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Requirement of Basic MPLS VPN configuration

HI

Can any one please send me some MPLS VPN configuration guidlines for easy understanding....and quick implementation.....????????

2 REPLIES

Re: Requirement of Basic MPLS VPN configuration

Are you on the carrier side or the customer? Is it layer 2 or 3? If it's layer 3 are they using anything other than BGP?

Re: Requirement of Basic MPLS VPN configuration

Hi jagen

sharing a sample config for reference. Assume you have two routers and you want to configure MPLS VPN between them,

Both routers are connected to two different customer Customer_A and Customer_B

---Cust_A-----                   ---Cust_A-----

                   PEA----PEB

---Cust_B----                   ---Cust_B----

PE:

PEA#

ip vrf VPN_A

rd 9730:5182

route-target export 9730:5182

route-target import 9730:5182

maximum routes 5000 80

ip vrf VPN_B

rd 9730:5182

route-target export 9730:5183

route-target import 9730:5183

maximum routes 5000 80

Router bgp 9730

address-family ipv4 vrf VPN_A

no synchronization

bgp dampening

redistribute connected

redistribute static

exit-address-family

address-family ipv4 vrf VPN_B

no synchronization

bgp dampening

redistribute connected

redistribute static

exit-address-family

PEB#

PEB#

ip vrf VPN_A

rd 9730:5182

route-target export 9730:5182

route-target import 9730:5182

maximum routes 5000 80

ip vrf VPN_B

rd 9730:5182

route-target export 9730:5183

route-target import 9730:5183

maximum routes 5000 80

Router bgp 9730

address-family ipv4 vrf VPN_A

no synchronization

bgp dampening

redistribute connected

redistribute static

exit-address-family

address-family ipv4 vrf VPN_B

no synchronization

bgp dampening

redistribute connected

redistribute static

exit-address-family

This is very simple example of VPN, however there are many flavor like

1- You have to run MP-BGP in between PEA and PEB to send vpnv4 routes across cloud.

2- If you have any P router in between PEA and PEB then you need to run MPLS between them, in case 1 also

3- If you have more than two router then you have to run full mesh IBGP or introduce RR.

4- This VPN is example of MESH topology , config could be different for Hub and spoke topology or any hybrid topology

to answer all this it is required to know what is your requirement. also sharing document for reference

http://www.cisco.com/en/US/tech/tk436/tk428/technologies_configuration_example09186a00800a6c11.shtml

Regards

Mahesh

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