VMware NSX

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  • 1.  MAC address disappears

    Posted Feb 22, 2019 10:10 PM

    When connection is some time idle, cant connect/ping anymore VM in logical switch, bridged to portgroup. In arp table (computer outside NSX) there is nothing. Seems like some NSX switch MAC table becomes full, because other connections stay.

  • 2.  RE: MAC address disappears

    Posted Feb 23, 2019 01:51 AM

    Very strange, but after vCenter reboot, all seems accessible again. But NSX still have latency. VM connected directly to portgroup every ping starts with 1ms. But when through logical switch and edge bridge, after waiting about 5 min, first ping is about 800 ms.

  • 3.  RE: MAC address disappears

    Posted Feb 23, 2019 10:41 AM

    But still, next day again no ping to VM. Seems NSX logigal switch or whole NSX (maybe edge bridge also) is absolutely non trustable software. If you search problems, then put VM-s into logical switch. When software first works, but example after hour or day stop working, then what you think the problem is. There probably some buffer or MAC table goes full and developed software dont know what to to nex when example some buffer or memory goes full. Developers IQ cant at all get this kind of situation. And also, with distributed switch I was able to set topology view and there was list of all portgroups, VLAN numbers and VM-s in this portgroup. Where in NSX is this kind of topology view? Too hard to develop? VMWare dont have money for developing?

  • 4.  RE: MAC address disappears
    Best Answer

    Posted Feb 24, 2019 11:14 AM

    I find the problem. Seems in logical switch setting "Enable IP Discovery" appears very evil option - when I disabled it, network becomes again functional and also without lag.