{"id":646,"date":"2018-10-27T19:39:18","date_gmt":"2018-10-27T19:39:18","guid":{"rendered":"http:\/\/feralpacket.org\/?p=646"},"modified":"2018-10-27T19:39:18","modified_gmt":"2018-10-27T19:39:18","slug":"mpls-layer-3-vpn-l3vpn-notes","status":"publish","type":"post","link":"https:\/\/feralpacket.org\/?p=646","title":{"rendered":"MPLS Layer 3 VPN (L3VPN) Notes"},"content":{"rendered":"

MPLS Layer 3 VPN (L3VPN)<\/span><\/p>\n

<\/p>\n

\nMP-BGP<\/p>\n

\n– Multiprotocol Border Gateway Protocol<\/p>\n

\nPE<\/p>\n

\n– Provider Edge router<\/p>\n

\nP<\/p>\n

\n– Provider router<\/p>\n

\nCE<\/p>\n

\n– Customer Edge router\n<\/p>\n

\nControl Plane<\/p>\n

\n– PE – CE<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> IGP or eBGP<\/p>\n

\n– PE – PE<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> MP-BGP\n<\/p>\n

\nData Plane<\/p>\n

\n– When traffic will be sent, MPLS will be used\n<\/p>\n

\nPE routers create one VRF (Virtual Routing and Forwarding) instance per customer<\/p>\n

\n– VRF has a separate FIB table per customer<\/p>\n

\n– VRF parameters<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Name of VRF table<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Route Distinguisher (RD)<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 64 bit value represented as <32 bit>:<32 bit><\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 50:60<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Used to make customer routes unique\n<\/p>\n

\nRD + IPv4 address = VPNv4 router<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> 64 bit + 32 bits = 96 bits<\/p>\n

<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Route Target (RT)<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 64 bit value represented as <32 bit>:<32 bit><\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> To control the distination of routes, the concept of import and export is used<\/p>\n

<\/p>\n

\nConfiguration on PE routers<\/span><\/p>\n

\nPhase 1<\/span><\/p>\n

\n1. Create the VRF<\/p>\n

\n2. Adding RD value<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Only one RD value per VRF<\/p>\n

\n3. One or more RTs<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Import<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Export<\/p>\n

\n4. Interface association with the VRF<\/p>\n

\n5. PE – CE protocol association\n<\/p>\n

\nR1 (config)# ip vrf c1b1<\/span><\/p>\n

\nrd 100:100<\/span><\/p>\n

\nroute-target import 100:100<\/span><\/p>\n

\nroute-target export 100:100<\/span><\/p>\n

\nint s0\/0<\/span><\/p>\n

\n\u00a0 ip vrf forwarding c1b1<\/span><\/p>\n

\n\u00a0 ip add 14.0.0.1 255.0.0.0<\/span>\n<\/p>\n

\nsh ip route<\/span><\/p>\n

\n\u00a0 C\u00a0\u00a0\u00a0\u00a0 12.0.0.0<\/p>\n

\n\u00a0 C\u00a0\u00a0\u00a0\u00a0 1.0.0.0\n<\/p>\n

\nsh ip route vrf c1b1<\/span><\/p>\n

\n\u00a0 C\u00a0\u00a0\u00a0\u00a0 14.0.0.0\n<\/p>\n

\nR1(config)# router rip<\/span><\/p>\n

\naddress-family ipv4 vrf c1b1<\/span><\/p>\n

\n\u00a0 version 2<\/span><\/p>\n

\n\u00a0 no auto-summary<\/span><\/p>\n

\n\u00a0 network 14.0.0.0<\/span>\n<\/p>\n

\nsh ip route vrf c1b1<\/span><\/p>\n

\n\u00a0 C\u00a0\u00a0\u00a0\u00a0 14.0.0.0<\/p>\n

\n\u00a0 R\u00a0\u00a0\u00a0\u00a0 4.4.4.4\n<\/p>\n

\nConfigure RIP on the CE routers\n<\/p>\n

\nAfter Phase 1, the PE routers will have the local client routes<\/p>\n

<\/p>\n

\nPhase 2<\/span><\/p>\n

\n1. Configure MP-BGP on PE routers<\/p>\n

\n2. Form VPNv4 neighbor relationship between PE routers using \/32 loopback interfaces<\/p>\n

