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Here is a list of currently trending KBs for NSX for vSphere

Netcpa issues in VMware NSX for vSphere 6.x (2137005)
Symptoms:

  • Virtual machines running on the same ESXi host fails to communicate with each other
  • Virtual machine fails to communicate with the NSX Edge Gateway (ESG)
  • Routing does not appear to be functioning despite having a defined route for the NSX Edge Gateway
  • Rebooting the NSX Edge does not resolve the issue
  • Running the esxcli network vswitch dvs vmware vxlan network list –vds-name=Name_VDS command on the ESXi host displays the VNIs as down

Network connectivity issues after upgrading or repreparing ESXi hosts in a VMware NSX/VCNS environment (2107951)
Symptoms:

  • Connecting virtual machines to a logical switch fails
  • Re-connecting the virtual machine to a logical switch fails

Oracle connections times out when forwarded through the VMware NSX for vSphere 6.1.x Edge (2126674)
Symptoms:

  • Oracle connections times out when forwarded through the VMware NSX for vSphere 6.1.x Edge
  • The NSX Edge is dropping packets and client/server keeps re-transmitting the same particular packets

MSRPC connections time out when forwarded through the VMware NSX for vSphere 6.1.x Edge (2137751)
Symptoms:

  • MSRPC connections time out when forwarded through the VMware NSX for vSphere 6.1.x Edge

Linux virtual machines with NFSv3 mounts experience an operating system hang after more than 15 minutes outage on the upstream datapath (2133815)
Symptoms:

  • Applications interacting with an NFSv3 mount experience a hang on hard mounted NFSv3 mounts or an error on soft mounted NFSv3 mounts after more than 15 minute upstream data path failure
  • The virtual machine performance increasingly degrades with the time it resides in an NFS hung state

VMware ESXi 6.0 Update 1 host fails with a purple diagnostic screen and reports the error: PANIC bora/vmkernel/main/dlmalloc.c:4923 – Usage error in dlmalloc (2135956)
Symptoms:

  • VMware ESXi 6.x host fails with a purple diagnostic screen
  • Netflow function is enabled on the ESXi host

Recommended minimum VMware Tools versions for Guest Instrospection in VMware NSX for vSphere 6.x (2139740)
Known issues:

  • Windows virtual machines using the vShield Endpoint TDI Manager or NSX Network Introspection Driver (vnetflt.sys) driver fails with a blue diagnostic screen

Understanding and troubleshooting Message Bus in VMware NSX for vSphere 6.x (2133897)
Symptoms:

  • This article can be referred to when it is suspected that a communication issue between the NSX Manager and the ESXi hosts is responsible for symptoms observed such as failure to publish configuration. Examples of such symptoms are:
    • Publishing firewall rules fails
    • Some of the ESXi hosts does not have the VDR/LIF information configured through the NSX Manager