Future of WAN Includes SDN, NFV, Multiple Connections
At the recent WAN Summit, panelists talked about the pressures being put on the WAN, how SDN and NFV will help, and the future of MPLS.When Chalan Aras thinks about the future of wide-area networks, he sees an infrastructure under increasing pressure caused by everything from growing IT mobility and cloud computing to bandwidth-intensive applications like video to the Internet of things. Aras also sees organizations that want their technology vendors to come up with solutions that are easy to use and affordable. "The apps are demanding a lot more bandwidth [and] a lot more reliability," Aras, vice president and general manager of CloudBridge marketing for Citrix Systems, told eWEEK during an interview at the recent WAN Summit 2015 in New York City. "But no one's willing to pay for that. … It's as much an economic challenge as a technological challenge. “Aras was among a number of speakers during the two-day event, where the focus was on the multiple demands being put on WANs, what enterprises will look like in the future and the technologies—such as software-defined networking (SDN) and network-functions virtualization (NFV)—that will help WANs address those demands. Cisco Systems for several years has been tracking the growth of network traffic, noting in February that by 2019, mobile traffic alone—thanks to the growth of more powerful mobile devices, the rise in machine-to-machine connects and faster WiFi networks—will hit 292 exabytes, up from 30 exabytes in 2014. Video will continue to grow as a major factor in mobile traffic. Currently accounts for 55 percent of traffic; by 2019, that figure will be 72 percent. During the WAN Summit, Khalid Raza, CTO at network architect startup Viptela, and others noted the rapid growth of video in WAN traffic.
"That's having an impact on current bandwidth requirements," Raza said.