topic Re: Multiple MTU on a Single Interface Group in ONTAP Discussions

Multiple MTU on a Single Interface Group

apenkontap — Wed, 04 Jun 2025 19:38:10 GMT

Hi,

I'm handling this project of clustered Data ONTAP that I only have 2 physical interface for both iSCSI and CIFS data LIFs.

Considering the availability standpoint, I have made grouped those interface into a single interface group.

For iSCSI, the customer wants to use 9000 MTU, and set CIFS with 1500 MTU.

Can this configuration be achieved?

Would you share some more information on how to accomplish the configuration?

Thank you.

Apenk

PrakashMK — Sat, 06 Aug 2016 06:30:30 GMT

Applying multiple MTU values on a ifgrp is not possible. It is only possible in Physical port.

aborzenkov — Sat, 06 Aug 2016 08:32:36 GMT

You can set up different VLANs and set different MTU for each.

bobshouseofcards — Mon, 08 Aug 2016 17:55:16 GMT

And set the MTU for the port group before VLANs to the highest MTU you might need.