![]() Change MTU on VDS distributed switches.This include switches, physical routers and firewalls and IPS devices if available through the communication data path between servers. Change MTU to 9K end-to-end on the physical network.The below guideline should be followed to do so: MTU should be changed end-to-end over the environment so that you can benefit from its value without any unexpected behavior. Before enabling Jumbo frames, check with your hardware vendor to ensure that your physical network adapter supports jumbo frames. Jumbo frames up to 9kB (9000 bytes) are supported. The network must support jumbo frames end-to-end. Jumbo frames are becoming more and more popular as they are heavily used in VSAN and NSX environments where the later requires a minimum MTU value of 1600. Jumbo Frames can significantly improve network performance and decrease the amount of CPU utilization on a server especially when using ISCSI storage. Jumbo frames allow ESXi to send larger frames out onto the physical network. A jumbo frame is an Ethernet frame with a payload greater than the standard maximum transmission unit (MTU) of 1,500 bytes.
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