Arista MPLS VPN Step by Step (1a) MPLS LDP L3VPN Configuration

Above is the topology, in which we have:

• 2 PE + 4 P routers, all full mesh connections (we will leverage this setup for later configurations)
• IGP: OSPF process 71
• iBGP: AS 65001, peering with loopback 71 (71.#.#.#/32, # is the router-id)
• MPLS LDP is enabled on all interfaces

P router configuration:

mpls ip
!
mpls ldp
   router-id 88.255.1.1
   transport-address interface Loopback88
   fec filter prefix-list fec-pfx-list
   no shutdown
!
router bgp 65001
   router-id 88.255.1.1
   maximum-paths 4 ecmp 4
   neighbor pe peer-group
   neighbor pe remote-as 65001
   neighbor pe update-source Loopback88
   neighbor pe route-reflector-client
   neighbor pe send-community standard extended
   neighbor pe maximum-routes 12000 
   !
   ! RR configuration, peering to PE1/PE2
   !
   neighbor 88.255.11.11 peer-group pe
   neighbor 88.255.22.22 peer-group pe
   !
   address-family vpn-ipv4
   ! active vpn-ipv4 AF
      neighbor pe activate
!
router ospf 88
   router-id 88.255.1.1
   passive-interface Loopback88
   network 88.0.0.0/8 area 0.0.0.0
   max-lsa 12000

PE router configuration:

mpls ip
!
mpls ldp
router bgp 65001
   router-id 88.255.11.11
   neighbor vpnv4-rr peer-group
   neighbor vpnv4-rr remote-as 65001
   neighbor vpnv4-rr update-source Loopback88
   neighbor vpnv4-rr send-community standard extended
   neighbor vpnv4-rr maximum-routes 12000 
   neighbor 88.255.1.1 peer-group vpnv4-rr
   neighbor 88.255.2.2 peer-group vpnv4-rr
   !
   address-family vpn-ipv4
      neighbor vpnv4-rr activate
      neighbor default encapsulation mpls next-hop-self source-interface Loopback88

For the full router configuration, please go to the directory.