{"id":503,"date":"2018-10-26T22:00:24","date_gmt":"2018-10-26T22:00:24","guid":{"rendered":"http:\/\/feralpacket.org\/?p=503"},"modified":"2018-10-26T22:00:24","modified_gmt":"2018-10-26T22:00:24","slug":"ipv6-mpls-l3vpn-6penotes","status":"publish","type":"post","link":"https:\/\/feralpacket.org\/?p=503","title":{"rendered":"IPv6 MPLS L3VPN (6PE)Notes"},"content":{"rendered":"

IPv6 MPLS L3VPN (6PE)<\/span><\/p>\n

\u00a0– 6PE<\/p>\n

\u00a0– 6vPE<\/p>\n

\u00a0 \u00a0 \u00a0-> Small “v” means VRF<\/p>\n

\u00a0– Client side<\/p>\n

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

\u00a0– PE routers<\/p>\n

\u00a0 \u00a0 \u00a0-> IPv6 over IPv4 (6to4)<\/p>\n

\u00a0 \u00a0 \u00a0-> Dual stack<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> IPv4 towards core of SP<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ->IPv6 towards the client<\/p>\n

\u00a0– P (provider) routers<\/p>\n

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

LDP only works with IPv4<\/p>\n

6PE<\/span><\/p>\n

\u00a0– Without VRFs on PE routers<\/p>\n

\u00a0– IPv6 address-family between PE – PE \u00a0and PE – CE routers<\/p>\n

\u00a0– Not as easy to configure as it should seem<\/p>\n

6vPE<\/span><\/p>\n

\u00a0– with VRFs on PE routers<\/p>\n

\u00a0– VPNv6 address-family between PE – PE routers<\/p>\n

\u00a0– IPv6 address-family between PE – CE routers<\/p>\n

<\/p>\n

<\/p>\n

Transport label<\/p>\n

\u00a0– LDP<\/p>\n

\u00a0 \u00a0 \u00a0-> for BGP next-hop<\/p>\n

VPN label<\/p>\n

\u00a0– BGP VPNv4<\/p>\n

\u00a0 \u00a0 \u00a0-> for client networks<\/p>\n

<\/p>\n

IPv6 Table<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0next-hop<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0::ffff:<ipv4 address of the PE router><\/p>\n

6PE Rules<\/span><\/p>\n

\u00a01. Client has an IPv6 neighbor relationship with PE router<\/p>\n

\u00a02. PE routers will perform mutual redistribution between “IPv6 IGP \/ eBGP” and “MP-BGP IPv6”<\/p>\n

\u00a03. PE – PE will be IPv6 + label<\/p>\n

6PE on IOS Routers<\/span><\/p>\n

R4(config)# ipv6 eigrp 1<\/span><\/p>\n

\u00a0no shut<\/span><\/p>\n

\u00a0eigrp router-id 4.4.4.4<\/span><\/p>\n

int fa0\/0<\/span><\/p>\n

\u00a0ipv6 eigrp 1<\/span><\/p>\n

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

\u00a0ipv6 eigrp 1<\/span><\/p>\n

R1(config)# ipv6 router eigrp 1<\/span><\/p>\n

\u00a0no shut<\/span><\/p>\n

\u00a0eigrp router-id 1.1.1.1<\/span><\/p>\n

int fa0\/0<\/span><\/p>\n

\u00a0ipv6 eigrp 1<\/span><\/p>\n

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

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

\u00a0neghbor 3.3.3.3 remote-as 100<\/span><\/p>\n

\u00a0neighbor 3.3.3.3 update-source lo0<\/span><\/p>\n

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

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

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

\u00a0 \u00a0 \u00a0-> Have to force the router to send labels in IPv6<\/p>\n

\u00a0 \u00a0 \u00a0-> Sending labels is the default in IPv4<\/p>\n

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

ipv6 router eigrp 1<\/span><\/p>\n

\u00a0redistribute bgp 100 metric 1 1 1 1 1<\/span><\/p>\n

Problem with 6PE<\/p>\n

\u00a0– There is no isolation that can be provided by VRFs<\/p>\n

\u00a0– PE routers have to be dedicated for each customer<\/p>\n

\u00a0 \u00a0 \u00a0-> Otherwise, the customers will see the IPv6 routes of any other customer connected to the PE router<\/p>\n

R3<\/p>\n

\u00a0– LDP<\/p>\n

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

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> 16 (transport label)<\/p>\n

\u00a0– BGP<\/p>\n

\u00a0 \u00a0 \u00a0-> Label for 2002:14::4<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -> 20 (VPN label)<\/p>\n

