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One
of the most obvious advantages of MPLS is that it provides network
administrators with a number of tools for traffic engineering. An
MPLS network can offer the same sort of quality of service guarantees
that data transport services like Frame Relay or ATM can, without
requiring the use of any dedicated lines.
An
administrator, for example, can define a LSP that ensures VoIP traffic
will be routed through the most reliable, highest performing sections
of the network while less critical traffic, such as email, is sent
across the slower sections.
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