Leased Line is one of the network transmission implementation for #Wide Area Network (WAN) in which a private connection is pre-established from one site through a service provider’s network to a remote site.
Point-to-Point/Leased Line
- Wide Area Network (WAN)
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Virtual Private Network (VPN)
VPN allows individuals sends and/or receives data across public network as if they are connected to a dedicated private network. For example, people in their own home can access to their corporate private sites using VPN provided by the company. This negates the need for Point-to-Point/Leased Line. To avoid eavesdropping, a typical implementation of VPN involves authentication and encryption using #IP Security (IPsec).
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Multiprotocol Label Switching (MPLS)
MPLS is a Data Link Layer# #Wide Area Network (WAN) backbone technology that delivers WAN and MAN services. It is one of the alternative to replace the legacy Frame Relay, Asynchronous Transfer Mode (ATM) and Point-to-Point/Leased Line as it can provide their functionalities in a multiservice form. Though it can be used to aggregate and transport Frame Relay, ATM, and IP-based traffic, the former two could be done using Any Transport over MPLS (AToM) technology. It also provides the Virtual Private Network (VPN)# technology.
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Frame Relay
Frame Relay is a #packet-switched Wide Area Network (WAN) service that operate at the Physical Layer# (EIA/TIA-232 specification is the standard) and Data Link Layer#. Its speed usually ranges from 56 kbps to 2Mbps, and it provides connection-oriented services using virtual circuits. Recently, it’s been viewed as obsolete because of the wide adoption of Dense Leased Line (DLL).