VMware NSX

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  • 1.  NSX-T NAT Problem

    Posted Dec 14, 2022 11:04 AM

    Hi everyone

    I'm using NSX-T 3.2.1 and something weird has happened to me after using NAT. some websites do not open! (in 3.1 i had same problem)

    Ping and name resolution work fine

    I have used different internet links from different providers and even I implemented in other datacenters but the result was the same

    when I use this IP on a vm connected to a VDS-backed port group i can reach those web sites

    I have used different vlans for Host and Edge TEPs

    I used live traceflow and it shows packets are delivered to the destination

    MTU has been set into 1700

    for example i cant open google.com but don't have problems opening MSN.com

    thanks in advance for any help


  • 2.  RE: NSX-T NAT Problem

    Posted Jan 11, 2023 12:30 PM

    Any ideas?

  • 3.  RE: NSX-T NAT Problem

    Broadcom Employee
    Posted Jan 20, 2023 01:15 PM


    some web sites cant open at all times (like google.com) or just sometimes (ie you need to try couple of times)?

    what's the setup on Edge nodes - ECMP in place? What is setup for uRPF on T0 uplinks?

    Thank you,


  • 4.  RE: NSX-T NAT Problem

    Posted Feb 01, 2023 03:52 PM

    Hi dragance

    Thanks for your reply

    ECMP is not Running on the Edge nodes, URPF is set to strict and even when I put one of the edges into MM, the result is the same. it has happened more than one time to me. I mean I think it's not just like a problem with target websites.

    Thank you