What is the difference between a VRF and VRF-Lite?

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To the best of my knowledge, the concept of VRF is something that exists only in the Cisco World. Other vendors refer to this concept as VPN, which is in other words, a way to keep routing tables separated within a router.



Knowing that what is the meaning of VRF-Lite and how vendors refer to this concept?










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  • 2




    A VPN has nothing to do with a VRF.
    – Ron Maupin♦
    Sep 5 at 12:04










  • Ok, but how is VRF concept identified outside cisco?
    – user
    Sep 5 at 12:41






  • 2




    As a VRF. The term is not specific to Cisco. A full-blown VRF implementation can use VPNs to transport routing updates, but VPNs are not dependent on VRFs.
    – Ron Maupin♦
    Sep 5 at 12:47














up vote
4
down vote

favorite












To the best of my knowledge, the concept of VRF is something that exists only in the Cisco World. Other vendors refer to this concept as VPN, which is in other words, a way to keep routing tables separated within a router.



Knowing that what is the meaning of VRF-Lite and how vendors refer to this concept?










share|improve this question



















  • 2




    A VPN has nothing to do with a VRF.
    – Ron Maupin♦
    Sep 5 at 12:04










  • Ok, but how is VRF concept identified outside cisco?
    – user
    Sep 5 at 12:41






  • 2




    As a VRF. The term is not specific to Cisco. A full-blown VRF implementation can use VPNs to transport routing updates, but VPNs are not dependent on VRFs.
    – Ron Maupin♦
    Sep 5 at 12:47












up vote
4
down vote

favorite









up vote
4
down vote

favorite











To the best of my knowledge, the concept of VRF is something that exists only in the Cisco World. Other vendors refer to this concept as VPN, which is in other words, a way to keep routing tables separated within a router.



Knowing that what is the meaning of VRF-Lite and how vendors refer to this concept?










share|improve this question















To the best of my knowledge, the concept of VRF is something that exists only in the Cisco World. Other vendors refer to this concept as VPN, which is in other words, a way to keep routing tables separated within a router.



Knowing that what is the meaning of VRF-Lite and how vendors refer to this concept?







vrf vrf-lite






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share|improve this question













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edited Sep 5 at 12:07









Cown

4,5813830




4,5813830










asked Sep 5 at 11:59









user

925




925







  • 2




    A VPN has nothing to do with a VRF.
    – Ron Maupin♦
    Sep 5 at 12:04










  • Ok, but how is VRF concept identified outside cisco?
    – user
    Sep 5 at 12:41






  • 2




    As a VRF. The term is not specific to Cisco. A full-blown VRF implementation can use VPNs to transport routing updates, but VPNs are not dependent on VRFs.
    – Ron Maupin♦
    Sep 5 at 12:47












  • 2




    A VPN has nothing to do with a VRF.
    – Ron Maupin♦
    Sep 5 at 12:04










  • Ok, but how is VRF concept identified outside cisco?
    – user
    Sep 5 at 12:41






  • 2




    As a VRF. The term is not specific to Cisco. A full-blown VRF implementation can use VPNs to transport routing updates, but VPNs are not dependent on VRFs.
    – Ron Maupin♦
    Sep 5 at 12:47







2




2




A VPN has nothing to do with a VRF.
– Ron Maupin♦
Sep 5 at 12:04




A VPN has nothing to do with a VRF.
– Ron Maupin♦
Sep 5 at 12:04












Ok, but how is VRF concept identified outside cisco?
– user
Sep 5 at 12:41




Ok, but how is VRF concept identified outside cisco?
– user
Sep 5 at 12:41




2




2




As a VRF. The term is not specific to Cisco. A full-blown VRF implementation can use VPNs to transport routing updates, but VPNs are not dependent on VRFs.
– Ron Maupin♦
Sep 5 at 12:47




As a VRF. The term is not specific to Cisco. A full-blown VRF implementation can use VPNs to transport routing updates, but VPNs are not dependent on VRFs.
– Ron Maupin♦
Sep 5 at 12:47










2 Answers
2






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up vote
1
down vote



accepted










VRF (virtual routing and forwarding) is a core technology of MPLS which allows a service provider to provide BGP routing to many customer VPNs while isolating each customer's routing tables.



