IEEE 802.1s - This is MST, not supported. Meraki switches only do 802.1w (RSTP). IEEE 802.3x - This is Flow Control. I do not believe this is supported (I've never seen it anyway). Check with your Meraki rep. IEEE 802.3 - This is Ethernet. If it's not supported then Meraki has some serious issues... IEEE 802.3u - This is 100Base-TX. Supported. IEEE 802.3ab - This is 1000Base-T. Supported. IEEE 802.3z - This is 1000Base-X. Supported, but check the compatible SFP list. IEEE 802.3az - This is EEE. I'm unsure if this is supported... I can't find anything that says either way. Check with your Meraki rep. IEEE 802.1ax - This is 802.3ad AKA LACP. Supported.  ... View more