6PE, a similar technology that is used to transport IPv6 traffic across an existing IPv4+MPLS core without touching your core equipment (P routers).
The primary reason for this solution is as of this writing LDP does not support IPv6 prefixes. You can not create a fully functional label switched core using IPv6. This requires making use of an existing IPv4 label switched core in order to distribute IPv6 labels properly. 6PE uses MP-BGP to distribute labels for IPv6 prefixes since LDP doesn’t currently support it.
We will be using the same network for this solution as we did for the 6VPE example:
R1===========================
ip cef
ipv6 unicast-routing
ipv6 cef
interface Loopback0
no ip address
ipv6 address 2000::1/128
!
interface e0/0
no ip address
no shutdown
!
interface e0/0.12
en do 12
no ip address
ipv6 address 2012::1/64
!
ipv6 route ::/0 2012::2
!
R2=========================================
hostname R2
ip cef
ipv6 unicast-routing
ipv6 cef
mpls label protocol ldp
mpls lab ran 2000 2999
interface Loopback0
ip address 2.2.2.2 255.255.255.255
interface e0/0
no ip address
no shutdown
!
interface e0/0.23
en do 23
ip address 23.1.1.2 255.255.255.0
mpls ip
!
interface e0/0.12
en do 12
no ip address
ipv6 address 2012::2/64
!
router ospf 100
router-id 2.2.2.2
log-adjacency-changes
network 2.2.2.2 0.0.0.0 area 0
network 23.1.1.2 0.0.0.0 area 0
!
router bgp 100
no bgp default ipv4-unicast
bgp log-neighbor-changes
neighbor 4.4.4.4 remote-as 100
neighbor 4.4.4.4 update-source Loopback0
!
!
address-family ipv6
redistribute connected
redistribute static
no synchronization
neighbor 4.4.4.4 activate
neighbor 4.4.4.4 send-label
exit-address-family
!
!
ipv6 route 2000::1/128 2012::1
!
mpls ldp router-id Loopback0
!
R3=====================================
ip cef
no ipv6 cef
!
!
mpls label protocol ldp
mpls lab ra 3000 3999
!
!
interface Loopback0
ip address 3.3.3.3 255.255.255.255
!
interface e0/0
no ip address
no shutdown
!
interface e0/0.23
en do 23
ip address 23.1.1.3 255.255.255.0
mpls ip
!
interface e0/0.34
en do 34
ip address 34.1.1.3 255.255.255.0
mpls ip
!
router ospf 100
router-id 3.3.3.3
log-adjacency-changes
network 3.3.3.3 0.0.0.0 area 0
network 23.1.1.3 0.0.0.0 area 0
network 34.1.1.3 0.0.0.0 area 0
mpls ldp router-id Loopback0
R4===================================
ip cef
ipv6 unicast-routing
ipv6 cef
!
!
mpls label protocol ldp
mpls lab r 4000 4999
!
interface Loopback0
ip address 4.4.4.4 255.255.255.255
!
interface e0/0
no ip address
no shutdown
!
interface e0/0.34
en do 34
ip address 34.1.1.4 255.255.255.0
mpls ip
!
interface e0/0.45
en do 45
no ip address
ipv6 address 2045::4/64
!
router ospf 100
router-id 4.4.4.4
log-adjacency-changes
network 4.4.4.4 0.0.0.0 area 0
network 34.1.1.4 0.0.0.0 area 0
!
router bgp 100
no bgp default ipv4-unicast
bgp log-neighbor-changes
neighbor 2.2.2.2 remote-as 100
neighbor 2.2.2.2 update-source Loopback0
!
address-family ipv4
no synchronization
no auto-summary
exit-address-family
!
address-family ipv6
redistribute connected
redistribute static
no synchronization
neighbor 2.2.2.2 activate
neighbor 2.2.2.2 send-label
exit-address-family
ipv6 route 2000::5/128 2045::5
!
mpls ldp router-id Loopback0
R5=================================================
ip cef
ipv6 unicast-routing
ipv6 cef
!
interface Loopback0
no ip address
ipv6 address 2000::5/128
!
interface e0/0
no ip address
no shutdown
!
interface e0/0.45
en do 45
no ip address
ipv6 address 2045::5/64
!
ipv6 route ::/0 2045::4
!