\n3. Do mutual redistribution between the PE – CE IGP and the MP-BGP VRF-to-VRF\n<\/p>\n

\nRD + IPv4 Address = VPNv4 route\n<\/p>\n

\n100:100:4.4.4.4\n<\/p>\n

\nR1(config)# router bgp 100<\/span><\/p>\n

\nneighbor 3.3.3.3 remote-as 100<\/span><\/p>\n

\nneighbor 3.3.3.3 update-source lo0<\/span><\/p>\n

\naddress-family vpnv4 unicast<\/span><\/p>\n

\n\u00a0 neighbor 3.3.3.3 activate<\/span><\/p>\n

\n\u00a0 neighbor 3.3.3.3 send-community extended<\/span><\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> This is automatically added to the configuration when the neighbor is activated<\/p>\n

\n\u00a0 address-family ipv4 vrf c1b1<\/span><\/p>\n


\n\u00a0\u00a0 redistribute rip<\/span>\n<\/p>\n

\nExtended community is used to send and receive IGP parameters from one customer site to another customer site\n<\/p>\n

\nR1(config)# router rip<\/span><\/p>\n

\naddress-family ipv4 vrf c1b1<\/span><\/p>\n

\n\u00a0 redistribute bgp 100 metric { transparent | <value> }<\/span>\n<\/p>\n

\nTransparent<\/p>\n

\n\u00a0 RIP -> BGP’s MED -> BGP’s MED -> RIP metric<\/p>\n

<\/p>\n

\nBGP adds a VPN label when routes are redistributed into BGP\n<\/p>\n

\nBGP VPN Label = 100 for 4.4.4.4<\/p>\n

<\/p>\n

\nsh mpls forwarding-table<\/span><\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> To check the LFIB\n<\/p>\n

\nBGP<\/p>\n

\n– IPv4<\/p>\n

\n– IPv6\n<\/p>\n

\nXR Routers<\/span>\n<\/p>\n

\nrouter bgp <asn><\/span><\/p>\n


\n\u00a0address-family <afi> <safi><\/span><\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Address-family Identifier<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> ipv4<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 32 bit<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> ipv6<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 128 bit<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> vpnv4<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> RD + ipv4<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 64 bits + 32 bits = 96 bits<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Client IPv4 addresses<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> vpnv6<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> RD + ipv6<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> 64 bits + 128 bits = 192 bits<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Client IPv6 addresses<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Subsequent Address-family Identifier<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> unicast<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> multicast<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> mdt<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -> Multicast Distribution Tree\n<\/p>\n

