An administrator has received reports of intermittent connectivity between virtual machines on an
NSX network. The network team has verified that all physical network devices have been set to
1600 MTU.
What other configuration could cause this issue?
A.
An MTU value of 1500 on the vDS Switch
B.
An MTU value of 1500 on the distributed firewall
C.
An MTU value of 1500 on the logical router
D.
An MTU value of 1500 on the logical load balancer
I would say A. The vDS will also process physical traffic heading for Edge devices
A is correct. the vDS MTU must be at least 1550.
http://pubs.vmware.com/NSX-62/index.jsp?topic=%2Fcom.vmware.nsx-cross-vcenter-install.doc%2FGUID-49BAECC2-B800-4670-AD8C-A5292ED6BC19.html