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Forum Replies

  1. Thanks Rene, im now studying EVN, and you mention that

    "When we use VRF lite we have to configure sub-interfaces for each VRF on the Gigabit3 interfaces of ISP1 and ISP2. Each sub-interface belongs to a different VRF and uses 802.1Q encapsulation to differentiate the different VRFs."

    but there's no scenario here in VRF lite where you configure 2 ISP and have a subinterface both on each.

  2. Hi John,

    I think you already figured it out but just in case someone else reads it...:slight_smile: In this example, I used some physical interfaces to show how VRFs work. In reality however an ISP might have a lot of sub-interfaces that will be used in VRFs.

    This is one of the "sales" pitches of EVN, it automatically creates the sub-interfaces with the correct tags and everything. In the EVN example I do have the two ISP routers.


  3. Thanks Rene, great tutorial.

    Let us know when you do a tutorial for MP-BGP, that is of particular interest to me as we will become responsible for a network using MP-BGP in the near future.



  4. Hi Rene,

    I have to ask one question for this VF life. As per lab design, Now i want to communicate red customer and blue customer. Because I want to use one router in our network and i will create two vrf in this router. At this time, some of user need to communicate with another vrf user (inter vrf routing). Is it possible for my design?


  5. Hi,

    Did you see this example?

    VRF Lite

    Basically a VRF is nothing more but having multiple routing tables instead of one global routing table.

    When we use VRFs without MPLS, we call it VRF "lite".


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