{"id":522,"date":"2018-10-26T22:04:08","date_gmt":"2018-10-26T22:04:08","guid":{"rendered":"http:\/\/feralpacket.org\/?p=522"},"modified":"2018-10-26T22:04:08","modified_gmt":"2018-10-26T22:04:08","slug":"inter-as-vpn-option-10-c-notes","status":"publish","type":"post","link":"https:\/\/feralpacket.org\/?p=522","title":{"rendered":"Inter-AS VPN Option (10) C Notes"},"content":{"rendered":"

Inter-AS VPN Option (10) C<\/span><\/p>\n

\n– Multihop MP-BGP<\/p>\n

\n– VPNv4 neighbor relationship between PE routers or router reflectors<\/p>\n

\n\u00a0\u00a0\u00a0\u00a0 -> Must be able to ping each others loopback interfaces\n<\/p>\n

<\/p>\n

PE Routers | Route Reflectors should be able to ping loopback to loopback (IPv4)<\/p>\n

\u00a0– Control Plane<\/p>\n

\u00a0 \u00a0 \u00a0-> PE – ASBR<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> iBGP IPv4<\/p>\n

\u00a0 \u00a0 \u00a0-> ASBR – ASBR<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> eBGP IPv4<\/p>\n

\u00a0 \u00a0 \u00a0-> Advertise loopback into BGP<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> On PE router<\/p>\n

\u00a0– Data Plane<\/p>\n

\u00a0 \u00a0 \u00a0-> On XR routers, static routes are needed on the ASBR routers for the transport labels<\/p>\n

\u00a0– VPNv4 neighbor relationship between R1 and R7 will use loopbacks<\/p>\n

\u00a0 \u00a0 \u00a0-> 1.1.1.1<\/p>\n

\u00a0 \u00a0 \u00a0-> 7.7.7.7<\/p>\n

\u00a0 \u00a0 \u00a0-> Labels must be associated with the next-hop address<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> 1.1.1.1, 7.7.7.7<\/p>\n

\u00a0– PE – PE communications<\/p>\n

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

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> iBPG \/ eBGP + IPv4<\/p>\n

\u00a0– CE – CE communications<\/p>\n

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

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> eBGP VPNv4\u00a0<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> PE routers<\/p>\n

<\/p>\n

<\/p>\n

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

\u00a01. IPv4 – iBGP + label between PE – ASBR<\/p>\n

\u00a02. IPv4 – eBGP + label between ASBRs<\/p>\n

\u00a0 \u00a0 \u00a0-> Configure next-hop-self on both ASBRs towards the PE routers<\/p>\n

\u00a03. Static route for each other on ASBRs<\/p>\n

\u00a0 \u00a0 \u00a0-> XR routes only<\/p>\n

\u00a04. MP-eBGP VPNv4 neighbors between PE routers | Router Reflectors loopback to loopback<\/p>\n

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

\u00a05. PE – CE VRF and IGP configuration<\/p>\n

\u00a06. Mutual redistribution between VRF IGP and VRF BGP<\/p>\n

<\/p>\n

<\/p>\n

Option C with Router Reflectors<\/span><\/p>\n

\u00a01. MP-eBGP VPNv4 is configured between Router Reflectors<\/p>\n

\u00a02. MP-iBGP VPNv4 between Router Reflector and PE routers<\/p>\n

\u00a03. IPv4 – eBGP + label between ASBRs<\/p>\n

\u00a04. IPv4 – iBGP between ASBR – RR – PE routers<\/p>\n

\u00a05. Loopback addresses of PE routers and Route Reflectors are exchanged<\/p>\n

\u00a06. PE – CE stuff<\/p>\n

<\/p>\n

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

router bgp 50<\/span><\/span><\/p>\n

\u00a0bgp router-id 1.1.1.1<\/span><\/span><\/span><\/p>\n

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

\u00a0neighbor 12.0.0.1 remote-as 100<\/span><\/span><\/span><\/p>\n

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

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

\u00a0 neighbor 12.0.0.1 activate<\/span><\/span><\/p>\n

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

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


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


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


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


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


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

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

\u00a0router-id 2.2.2.2<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp autoconfig<\/span><\/span><\/p>\n