\nrouter bgp <asn><\/span><\/p>\n


\naddress-family <afi> <safi><\/span><\/p>\n


\n\u00a0 network <ip add>\/<nm><\/span><\/p>\n


\n\u00a0 redistribute <protocol><\/span><\/p>\n


\n\u00a0 exit<\/span><\/p>\n


\nneighbor <ip add><\/span><\/p>\n


\n\u00a0 remote-as <asn><\/span><\/p>\n


\n\u00a0 update-source <int><\/span><\/p>\n


\n\u00a0 ebgp-multihop <ttl><\/span><\/p>\n


\naddress-family <afi> <safi><\/span><\/p>\n


\n\u00a0 route-reflector-client<\/span><\/p>\n


\n\u00a0 next-hop-self<\/span><\/p>\n


\n\u00a0 route-policy <name> in | out<\/span><\/p>\n


\n\u00a0 as-override<\/span><\/p>\n


\n\u00a0 default-originate<\/span>\n<\/p>\n

<\/p>\n

Configure BGP between R1 and R2 for IPv4 and IPv6<\/p>\n

\u00a0– Advertise loopbacks<\/p>\n

\u00a0– Disable the default address-familty<\/p>\n

\u00a0 \u00a0 \u00a0-> This is commonly seen in the lab<\/p>\n

R1(config)# router bgp 100<\/span><\/p>\n

\u00a0no bgp default ipv4-unicast<\/span><\/p>\n

\u00a0neighbor 12.0.0.2 remote-as 100<\/span><\/p>\n

\u00a0neighbor 2002:12::2 remote-as 100<\/span><\/p>\n

\u00a0address-family ipv4 unicast<\/span><\/p>\n

\u00a0 neighbor 12.0.0.2 activate<\/span><\/p>\n

\u00a0 network 12.0.0.0 mask 255.0.0.0<\/span><\/p>\n

\u00a0 network 1.1.1.1 mask 255.255.255.255<\/span><\/p>\n

\u00a0address-family ipv6 unicast<\/span><\/p>\n

\u00a0 neighbor 2002:12::2 activate<\/span><\/p>\n

\u00a0 network 2002:12::\/64<\/span><\/p>\n

\u00a0 network 2002:1:1:1::1\/128<\/span><\/p>\n

R2(config)# router bgp 100<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 -> On the XR router, the is no default address-family<\/p>\n

\u00a0address-family ipv4 unicast<\/span><\/p>\n

\u00a0 network 2.2.2.2\/32<\/span><\/p>\n

\u00a0 network 12.0.0.0\/8<\/span><\/p>\n

\u00a0address-family ipv6 unicast<\/span><\/p>\n

\u00a0 network 2002:12::\/8<\/span><\/p>\n

\u00a0 network 2002:2:2:2::2\/128<\/span><\/p>\n

\u00a0neighbor 12.0.0.1<\/span><\/p>\n

\u00a0 remote-as 100<\/span><\/p>\n

\u00a0 address-family ipv4 unicast<\/span><\/p>\n

\u00a0neighbor 2002:12::1<\/span><\/p>\n

\u00a0 remote-as 100<\/span><\/p>\n

\u00a0 address-family ipv6 unicast<\/span><\/p>\n

sh bgp <afi> <safi><\/span><\/p>\n

sh bgp ipv4 unicast<\/span><\/p>\n

sh bgp ipv6 unicast<\/span><\/p>\n

eBGP<\/p>\n

\u00a0– By default, no IPv4 or IPv6 updates can be exchanged<\/p>\n

\u00a0 \u00a0 \u00a0-> A route-policy has to be applied to the incoming and outgoing directions inside the address-family<\/p>\n

\u00a0– Create the route-policy in global config<\/p>\n

route-policy PASS<\/span><\/p>\n

\u00a0pass<\/span><\/p>\n

\u00a0exit<\/span><\/p>\n

\u00a0– Apply the route-policy to the address-family<\/p>\n

router bgp 100<\/span><\/p>\n

\u00a0neighbor <ip add><\/span><\/p>\n

\u00a0 address-family <afi> <safi><\/span><\/p>\n

\u00a0 \u00a0route-policy PASS in<\/span><\/p>\n

\u00a0 \u00a0route-policy PASS out<\/span><\/p>\n

<\/p>\n

<\/p>\n

L3VPN<\/p>\n

\u00a01. VRF creation<\/p>\n

\u00a02. PE – CE interface association<\/p>\n

\u00a03. IGP association ( PE – CE )<\/p>\n

\u00a04. MP-BGP ( PE – PE )<\/p>\n

\u00a05. Mutual\u00a0redistribution\u00a0between VRF IGP and MP-BGP<\/p>\n

\u00a0– ISP Core<\/p>\n

\u00a0 \u00a0 \u00a0-> IGP + LDP<\/p>\n

XR Routers<\/p>\n

R1(config)# vrf ABC<\/span><\/p>\n

\u00a0address-family ipv4 unicast<\/span><\/p>\n

\u00a0 import route-target 1:1<\/span><\/p>\n

\u00a0 export route-target 1:1<\/span><\/p>\n

RD value is configured inside BGP on XR routers<\/p>\n

\u00a0– This is easy to forget<\/span><\/p>\n

VRF interface association<\/p>\n

\u00a0– On XR routers, the IPv4 and IPv6 addresses must be removed before associating the interface to the VRF<\/p>\n