VRF lite provides the same isolation in an enterprise LAN.



Imagine you have a corporate LAN with a number of VLANs and a default gateway to the corporate WAN.



If you want to add a guest VLAN with a default gateway to the internet, you can simply exclude it from the corporate LAN by not providing a switched virtual interface (interface Vlan on Cisco) on the guest VLAN.



Now suppose you need a second guest VLAN and you need to route between the two guest VLANs and the Internet without opening a hole to the corporate LAN.



This is a use case for VRF lite. On each layer 3 switch or router, you create a VRF for the corporate LAN and a VRF for the guest LAN. You map the VLANs to the appropriate VRFs. There are now two separate routing tables and no traffic can pass between them (unless you specifically configure that).






share|improve this answer



























    up vote
    3
    down vote













    VRF lite is used to separate router interfaces within the routing tables. It can be used when multiple customers share a router. Full blown VRF has the full MP-BGP across the MPLS and can be shared across multiple sites/locations.






    share|improve this answer




















    • So If I understood correctly, the VRF lite is a concept referred locally on a single router, whereas the VRF is the extension of the same concept when shared across multiple sites/locations. Why did you mention MPLS?
      – user
      Sep 5 at 15:20










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    2 Answers
    2






    active

    oldest

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    2 Answers
    2






    active

    oldest

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    active

    oldest

    votes






    active

    oldest

    votes








    up vote
    1
    down vote



    accepted










    VRF (virtual routing and forwarding) is a core technology of MPLS which allows a service provider to provide BGP routing to many customer VPNs while isolating each customer's routing tables.



    VRF lite provides the same isolation in an enterprise LAN.



    Imagine you have a corporate LAN with a number of VLANs and a default gateway to the corporate WAN.



    If you want to add a guest VLAN with a default gateway to the internet, you can simply exclude it from the corporate LAN by not providing a switched virtual interface (interface Vlan on Cisco) on the guest VLAN.



    Now suppose you need a second guest VLAN and you need to route between the two guest VLANs and the Internet without opening a hole to the corporate LAN.



    This is a use case for VRF lite. On each layer 3 switch or router, you create a VRF for the corporate LAN and a VRF for the guest LAN. You map the VLANs to the appropriate VRFs. There are now two separate routing tables and no traffic can pass between them (unless you specifically configure that).






    share|improve this answer
























      up vote
      1
      down vote



      accepted










      VRF (virtual routing and forwarding) is a core technology of MPLS which allows a service provider to provide BGP routing to many customer VPNs while isolating each customer's routing tables.



      VRF lite provides the same isolation in an enterprise LAN.



      Imagine you have a corporate LAN with a number of VLANs and a default gateway to the corporate WAN.



      If you want to add a guest VLAN with a default gateway to the internet, you can simply exclude it from the corporate LAN by not providing a switched virtual interface (interface Vlan on Cisco) on the guest VLAN.



      Now suppose you need a second guest VLAN and you need to route between the two guest VLANs and the Internet without opening a hole to the corporate LAN.



      This is a use case for VRF lite. On each layer 3 switch or router, you create a VRF for the corporate LAN and a VRF for the guest LAN. You map the VLANs to the appropriate VRFs. There are now two separate routing tables and no traffic can pass between them (unless you specifically configure that).






      share|improve this answer






















        up vote
        1
        down vote



        accepted







        up vote
        1
        down vote



        accepted






        VRF (virtual routing and forwarding) is a core technology of MPLS which allows a service provider to provide BGP routing to many customer VPNs while isolating each customer's routing tables.



        VRF lite provides the same isolation in an enterprise LAN.



        Imagine you have a corporate LAN with a number of VLANs and a default gateway to the corporate WAN.