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

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


\n\u00a0rd 1:1<\/span><\/span><\/p>\n


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


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


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

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

\u00a0ip address 12.0.0.2 255.255.255.0<\/span><\/span><\/span><\/p>\n

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

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

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

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


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

\u00a0 neighbor 12.0.0.1 remote-as 50<\/span><\/span><\/span><\/p>\n

\u00a0 neighbor 12.0.0.1 activate<\/span><\/span><\/span><\/p>\n

\u00a0 neighbor 12.0.0.1 as-override<\/span><\/span><\/span><\/p>\n

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

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

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

\u00a0neighbor 4.4.4.4 remote-as 100<\/span><\/span><\/span><\/p>\n

\u00a0neighbor 4.4.4.4 update-source lo0<\/span><\/span><\/span><\/p>\n

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

\u00a0 network 2.2.2.2 mask 255.255.255.255<\/span><\/span><\/span><\/p>\n

\u00a0 neighbor 4.4.4.4 activate<\/span><\/span><\/span><\/p>\n

\u00a0 neighbor 4.4.4.4 send-label<\/span><\/span><\/p>\n

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

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

\u00a0neighbor 7.7.7.7 remote-as 200<\/span><\/span><\/span><\/p>\n

\u00a0neighbor 7.7.7.7 update-source lo0<\/span><\/span><\/span><\/p>\n

\u00a0neighbor 7.7.7.7 ebgp-multihop 255<\/span><\/span><\/span><\/p>\n

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

\u00a0 neighbor 7.7.7.7 activate<\/span><\/span><\/span><\/p>\n

\u00a0 neighbor 7.7.7.7 send-community extended<\/span><\/span><\/span><\/p>\n

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

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


\n\u00a0 route-target import 2:2<\/span><\/span><\/p>\n

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

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


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


\n\u00a0router-id 9.9.0.3<\/span><\/span><\/p>\n


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


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

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

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

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

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

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

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

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

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


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

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

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

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

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

\u00a0bgp router-id 4.4.4.4<\/span><\/span><\/span><\/p>\n

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

\u00a0 allocate-label all<\/span><\/span><\/span><\/p>\n

\u00a0neighbor 45.0.0.5<\/span><\/span><\/span><\/p>\n

\u00a0 remote-as 200<\/span><\/span><\/p>\n


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


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


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


\nroute-policy allow-all<\/span><\/span><\/p>\n


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


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


\nrouter static<\/span><\/span><\/p>\n

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

\u00a0 45.0.0.5\/32 gi0\/0\/0\/1<\/span><\/span><\/p>\n

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

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

\u00a0neighbor\u00a02.2.2.2<\/span><\/span><\/span><\/p>\n

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


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


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


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

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

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

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

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

\u00a0router-id\u00a05.5.5.5<\/span><\/span><\/span><\/p>\n

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


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

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

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

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

router bgp 200<\/span><\/span><\/p>\n

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

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

\u00a0 allocate-label all<\/span><\/span><\/span><\/p>\n

\u00a0neighbor 45.0.0.4<\/span><\/span><\/span><\/p>\n

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


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


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


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


\nroute-policy allow-all<\/span><\/span><\/p>\n


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


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


\nrouter static<\/span><\/span><\/p>\n


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


\n\u00a0 45.0.0.4\/32 gi0\/0\/0\/1<\/span><\/span><\/p>\n

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

router bgp 200<\/span><\/span><\/p>\n

\u00a0neighbor 7.7.7.7<\/span><\/span><\/p>\n


\n\u00a0 remote-as 200<\/span><\/span><\/p>\n


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


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


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

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

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

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


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


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


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


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

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

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

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

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

\u00a0router-id 6.6.6.6<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp autoconfig<\/span><\/span><\/p>\n