R1(config)# int g0\/0\/0\/0<\/span><\/p>\n

\u00a0no ipv4 add<\/span><\/p>\n

\u00a0no ipv6 add<\/span><\/p>\n

\u00a0vrf ABC<\/span><\/p>\n

\u00a0ipv4 <ip add>\/<nm><\/span><\/p>\n

\u00a0ipv6 <ip add>\/<nm><\/span><\/p>\n

router rip<\/span><\/p>\n

\u00a0vrf ABC<\/span><\/p>\n

\u00a0 int g0\/0\/0\/0<\/span><\/p>\n

router eigrp 100<\/span><\/p>\n

\u00a0vrf ABC<\/span><\/p>\n

\u00a0 address-family ipv4 unicast<\/span><\/p>\n

\u00a0 \u00a0autonomous-system 100<\/span><\/p>\n

\u00a0 \u00a0int g0\/0\/0\/0<\/span><\/p>\n

\u00a0 address-family ipv6 unicast<\/span><\/p>\n

\u00a0 \u00a0autonomous-system 100<\/span><\/p>\n

\u00a0 \u00a0int g0\/0\/0\/0<\/span><\/p>\n

router ospf 1<\/span><\/p>\n

\u00a0vrf ABC<\/span><\/p>\n

\u00a0 area 0<\/span><\/p>\n

\u00a0 \u00a0int g0\/0\/0\/0<\/span><\/p>\n

root<\/span><\/p>\n

show config<\/span><\/p>\n

commit<\/span><\/p>\n

MP-BGP<\/p>\n

\u00a0– VPNv4 address-family<\/p>\n

\u00a0 \u00a0 \u00a0-> PE – PE<\/p>\n

\u00a0– Mutual redistribution with VRF IGP<\/p>\n

R1(config)# router bgp 100<\/span><\/p>\n

\u00a0address-family ipv4 unicast<\/span><\/p>\n

\u00a0address-family vpn4 unicast<\/span><\/p>\n

\u00a0neighbor 2.2.2.2<\/span><\/p>\n

\u00a0 remote-as 100<\/span><\/p>\n

\u00a0 update-source lo0<\/span><\/p>\n

\u00a0 address-family vpn4 unicast<\/span><\/p>\n

\u00a0vrf ABC<\/span><\/p>\n

\u00a0 rd 1:1<\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> This is easy to forget<\/span><\/p>\n

\u00a0 address-family ipv4 unicast<\/span><\/p>\n

\u00a0 \u00a0redistribute ospf 1<\/span><\/p>\n

router ospf 1<\/span><\/p>\n

\u00a0vrf ABC<\/span><\/p>\n

\u00a0 redistribute bgp 100<\/span><\/p>\n

\u00a0 area 0<\/span><\/p>\n

\u00a0 int g0\/0\/0\/0<\/span><\/p>\n

During the SP lab, there will be 6 PE routers and 6 CE routers<\/p>\n

If PE – CE protocol is BGP<\/p>\n

R1(config)# router bgp 100<\/span><\/p>\n

\u00a0address-family ipv4 unicast<\/span><\/p>\n

\u00a0address-family vpnv4 unicast<\/span><\/p>\n

\u00a0neighbor 2.2.2.2<\/span><\/p>\n

\u00a0 remote-as 100<\/span><\/p>\n

\u00a0 update-source lo0<\/span><\/p>\n

\u00a0 address-family vpnv4 unicast<\/span><\/p>\n

\u00a0vrf ABC<\/span><\/p>\n

\u00a0 rd 1:1<\/span><\/p>\n

\u00a0 address-family ipv4 unicast<\/span><\/p>\n

\u00a0 \u00a0redistribute connected<\/span><\/p>\n

\u00a0 neighbor 13.0.0.3<\/span><\/p>\n

\u00a0 \u00a0remote-as 50<\/span><\/p>\n

\u00a0 \u00a0address-family ipv4 unicast<\/span><\/p>\n

\u00a0 \u00a0 route-policy PASS in<\/span><\/p>\n

\u00a0 \u00a0 route-policy PASS out<\/span><\/p>\n

\u00a0 \u00a0 as-override<\/span><\/p>\n

<\/p>\n

! R1<\/span><\/p>\n

router eigrp 1<\/span><\/p>\n


\n\u00a0address-family ipv4<\/span><\/p>\n


\n\u00a0 int lo0<\/span><\/p>\n


\n\u00a0 int gi0\/0\/0\/1<\/span><\/p>\n

! R2<\/span><\/p>\n

router ospf 1<\/span><\/p>\n

\u00a0router-id\u00a02.2.2.2<\/span><\/p>\n

\u00a0area 0<\/span><\/p>\n

\u00a0 int lo0<\/span><\/p>\n

\u00a0 int gi0\/0\/0\/1<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>mpls ldp<\/span><\/p>\n


