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WAN Concepts - Coggle Diagram
WAN Concepts
Modern WAN Connectivity
Dedicated Broadband
Companies built optical fiber networks with enough fiber to satisfy projected next generation needs.
Packet-Switched
Advances in Ethernet LAN technology have enabled it to expand into the MAN and WAN areas. Metro Ethernet provides fast bandwidth links and has been responsible for replacing many traditional WAN connectivity options.
Internet-based Broadband
Organizations are now commonly using the global internet infrastructure for WAN connectivity. To address the security concerns, the connectivity options are often combined with VPN technologies.
MPLS
Multiprotocol Label Switching (MPLS) is a high-performance service provider WAN routing technology to interconnect clients without regard to access method or payload. MPLS supports a variety of client access methods
Purpose of WANs
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WANs
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Public
Connection is typically provided by an ISP or telecommunications service provider using the internet
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WAN Operations
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SDH, SONET, and DWDM
SDH - Synchronous Digital Hierarchy (SDH) is a global standard for transporting data over fiber-optic cable.
SONET - Synchronous Optical Networking (SONET) is the North American standard that provides the same services as SDH.
Dense Wavelength Division Multiplexing (DWDM) is a newer technology that increases the data-carrying capacity of SDH and SONET by simultaneously sending multiple streams of data (multiplexing) using different wavelengths of light
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