I just wanted to take a moment to write a quick article on some useful commands I use for troubleshooting NSX-T 2.4 By no means is this everything and I will update this article routinly.
How to find VTEP (Tunnel End Points)
From NSX Manager
#get logical-switch vtep
From ESXi Host to display TEP end point
#esxcfg-vmnic -l
and
#esxcli network ip interface ipv4 get
Other good commands you may use
From ESXi ping between VTEPs to confirm connectivity
#ping ++netstack=vxlan
or if you want a particular destination with a particular size packet
#ping ++netstack=vxlan -s <packet size> -d <Destination IP>
You can also perform a traceroute from the above with one subtle change
#traceroute ++netstack=vxlan
From ESXi Host to display the NSX-T VIBs to confirm they have all uploaded
#esxcli software vib list | grep nsx
From ESXi Host to display your NSX switches & N-VDS
#esxcfg-vswitch -l
From ESXi Host to display vmk interface with a VDS name that matches the name you used when you configured the transport zone and the transport node
#esxcli network ip interface list
NSX Manager to display ARP Table
#get logical-switch arp-table
On NSX to display the MAC table for a specific LS
#get logical-switch mac-table
NSX Manager to display transport node table
#get logical-switch transport-node-table
From NSX Edge to see routes
#get logical-router
#vrf <number of T0>
#get route
From NSX Edge to see BGP Neighbor
#get logical-router
#vrf <number of T0>
#get bgp neighbor
From NSX Manager to see the tunnel between Transport Hosts
#get host-switch tunnels
Summary:
On purpose have I stared with more ESXi host commands to show that even though NSX-T presents an opaque network, you can still turn to ESXi to help troubleshoot issues.
