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The Software-Defined Wide Area Network (SD-WAN) overlay is expected to revolutionize the way it designs and operates hybrid WANs. So, what should companies consider?
However, many companies are dealing with a much more complex hybrid WAN, which can pose significant challenges. Hybrid WAN means that multiple technologies are integrated to provide an end-to-end solution; this may include MPLS, VPLS, peer-to-peer and Internet VPN. Traffic between end users and applications can span multiple technologies and involve multiple administrative responsibility boundaries. I have been exposed to many multinational companies that operate such networks, and I often hear these complaints:
1. A lot of bandwidth is wasted because the alternate internetwork circuit is often idle to prevent failures on the MPLS network.
2. The performance of Internet applications is often poor because traffic is transmitted back over slower MPLS links and transmitted to the data center Internet breakout point.
3. Application layer reporting is difficult because the network often includes user internal components and vendor-managed components, each with its own system and tools.
Read More; wan definition