Hello, sirs.
I'm configuring multi-NIC vMotion for my lab and I bumped strange issue.
Usually multi-NIC vMotion works as expected (8 out of10).
Both source/destination hosts utilize couple of pNIC, and vMotion finishes very fast! ![]()
But sometimes (2 out of 10) vMotion utilizes only 1 NIC at the same set of hosts/configuration/VM.
I looked into the vmkernel.log and found possible culprit.
Every time vMotion failed to utilize both pNICs, vMotion process warned higher latency between hosts.
-------- exerpt of vmkernel.log-------------
WARNING: VMotion: 5609: 1358754058965731 S: Detected 7Ms round-trip latency between source host <src-IP> and destination host <dst-IP>, but vMotion is not configured for latency tolerance.
--------------------------------------------
My question is,
Does vMotion stops using multi-NIC when latency is high?
I searched various documents and web sites, but couldn't find clue.
Thank you for advance.