        If you want to add a guest VLAN with a default gateway to the internet, you can simply exclude it from the corporate LAN by not providing a switched virtual interface (interface Vlan on Cisco) on the guest VLAN.



        Now suppose you need a second guest VLAN and you need to route between the two guest VLANs and the Internet without opening a hole to the corporate LAN.



        This is a use case for VRF lite. On each layer 3 switch or router, you create a VRF for the corporate LAN and a VRF for the guest LAN. You map the VLANs to the appropriate VRFs. There are now two separate routing tables and no traffic can pass between them (unless you specifically configure that).






        share|improve this answer












        VRF (virtual routing and forwarding) is a core technology of MPLS which allows a service provider to provide BGP routing to many customer VPNs while isolating each customer's routing tables.



        VRF lite provides the same isolation in an enterprise LAN.



        Imagine you have a corporate LAN with a number of VLANs and a default gateway to the corporate WAN.



        If you want to add a guest VLAN with a default gateway to the internet, you can simply exclude it from the corporate LAN by not providing a switched virtual interface (interface Vlan on Cisco) on the guest VLAN.



        Now suppose you need a second guest VLAN and you need to route between the two guest VLANs and the Internet without opening a hole to the corporate LAN.



        This is a use case for VRF lite. On each layer 3 switch or router, you create a VRF for the corporate LAN and a VRF for the guest LAN. You map the VLANs to the appropriate VRFs. There are now two separate routing tables and no traffic can pass between them (unless you specifically configure that).







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Sep 5 at 15:59









        grahamj42

        1262




        1262




















            up vote
            3
            down vote













            VRF lite is used to separate router interfaces within the routing tables. It can be used when multiple customers share a router. Full blown VRF has the full MP-BGP across the MPLS and can be shared across multiple sites/locations.






            share|improve this answer




















            • So If I understood correctly, the VRF lite is a concept referred locally on a single router, whereas the VRF is the extension of the same concept when shared across multiple sites/locations. Why did you mention MPLS?
              – user
              Sep 5 at 15:20














            up vote
            3
            down vote













            VRF lite is used to separate router interfaces within the routing tables. It can be used when multiple customers share a router. Full blown VRF has the full MP-BGP across the MPLS and can be shared across multiple sites/locations.






            share|improve this answer




















            • So If I understood correctly, the VRF lite is a concept referred locally on a single router, whereas the VRF is the extension of the same concept when shared across multiple sites/locations. Why did you mention MPLS?
              – user
              Sep 5 at 15:20












            up vote
            3
            down vote










            up vote
            3
            down vote









            VRF lite is used to separate router interfaces within the routing tables. It can be used when multiple customers share a router. Full blown VRF has the full MP-BGP across the MPLS and can be shared across multiple sites/locations.






            share|improve this answer












            VRF lite is used to separate router interfaces within the routing tables. It can be used when multiple customers share a router. Full blown VRF has the full MP-BGP across the MPLS and can be shared across multiple sites/locations.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Sep 5 at 12:05









            Cown

            4,5813830




            4,5813830











            • So If I understood correctly, the VRF lite is a concept referred locally on a single router, whereas the VRF is the extension of the same concept when shared across multiple sites/locations. Why did you mention MPLS?
              – user
              Sep 5 at 15:20
















            • So If I understood correctly, the VRF lite is a concept referred locally on a single router, whereas the VRF is the extension of the same concept when shared across multiple sites/locations. Why did you mention MPLS?
              – user
              Sep 5 at 15:20















            So If I understood correctly, the VRF lite is a concept referred locally on a single router, whereas the VRF is the extension of the same concept when shared across multiple sites/locations. Why did you mention MPLS?
            – user
            Sep 5 at 15:20




            So If I understood correctly, the VRF lite is a concept referred locally on a single router, whereas the VRF is the extension of the same concept when shared across multiple sites/locations. Why did you mention MPLS?
            – user
            Sep 5 at 15:20

















             

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