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MPLS and VPN Architectures, Volume II by Jeff Apcar, Ivan Pepelnjak, Jim Guichard

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Providing DSL Access to an MPLS VPN

The DSL technology provides high-speed network access over a pair of copper wires, which essentially is the local loop from the telephone company central office (CO) to residential or business premises. A modulation technology called Discrete Multitone (DMT) allows the transmission of high-speed data over the copper pair. It is not within the scope of this book to explain the details of DSL operation; however, the aspects that relate to successful operation within an MPLS VPN network are covered in the following sections.

DSL has the following basic components:

  • At the customer end, there is a customer premises equipment (CPE), which can be a device, such as a router (preferably Cisco). Alternatively, it can ...

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