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You could run Jumbo Frames switch-wide and have all ports but the SAN ones have the standard MTU. Unfortunately, that‘s not possible with Meraki.
@NolanHerring is right - Jumbo frames are enabled by default on Meraki switches.
With dynamic buffer management I don't see any point in changing it.
The problem is that the packets get fragmented at the firewall (ASA 5512-X) we got some issue with Microsoft Teams / Voice when fragmented