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Service chaining, not box chaining, in the WAN
Services are a relatively new concept in WANs. Devices and configurations were traditionally what made up a WAN, with routers, switches, load balancers, firewalls, proxy servers and other components positioned at appropriate points in the network. Enterprises have long grown accustomed to the use of appliances—or “middle boxes” to perform a single function, and the maintenance and management of these devices can be a real headache for IT teams.+ Also on Network World: SD-WAN: What it is and why you’ll use it one day +To read this article in full or to leave a comment, please click here