Multi-VRF (VRF-Lite) With OSPF and BGP

Multivrf  (VRF-Lite)

MPLS Multi-VRF provides the extension to configure and maintain more than one instance of a routing and forwarding table within the same CPE router, That means we are hereby extending the vrf to CPE instead of PE to provide better services to customers by using same physical link  and differentiating the same IP network in different VRF’s. This results in, Customer can use same IP network for many different purpose in all locations, No need of more routers and links.

Example :

This is just a example, you can implement multivrf as per your requirement.

In this example, you will find Production and Management LAN is separated by CPE vrf. They are using same IP schema to communicate with remote site users for business work. Both users are not aware about any thing. In this example I Mainly included Multicast to show you in how to run multicast in multi-vrf (VRF-Lite) for each vrf in CPE. Here we configured sparse mode with BSR.

Here you can find some configuration examples for, Different protocols between CPE to PE.

1.       OSPF (Bit different from normal vrf config)

2.       BGP

Here you can see that, the above requirement is simulated in GNS3.

 

 

 

Plz download the files and run following commands for outputs.

http://www.ziddu.com/download/10959182/BGP_multivrf.rar.html

http://www.ziddu.com/download/10959183/OSPF_multivrf.rar.html

To check the outputs in CPE1 ( Mumbai) and CPE2 (Delhi)

Show ip route vrf PROD

Show ip route vrf MGMT

Ping vrf PROD x.x.x.x

Ping vrf MGMT x.x.x.x

Show ip mroute vrf PROD

Show ip mroute vrf MGMT

SAMPLE Configs:

CPE1:

!

ip vrf MGMT

 rd 100:2

!

ip vrf PROD

 rd 100:1

!

no ip domain lookup

ip multicast-routing

ip multicast-routing vrf MGMT

ip multicast-routing vrf PROD

!

interface Loopback0

 ip vrf forwarding MGMT

 ip address 192.168.1.1 255.255.255.0

 ip pim sparse-mode

!

interface Loopback1

 ip vrf forwarding PROD

 ip address 192.168.1.1 255.255.255.0

 ip pim sparse-mode

!

interface FastEthernet0/0

 no ip address

 duplex auto

 speed auto

!

interface FastEthernet0/0.10

 encapsulation dot1Q 10

 ip vrf forwarding PROD

 ip address 10.1.1.1 255.255.255.252

 ip pim sparse-mode

!

interface FastEthernet0/0.20

 encapsulation dot1Q 20

 ip vrf forwarding MGMT

 ip address 10.1.1.1 255.255.255.252

 ip pim sparse-dense-mode

 ip igmp join-group 239.2.2.2

!

interface FastEthernet0/1

 no ip address

 shutdown

 duplex auto

 speed auto

!

!

router bgp 65000

 no synchronization

 bgp router-id 1.1.1.1

 bgp log-neighbor-changes

 no auto-summary

 !

 address-family ipv4 vrf PROD

 neighbor 10.1.1.2 remote-as 100

 neighbor 10.1.1.2 activate

 no synchronization

 network 10.1.1.0 mask 255.255.255.252

 network 192.168.1.0

 exit-address-family

 !

 address-family ipv4 vrf MGMT

 neighbor 10.1.1.2 remote-as 100

 neighbor 10.1.1.2 activate

 no synchronization

 network 10.1.1.0 mask 255.255.255.252

 network 192.168.1.0

 exit-address-family

!

!

!

ip http server

no ip http secure-server

ip pim vrf PROD bsr-candidate Loopback1 0

ip pim vrf PROD rp-candidate Loopback1 group-list 1

!

access-list 1 permit 239.1.1.1

!

CPE 2 :

Config

!

ip vrf MGMT

 rd 100:2

!

ip vrf PROD

 rd 100:1

!

no ip domain lookup

ip multicast-routing

ip multicast-routing vrf MGMT

ip multicast-routing vrf PROD

!

interface Loopback0

 ip vrf forwarding PROD

 ip address 192.168.2.1 255.255.255.0

 ip pim sparse-mode

!

interface Loopback1

 ip vrf forwarding MGMT

 ip address 192.168.2.1 255.255.255.0

 ip pim sparse-mode

!

interface Loopback9

 no ip address

!

interface FastEthernet0/0

 no ip address

 shutdown

 duplex auto

 speed auto

!

interface FastEthernet0/1

 no ip address

 duplex auto

 speed auto

!

interface FastEthernet0/1.30

 encapsulation dot1Q 30

 ip vrf forwarding PROD

 ip address 20.1.1.1 255.255.255.252

 ip pim sparse-mode

 ip igmp join-group 239.1.1.1

!

interface FastEthernet0/1.40

 encapsulation dot1Q 40

 ip vrf forwarding MGMT

 ip address 20.1.1.1 255.255.255.252

 ip pim sparse-dense-mode

!

!

router bgp 65001

 no synchronization

 bgp router-id 2.2.2.2

 bgp log-neighbor-changes

 no auto-summary

 !

 address-family ipv4 vrf PROD

 neighbor 20.1.1.2 remote-as 100

 neighbor 20.1.1.2 activate

 no synchronization

 network 20.1.1.0 mask 255.255.255.252

 network 192.168.2.0

 exit-address-family

 !

 address-family ipv4 vrf MGMT

 neighbor 20.1.1.2 remote-as 100

 neighbor 20.1.1.2 activate

 no synchronization

 network 20.1.1.0 mask 255.255.255.252

 network 192.168.2.0

 exit-address-family

!

!

!

ip http server

no ip http secure-server

ip pim vrf MGMT bsr-candidate Loopback1 0

ip pim vrf MGMT rp-candidate Loopback1 group-list 1

!

access-list 1 permit 239.2.2.2

!

For any queries , Plz comment you will get reply ASAP.