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Computer and Communication Networks, Second Edition by Nader F. Mir

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Chapter 14. Tunneling, VPNs, and MPLS Networks

Returning to layers 3 and 4 of the protocol reference model, this chapter introduces some special-purpose networking features, in particular, how networks can be tunneled. In networking, tunneling is the act of encapsulating a packet from one protocol into another one. Among application-specific communication networks, virtual private networks (VPNs) and multiprotocol label switching (MPLS) networks are two important and popular tunnel-based ones discussed in this chapter. These two network infrastructures can also be tied together for certain applications. The main topics covered in of this chapter are

Tunneling

Virtual private networks (VPNs)

Multiprotocol label switching (MPLS)

The chapter ...

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