MPLS VPN PE-CE Protocol(OSPF) Part 2

In this topic, provider will use OSPF as a PE-CE protocol. R5 Lo 0 is in area 0, Lo 1 is in area 1, Lo 2 is redistributed into OSPF.

In this section, provider will run OSPF without running OSPF super-backbone, different domain-id for the OSPF process used for adjacent with customer.

Configuration

R1

ip vrf one
rd 1:1
route-target export 1:1
route-target import 1:1
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0/0
ip address 192.168.12.1 255.255.255.0
ip router isis
duplex auto
speed auto
mpls ip
!
interface FastEthernet0/1
ip vrf forwarding one
ip address 192.168.14.1 255.255.255.0
duplex auto
speed auto
!
router ospf 1 vrf one
log-adjacency-changes
redistribute bgp 1 subnets route-map BLK_SHAM
network 192.168.14.1 0.0.0.0 area 0
!
router isis
net 49.0000.0000.0001.00
metric-style wide transition
passive-interface Loopback0
!
router bgp 1
no bgp default ipv4-unicast
bgp log-neighbor-changes
neighbor 2.2.2.2 remote-as 1
neighbor 2.2.2.2 update-source Loopback0
!
address-family ipv4
neighbor 2.2.2.2 activate
no auto-summary
no synchronization
exit-address-family
!
address-family vpnv4
neighbor 2.2.2.2 activate
neighbor 2.2.2.2 send-community extended
exit-address-family
!
address-family ipv4 vrf one
redistribute ospf 1 vrf one match internal external 1 external 2
no synchronization
exit-address-family
!
ip prefix-list SHAM seq 5 permit 1.1.1.1/32
ip prefix-list SHAM seq 10 permit 2.2.2.2/32
ip prefix-list SHAM seq 15 permit 3.3.3.3/32
!
route-map BLK_SHAM deny 10
match ip address prefix-list SHAM
!
route-map BLK_SHAM permit 100
!
mpls ldp router-id Loopback0 force

R2

ip vrf one
rd 1:2
route-target export 1:1
route-target import 1:1
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!
interface FastEthernet0/0
ip address 192.168.12.2 255.255.255.0
ip router isis
duplex auto
speed auto
mpls ip
!
interface FastEthernet1/0
ip vrf forwarding one
ip address 192.168.25.2 255.255.255.0
duplex auto
speed auto
!
router ospf 1 vrf one
domain-id type 0005 value 000000020200
log-adjacency-changes
redistribute bgp 1 subnets route-map BLK_SHAM
network 192.168.25.2 0.0.0.0 area 0
!
router isis
net 49.0000.0000.0002.00
metric-style wide transition
passive-interface Loopback0
!
router bgp 1
no bgp default ipv4-unicast
bgp log-neighbor-changes
neighbor IBGP peer-group
neighbor IBGP remote-as 1
neighbor IBGP update-source Loopback0
neighbor 1.1.1.1 peer-group IBGP
!
address-family vpnv4
neighbor IBGP send-community extended
neighbor IBGP route-reflector-client
neighbor 1.1.1.1 activate
exit-address-family
!
address-family ipv4 vrf one
redistribute ospf 1 vrf one match internal external 1 external 2
no synchronization
exit-address-family
!
ip prefix-list SHAM seq 5 permit 1.1.1.1/32
ip prefix-list SHAM seq 10 permit 2.2.2.2/32
ip prefix-list SHAM seq 15 permit 3.3.3.3/32
!
route-map BLK_SHAM deny 10
match ip address prefix-list SHAM
!
route-map BLK_SHAM permit 100
!
mpls ldp router-id Loopback0 force

R4

interface FastEthernet0/0
ip address 192.168.14.4 255.255.255.0
duplex auto
speed auto
!
router ospf 1
log-adjacency-changes
network 4.4.4.4 0.0.0.0 area 0

R5

interface Loopback0
ip address 5.5.5.5 255.255.255.255
!
interface Loopback1
ip address 5.5.5.1 255.255.255.255
!
interface Loopback2
ip address 5.5.5.2 255.255.255.255
!
interface FastEthernet0/0
ip address 192.168.25.5 255.255.255.0
speed 100
full-duplex
!
router ospf 1
log-adjacency-changes
redistribute connected subnets route-map CONN
network 5.5.5.1 0.0.0.0 area 1
network 5.5.5.5 0.0.0.0 area 0
network 192.168.25.5 0.0.0.0 area 0
!
ip prefix-list LO2 seq 5 permit 5.5.5.2/32
!
route-map CONN permit 10
match ip address prefix-list LO2

Verification

Due to without running super backbone and running different domain-id, all prefixes will appeared as external routes on R4.

R4#show ip route ospf
O E2 192.168.25.0/24 [110/1] via 192.168.14.1, 00:00:49, FastEthernet0/0
     5.0.0.0/32 is subnetted, 3 subnets
O E2    5.5.5.5 [110/2] via 192.168.14.1, 00:00:49, FastEthernet0/0
O E2    5.5.5.1 [110/2] via 192.168.14.1, 00:00:49, FastEthernet0/0
O E2    5.5.5.2 [110/20] via 192.168.14.1, 00:49:12, FastEthernet0/0

GNS File : http://www.4shared.com/rar/7AuMIJzg/mpls_vpn_pe-ce_with_ospf__no_s.html