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  • 1.  Juniper vMX

    Posted 04-28-2022 16:48
    Hi Guys,
    I'm trying to play a bit with juniper vMX and I want to implement PAT but I don't know how to do it.
    I've set up a basic topology in gns3 with a vMX and two cisco routers configure the following ip on cisco R1 as an ISP router and R1 from cisco with
    vMX has to act as a nat gateway and translate into but I couldn't find a documentation to help me do nat on this vmx .
    Can you help me please ?


  • 2.  RE: Juniper vMX

    Posted 04-29-2022 09:53
    I don't know if it is supported under vMX, but this is how NAT is configured on MX series routers (which the vMX would also fall under):

    NAT Configuration Overview | Juniper Networks

    Judging by this thread: NAT support on vMX | vMX ( there were some issues with it in the past, but not sure if it works/is supported nowadays.

  • 3.  RE: Juniper vMX

    Posted 04-29-2022 12:39

    i dont see the VMX supporting NAT services, usually we require Multiservices cards to support this feature on a real MX, what you can try maybe is INLINE NAT, below an example on how to configure it in a MX:



  • 4.  RE: Juniper vMX

    Posted 05-02-2022 15:48
    Unfortunately, vMX does not and will not ever support NAT.  If you want NAT, you should use a vSRX in front of the vMX in your gns3 topology.

    Eric Van Tol