What Is Traffic Engineering?
Before you can understand how to use MPLS to do traffic engineering, you need to understand what traffic engineering is.
When dealing with network growth and expansion, there are two kinds of engineering—network engineering and traffic engineering.
Network engineering is manipulating your network to suit your traffic. You make the best predictions you can about how traffic will flow across your network, and you then order the appropriate circuits and networking devices (routers, switches, and so on). Network engineering is typically done over a fairly long scale (weeks/months/years) because the lead time to install new circuits or equipment can be lengthy.
Traffic engineering is manipulating your traffic to fit your ...
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