
node-segment ipv4 index 10
isis enable 1
  
ip routing

mpls ip

router bgp 65400
router-id 5.5.5.5
neighbor 9.9.9.9 remote-as 65400
neighbor 9.9.9.9 update-source Loopback0
neighbor 9.9.9.9 rib-in pre-policy retain all
neighbor 9.9.9.9 send-community extended

vlan-aware-bundle customer1
rd 5.5.5.5:1
route-target both 65400:1
redistribute learned
vlan 3333

address-family evpn
neighbor default encapsulation mpls next-hop-self source-interface Loopback0
neighbor 9.9.9.9 activate

router isis 1
net 49.0000.5555.5555.5555.00
is-type level-2
segment-routing mpls
no shutdown
address-family ipv4 unicast

service routing protocols model multi-agent

hostname p1
  
interface Ethernet1
no switchport
ip address 1.1.1.2/30
isis enable 1

interface Ethernet2
no switchport
ip address 2.2.2.1/30
isis enable 1

interface Loopback0
ip address 6.6.6.6/32
node-segment ipv4 index 20
isis enable 1
  
ip routing

mpls ip

router isis 1
net 49.0000.6666.6666.6666.00
is-type level-2
segment-routing mpls
no shutdown
address-family ipv4 unicast

service routing protocols model multi-agent

hostname p2
  
interface Ethernet1
no switchport
ip address 2.2.2.2/30
isis enable 1

interface Ethernet2
no switchport
ip address 3.3.3.1/30
isis enable 1

interface Loopback0
ip address 7.7.7.7/32
node-segment ipv4 index 30
isis enable 1
  
ip routing

mpls ip

router isis 1
net 49.0000.7777.7777.7777.00
is-type level-2
segment-routing mpls
no shutdown
address-family ipv4 unicast

service routing protocols model multi-agent

hostname p3
  
interface Ethernet1
no switchport
ip address 3.3.3.2/30
isis enable 1
  
interface Ethernet2
no switchport
ip address 4.4.4.1/30
isis enable 1

interface Loopback0
ip address 8.8.8.8/32
node-segment ipv4 index 40
isis enable 1

ip routing

mpls ip

router isis 1
net 49.0000.8888.8888.8888.00
is-type level-2
segment-routing mpls
no shutdown
address-family ipv4 unicast

PE2

service routing protocols model multi-agent

hostname pe2
  
vlan 3333

interface Ethernet1
switchport trunk allowed vlan 3333
switchport mode trunk

interface Ethernet2
no switchport
ip address 4.4.4.2/30
isis enable 1

interface Loopback0
ip address 9.9.9.9/32
node-segment ipv4 index 50
isis enable 1
  
ip routing

mpls ip

router bgp 65400
router-id 9.9.9.9
neighbor 5.5.5.5 remote-as 65400
neighbor 5.5.5.5 update-source Loopback0
neighbor 5.5.5.5 rib-in pre-policy retain all
neighbor 5.5.5.5 send-community extended

vlan-aware-bundle customer1
rd 9.9.9.9:1
route-target both 65400:1
redistribute learned
vlan 3333

address-family evpn
neighbor default encapsulation mpls next-hop-self source-interface Loopback0
neighbor 5.5.5.5 activate

router isis 1
net 49.0000.9999.9999.9999.00
is-type level-2
segment-routing mpls
no shutdown
address-family ipv4 unicast

OSPF should now be up between the 2 CE devices.

Category: Segment Routing

Juniper vMX – Segment Routing L3VPN

Arista – Segment Routing MPLS EVPN