I have a Meraki 220 switch connected to a Cisco intergrated Etherswitch (essentially a 3750 built into a Cisco 2921 ISR.) The Etherswitch is the root bridge. I noticed that the default MTU on the Meraki is set to 9578 where as the MTU on all ports on the Etherswitch is 1500. Should I just lower the MTU on the Meraki? Or does it likely not matter? The devices connecting to the Meraki are generally Cisco phones that then may have a laptop attached to them. Thank you.