IPv6实验 6PE

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
!