\nrouter ospf 1<\/span><\/p>\n


\n\u00a0mpls ldp auto-config<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>router bgp 100<\/span><\/p>\n


\n\u00a0bgp router-id 2.2.2.2<\/span><\/p>\n


\n\u00a0address-family vpnv4 unicast<\/span><\/p>\n


\n\u00a0neighbor 5.5.5.5<\/span><\/p>\n


\n\u00a0 remote-as 100<\/span><\/p>\n


\n\u00a0 update-source lo0<\/span><\/p>\n


\n\u00a0 address-family vpnv4 unicast<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>vrf ABC<\/span><\/p>\n


\n\u00a0address-family ipv4 unicast<\/span><\/p>\n


\n\u00a0 import route-target 1:1<\/span><\/p>\n


\n\u00a0 export route-target 1:1<\/span><\/p>\n


\nrouter bgp 100<\/span><\/p>\n


\n\u00a0vrf ABC<\/span><\/p>\n


\n\u00a0 rd 1:1<\/span><\/p>\n


\n\u00a0 address-family ipv4 unicast<\/span><\/p>\n

!<\/span><\/p>\n

int g0\/0\/0\/0<\/span><\/p>\n

\u00a0no ipv4 address 12.0.0.2 255.255.255.0<\/span><\/p>\n

\u00a0vrf ABC<\/span><\/p>\n

\u00a0ipv4 address 12.0.0.2 255.255.255.0<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>router eigrp 1<\/span><\/p>\n


\n\u00a0vrf ABC<\/span><\/p>\n


\n\u00a0 address-family ipv4<\/span><\/p>\n

\u00a0\u00a0 autonomous-system 1<\/span><\/p>\n

\u00a0\u00a0 int gi0\/0\/0\/0<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>router bgp 100<\/span><\/p>\n


\n\u00a0vrf ABC<\/span><\/p>\n


\n\u00a0address-family ipv4 unicast<\/span><\/p>\n


\n\u00a0 redistribute eigrp 1<\/span><\/p>\n


\nrouter eigrp 1<\/span><\/p>\n


\n\u00a0vrf ABC<\/span><\/p>\n


\n\u00a0address-family ipv4<\/span><\/p>\n

\u00a0 redistribute bgp 100<\/span><\/p>\n

! R3<\/span><\/p>\n

int lo0<\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/p>\n


\nint e1\/0<\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/p>\n


\nint e1\/1<\/span><\/p>\n


\n\u00a0ip ospf 1 area 0<\/span><\/p>\n


\nrouter ospf 1<\/span><\/p>\n


\n\u00a0router-id 3.3.3.3<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>mpls label protocol ldp<\/span><\/p>\n


\nmpls ldp router-id lo0 force<\/span><\/p>\n


\nint e1\/0<\/span><\/p>\n


\n\u00a0mpls ip<\/span><\/p>\n


\nint e1\/1<\/span><\/p>\n

\u00a0mpls ip<\/span><\/p>\n

\u00a0<\/span><\/p>\n


\n<\/span><\/p>\n

! R4<\/span><\/p>\n

router ospf 1<\/span><\/p>\n


\n\u00a0router-id 4.4.4.4<\/span><\/p>\n


\n\u00a0area 0<\/span><\/p>\n

\u00a0 int lo0<\/span><\/p>\n

\u00a0 int gi0\/0\/0\/0<\/span><\/p>\n

\u00a0 int gi0\/0\/0\/1<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>mpls ldp<\/span><\/p>\n


\nrouter ospf 1<\/span><\/p>\n

\u00a0mpls ldp auto-config<\/span><\/p>\n

! R5<\/span><\/p>\n

router ospf 1<\/span><\/p>\n


\n\u00a0router-id 5.5.5.5<\/span><\/p>\n


\n\u00a0area 0<\/span><\/p>\n

\u00a0 int lo0<\/span><\/p>\n

\u00a0 int gi0\/0\/0\/1<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>mpls ldp<\/span><\/p>\n


\nrouter ospf 1<\/span><\/p>\n


\n\u00a0mpls ldp auto-config<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>router bgp 100<\/span><\/p>\n


