distributed switch mtu

[backchecker]

Author : Alyc Helms

URL : http:////docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.vcenterhost.doc/GUID-11E78203-C7E8...

Topic Name : Configuring vCenter Server

Publication Name : vCenter Server and Host Management

Product/Version : VMware vSphere/6.7

Question :

mtu per switch or mtu per vlan with multiple vlans per switch

[daphnissov]

MTU cannot be configured at the port group level, so you only have one choice.

[ryanrpatel]

I always assign MTU to the Switch because it's also where your assign your NICs and other parameters. It's best practice to do it this way.

[daphnissov]

ryanrpatel wrote:

It's best practice to do it this way.

Well, it's the ​only way​ to do it.

[TheBobkin]

Hello Chip,

Actually it is not the only place this is configurable, sure of the choices given but potentially they meant different vmk in different PGs - it is also possible to change MTU at the vmk level independent of the vSwitch settings - unfortunately I see it often enough where someone configures it 9000 on the vmk but 1500 on the vswitch (and probably 9000 on the physical switch just to make sure it is as inconsistent as possible ).

Bob

[daphnissov]

Yes, I should have been clearer. Of the options specified the only one on which an MTU can be configured is the vDS