Hi All,
I have configured VSAN among three servers, servers are Dell R640 and it has 4 fiber ports. Out of these 4, 2 are being used for management and production traffic and 2 are being used for vSAN and vMotion (In active Standby Mode).
It works well but after sometime or on performing tasks like creation of VM or Migration of VM, start seeing error in VSAN>Health for below, between two of the hosts.
vSAN: MTU check (ping with large packet size)
vMotion: Basic (unicast) connectivity check
In this scenario, if I login to esxi shell and run vmkping command to ping other host, I observe huge packet loss (more than 60%). If I login to switch and shut port used for vSAN on any of the switch and only one port is active, everything start working normally. But, in this scenario also, This issue will be repeated and I will have to shut or no shut ports at switch level again to provide a temporary fix.
Please can anyone help me to fix this permanently, it has become very dangerous now.
Thanks in advance.