I just wanted to know about the basic rules to be applied on Cisco Meraki MX-64 Device to allow all O365 Traffic from Branch office.
Kindly let me know your suggestions.
Do you need help with creating and applying a traffic shaping rule?
In my office, we created a rule to allow Windows Office 365 to ignore the network per-client limit, and gave it high priority.
We might be on different pages...
Are you strictly speaking of allow/deny Office 365 traffic through the Firewall, or about giving Office 365 traffic higher priority on the network?
(I may have spoken too soon when I replied to your initial question...)
I've looked into this myself and found this page for reference: http://technet.microsoft.com/library/hh373144.aspx
That said, I'm not sure the best way to get all of that into Meraki's firewall.