\n\u00a0bgp router-id 5.5.5.5<\/span><\/p>\n

\u00a0address-family vpnv4 unicast<\/span><\/p>\n

\u00a0neighbor 2.2.2.2<\/span><\/p>\n

\u00a0 remote-as 100<\/span><\/p>\n


\n\u00a0 update-source lo0<\/span><\/p>\n


\n\u00a0 address-family vpnv4 unicast<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>vrf ABC<\/span><\/p>\n


\n\u00a0address-family ipv4 unicast<\/span><\/p>\n


\n\u00a0 import route-target 1:1<\/span><\/p>\n


\n\u00a0 export route-target 1:1<\/span><\/p>\n


\nrouter bgp 100<\/span><\/p>\n


\n\u00a0vrf ABC<\/span><\/p>\n


\n\u00a0 rd 1:1<\/span><\/p>\n


\n\u00a0 address-family ipv4 unicast<\/span><\/p>\n

!<\/span><\/p>\n

int gi0\/0\/0\/0<\/span><\/p>\n

\u00a0no ipv4 address 35.0.0.3 255.255.255.0<\/span><\/p>\n

\u00a0vrf ABC<\/span><\/p>\n

\u00a0ipv4 address 35.0.0.3 255.255.255.0<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>router eigrp 1<\/span><\/p>\n


\n\u00a0vrf ABC<\/span><\/p>\n


\n\u00a0 address-family ipv4<\/span><\/p>\n

\u00a0\u00a0 autonomous-system 1<\/span><\/p>\n

\u00a0\u00a0 int gi0\/0\/0\/0<\/span><\/p>\n

!<\/span><\/p>\n


\n<\/span>router bgp 100<\/span><\/p>\n


\n\u00a0vrf ABC<\/span><\/p>\n


\n\u00a0address-family ipv4 unicast<\/span><\/p>\n


\n\u00a0 redistribute eigrp 1<\/span><\/p>\n


\nrouter eigrp 1<\/span><\/p>\n


\n\u00a0vrf ABC<\/span><\/p>\n


\n\u00a0address-family ipv4<\/span><\/p>\n


\n\u00a0 redistribute bgp 100<\/span><\/p>\n

! R6\u00a0<\/span><\/p>\n

router eigrp 1<\/span><\/p>\n

\u00a0network 6.6.6.6 0.0.0.0<\/span><\/p>\n

\u00a0network\u00a056.0.0.6 0.0.0.0<\/span><\/p>\n

Verification<\/span><\/p>\n

! R1<\/span><\/p>\n

sh eigrp int<\/span><\/p>\n

sh eigrp nei<\/span><\/p>\n

sh ip route<\/span><\/p>\n

ping 6.6.6.6<\/span><\/p>\n

! R2 and R5<\/span><\/p>\n

sh ospf nei<\/span><\/p>\n

sh route ospf<\/span><\/p>\n

sh mpls int<\/span><\/p>\n

sh mpls ldp nei bri<\/span><\/p>\n

sh bgp vpnv4 u sum<\/span><\/p>\n

sh bgp vpnv4 u<\/span><\/p>\n

sh vrf ABC<\/span><\/p>\n

sh eigrp vrf ABC nei<\/span><\/p>\n

sh route vrf ABC eigrp<\/span><\/p>\n

ping vrf ABC 1.1.1.1<\/span><\/p>\n

ping vrf ABC 6.6.6.6<\/span><\/p>\n

sh bgp vrf ABC<\/span><\/p>\n

sh route vrf ABC bgp<\/span><\/p>\n

sh eigrp vrf ABC topology<\/span><\/p>\n

! R6<\/span><\/p>\n

sh ip eigrp int<\/span><\/p>\n

sh ip eigrp nei<\/span><\/p>\n

sh ip route<\/span><\/p>\n

ping 1.1.1.1<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

MPLS Layer 3 VPN (L3VPN)<\/p>\n","protected":false},"author":1,"featured_media":636,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[33,32,31],"class_list":["post-646","post","type-post","status-publish","format-standard","hentry","category-ccie","tag-l3vpn","tag-mpls","tag-published"],"_links":{"self":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/646","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=646"}],"version-history":[{"count":1,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/646\/revisions"}],"predecessor-version":[{"id":709,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/646\/revisions\/709"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/media\/636"}],"wp:attachment":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}