NSX Overlay stops working – Troubleshooting and fix (can’t ping my virtual machine)

I can’t ping my virtual machines on my NSX-T overlay network.

I noticed that my host overlay TEP doesn’t get it’s DHCP ip’s, instead they are getting a default of 169.x.x.x.

My overlay virtual machine ip’s address looks ok.

My segment config looks ok has the proper gateway.

I can ping from vyos router the segment gateway but not my virtual machine on the nsx-t overlay network

I reconfigure my esxi hosts with its existing settings as sometimes they need re-applying when there some type of outage. Didn’t fix my issue

I restart my management on my ESXi hosts – Didn’t fix my issue

/etc/init.d/hostd restart

/etc/init.d/vpxa restart

I restart all my management on my esxi hosts this will have brief outage. Didn’t fix my issue.

/sbin/services.sh restart

My dhcp configuration went missing on my vyos box

“show dhcp server leases” shows no DHCP server configured

Re-applied my dhcp settings for my ESXi host tep network

set service dhcp-server shared-network-name DHCP_Pool_ETH6 subnet 172.16.254.0/24

set service dhcp-server shared-network-name DHCP_Pool_ETH6 authoritative enable

set service dhcp-server shared-network-name DHCP_Pool_ETH6 subnet 172.16.254.0/24 start 172.16.254.6 stop 172.16.254.254

I can now see my leases.

show dhcp server leases

My IP’s have updated on my ESXi hosts

I can ping my virtual machine on my overlay network