Wanted to make a quick post about enabling Jumbo Frames in my VMware environment! My switches (Cisco SG-200 & SG-500) support Jumbo Frames so I thought why not? It would surely help push more data through the network for faster for VSAN and vMotions. I’ll do some speed tests later to compare!
Before you start out on this quest ensure your physical switch support jumbo frames. When enabling it on my Cisco switches a switch reboot was required:
The next step is to ensure the NICs in your servers support jumbo frames. If they are server NICs then they should. My Dell T620/R520 both have Broadcom NetXtreme 5709 which in fact support Jumbo Frames.