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

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0next-hop<\/p>\n

2002:14::4 \u00a0 \u00a0 \u00a0 \u00a0 ::ffff:1.1.1.1<\/p>\n

sh bgp ipv6 u label<\/span><\/p>\n

\u00a0– If labels are not present, then “neighbor x.x.x.x send-label” configuration is missing<\/p>\n

\u00a0 \u00a0 \u00a0| 16 | 20 | IPv6 |<\/p>\n

To check PE – PE IPv6 communicastion, the following command is required<\/p>\n

R1(config)# mpls ipv6 source-interface <int><\/span><\/p>\n

<\/p>\n

eBGP is required for PE – CE on XR routers<\/span><\/p>\n

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

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

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

\u00a0neighbor 3.3.3.3<\/span><\/p>\n

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

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

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

\u00a0neighbor 2002:14::4<\/span><\/p>\n

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

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

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

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

\u00a0 \u00a0as-override<\/span><\/p>\n

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

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

\u00a0root<\/span><\/p>\n

\u00a0show config<\/span><\/p>\n

\u00a0commit<\/span><\/p>\n

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

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

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

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

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

sh bgp vpnv6 u all sum<\/span><\/p>\n

sh bgp vpnv6 u all<\/span><\/p>\n

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

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

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

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

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

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

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

sh bgp vpnv6 u\u00a0sum<\/span><\/p>\n

sh bgp vpnv6 u<\/span><\/p>\n

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

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

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

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

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

\u00a0neighbor 2002:12::2<\/span><\/span><\/p>\n

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


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


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


\n\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

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

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

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


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


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

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

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

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

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


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


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

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

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


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


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

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

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

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


\n\u00a0 address-family ipv6 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


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


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


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


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

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

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

\u00a0neighbor 5.5.5.5<\/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 ipv6 labeled-unicast<\/span><\/span><\/p>\n

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

int 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


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


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

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

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

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

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

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

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

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


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

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

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

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


\n\u00a0router-id 4.4.4.4<\/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

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

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

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

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

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

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

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


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

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

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


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


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

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

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

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

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

\u00a0allocate-label all<\/span><\/span><\/p>\n

\u00a0neighbor 2002:56::6<\/span><\/span><\/p>\n

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


\n\u00a0 address-family ipv6 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


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


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


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


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

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

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

\u00a0neighbor 2.2.2.2<\/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 ipv6 labeled-unicast<\/span><\/span><\/p>\n

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

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


\n\u00a0bgp router-id 6.6.6.6<\/span><\/span><\/p>\n

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

\u00a0neighbor 2002:56::5 remote-as 100<\/span><\/span><\/span><\/p>\n

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

\u00a0 network 2002:6:6:6::6\/128<\/span><\/span><\/span><\/p>\n

\u00a0 neighbor 2002:56::5 activate<\/span><\/span><\/p>\n


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

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

! R1 and R6<\/span><\/span><\/p>\n

sh bgp ipv6 u sum<\/span><\/p>\n

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

sh route ipv6<\/span><\/p>\n

ping ipv6 2002:6:6:6::6 source 2002:1:1:1::1<\/span><\/p>\n

ping ipv6 2002:1:1:1::1 source 2002:6:6:6::6<\/span><\/p>\n

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

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

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

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

sh bgp ipv6 u sum<\/span><\/p>\n

sh bpg ipv6 u<\/span><\/p>\n

sh bgp ipv6 all sum<\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> To see information about the MP-BGP neighbor<\/p>\n

sh bgp ipv6 labeled-unicast sum<\/span><\/p>\n

\u00a0 \u00a0 \u00a0-> To see information about the MP-BGP neighbor<\/p>\n

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

sh bgp ipv6 u 2002:1:1:1::1<\/span><\/p>\n

sh bgp ipv6 u 2002:6:6:6::6<\/span><\/p>\n

sh bgp ipv6 u labels<\/span><\/p>\n

sh route ipv6<\/span><\/p>\n

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

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

IPv6 MPLS L3VPN (6PE)<\/p>\n","protected":false},"author":1,"featured_media":498,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[40,33,32,31],"class_list":["post-503","post","type-post","status-publish","format-standard","hentry","category-ccie","tag-ipv6","tag-l3vpn","tag-mpls","tag-published"],"_links":{"self":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/503","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=503"}],"version-history":[{"count":2,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/503\/revisions"}],"predecessor-version":[{"id":528,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/posts\/503\/revisions\/528"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=\/wp\/v2\/media\/498"}],"wp:attachment":[{"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feralpacket.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}