Dual MPLS vs Hybrid vs Internet as WAN
cr. http://pt.slideshare.net/CiscoEnterpriseNetworks/revolutionizing-network-management-with-a-softwaredefined-wan?smtNoRedir=1
VPN IPSec
cr. http://pt.slideshare.net/CiscoEnterpriseNetworks/revolutionizing-network-management-with-a-softwaredefined-wan?smtNoRedir=1