Running the same commands now will show there are no tunnels currently up between the remaining host transport nodes and nsx-en1.  Once the downed edge is brought back up, all is OK again.Similarly running get bfd-sessions on the edge virtual machine will list further details about the sessions between the edge nodes and the host transport nodes.

After deploying NSX-T 3 and configuring the basics such as; deploying edge virtual machines in active/active, T0 gateways, T1 gateways and some segments, some of you may start to test fail-over and resiliency.
Pings from nsx-en1 to the host TEP IP addresses and nsx-en2 are successful;
In NSX-T 3.0 the edges require an active BFD session in order to remain in an up/active state. When you have two edge virtual machines in a cluster, they create a session amongst themselves but will only create a session to a host when that host has active workload on it.. that is a virtual machine on an overlay segment. If you have VIP’s or
nsx-t edge node ping from edge to edge using tep ip

NSX-T 3.0 Edge Cluster


I’ll begin with showing the healthy edges in the cluster when both are up;

nsx-t edge cluster healthy

When performing these tests myself I noticed that when failing an edge virtual machine in a 2 node edge cluster, the remaining edge virtual machine would also move into a down state.. even though it was actually healthy and was able to communicate with the host teps!

The Edge TEPs are on 192.168.66.0/24 an the hosts are on 192.168.65.0/24, the below screen shot shows the edge being able to ping the host teps.nsx-t edge node tep ip addreses
When performing these tests myself I noticed that when failing an edge virtual machine in a 2 node edge cluster, the remaining edge virtual machine would also move into a down state.. even though it was actually healthy and was able to communicate with the host teps!
When performing these tests myself I noticed that when failing an edge virtual machine in a 2 node edge cluster, the remaining edge virtual machine would also move into a down state.. even though it was actually healthy and was able to communicate with the host teps!
When performing these tests myself I noticed that when failing an edge virtual machine in a 2 node edge cluster, the remaining edge virtual machine would also move into a down state.. even though it was actually healthy and was able to communicate with the host teps!
For the purpose of this article, the edge cluster consists of two edge virtual machines called nsx-en1 and nsx-en2.

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