! R7<\/span><\/span><\/p>\n

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


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


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

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

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

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

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

\u00a0router-id 7.7.7.7<\/span><\/span><\/span><\/p>\n

\u00a0mpls ldp autoconfig<\/span><\/span><\/p>\n

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

vrf definition DEF<\/span><\/span><\/p>\n


\n\u00a0rd 2:2<\/span><\/span><\/p>\n


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


\n\u00a0 route-target both 2:2<\/span><\/span><\/p>\n


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


\n\u00a0vrf forwarding DEF<\/span><\/span><\/p>\n


\n\u00a0ip address 78.0.0.7 255.255.255.0<\/span><\/span><\/p>\n

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

router bgp 200<\/span><\/span><\/p>\n

\u00a0bgp router-id 7.7.7.7<\/span><\/span><\/span><\/p>\n

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


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

\u00a0 neighbor 78.0.0.8 remote-as 50<\/span><\/span><\/span><\/p>\n

\u00a0 neighbor 78.0.0.8 activate<\/span><\/span><\/span><\/p>\n

\u00a0 neighbor 78.0.0.8 as-override<\/span><\/span><\/span><\/p>\n

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

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

router bgp 200<\/span><\/span><\/p>\n

\u00a0neighbor 5.5.5.5 remote-as 200<\/span><\/span><\/span><\/p>\n

\u00a0neighbor 5.5.5.5 update-source lo0<\/span><\/span><\/span><\/p>\n

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

\u00a0 network 7.7.7.7 mask 255.255.255.255<\/span><\/span><\/span><\/p>\n

\u00a0 neighbor 5.5.5.5 activate<\/span><\/span><\/span><\/p>\n

\u00a0 neighbor 5.5.5.5 send-label<\/span><\/span><\/p>\n

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

router bgp 200<\/span><\/span><\/p>\n

\u00a0neighbor 2.2.2.2 remote-as 100<\/span><\/span><\/span><\/p>\n

\u00a0neighbor 2.2.2.2 update-source lo0<\/span><\/span><\/span><\/p>\n

\u00a0neighbor 2.2.2.2 ebgp-multihop 255<\/span><\/span><\/span><\/p>\n

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

\u00a0 neighbor 2.2.2.2 activate<\/span><\/span><\/span><\/p>\n

\u00a0 neighbor 2.2.2.2 send-community extended<\/span><\/span><\/span><\/p>\n

vrf definition DEF<\/span><\/span><\/span><\/p>\n

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


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

! R8<\/span><\/span><\/p>\n

router bgp 50<\/span><\/span><\/p>\n


\n\u00a0bgp router-id 8.8.8.8<\/span><\/span><\/p>\n

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

\u00a0 network 8.8.8.8\/32<\/span><\/span><\/span><\/p>\n

\u00a0neighbor 78.0.0.7<\/span><\/span><\/span><\/p>\n

\u00a0 remote-as 200<\/span><\/span><\/p>\n


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


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


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


\nroute-policy allow-all<\/span><\/span><\/p>\n


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


\n\u00a0end<\/span><\/span><\/p>\n

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

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

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

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

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

ping 8.8.8.8 source lo0<\/span><\/span><\/span><\/p>\n

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

sh ip ospf int bri<\/span><\/span><\/span><\/p>\n

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

sh ospf int bri<\/span><\/span><\/span><\/p>\n

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

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

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

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

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

\u00a0! R4<\/span><\/span><\/p>\n

sh ospf int bri<\/span><\/span><\/span><\/p>\n

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

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

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

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

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

sh bgp ipv4 labeled-unicast sum<\/span><\/span><\/span><\/p>\n

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

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

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

sh ospf int bri<\/span><\/span><\/span><\/p>\n

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

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

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

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

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

sh bgp ipv4 labeled-unicast sum<\/span><\/span><\/span><\/p>\n

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

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

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

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

sh ip ospf int bri<\/span><\/p>\n

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

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

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

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

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

! R7<\/span><\/p>\n

sh ip ospf int bri<\/span><\/span><\/span><\/p>\n

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

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

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

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

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

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

sh bgp vrf DEF all sum<\/span><\/span><\/span><\/p>\n

sh bgp vrf DEF all<\/span><\/span><\/span><\/p>\n

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

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

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

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

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

! R8<\/span><\/span><\/p>\n

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

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

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

ping 1.1.1.1 source 8.8.8.8<\/span><\/span><\/span><\/p>\n


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

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


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


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


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

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