Edge device
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In
ATM switch) may be called an edge concentrator.[3]
Functions
In general,
PPPoE) to faster, more efficient backbone and core networks. The trend is to make the edge device smart and the core device(s) "dumb and fast", so edge routers often include quality of service (QoS) and multi-service functions to manage different types of traffic. Consequently, core networks are often designed with switches that use routing protocols such as Open Shortest Path First (OSPF) or Multiprotocol Label Switching (MPLS) for reliability and scalability, allowing edge routers to have redundant links to the core network. Links between core networks are different—for example, Border Gateway Protocol
(BGP) routers are often used for peering exchanges.
Translation
Edge devices may translate between one type of network protocol and another. For example,
optical fibre use a passive optical network subscriber loop such as GPON, with the edge device connecting to Ethernet for backhaul (telecommunications)
.
Multiservice units
An edge switch for a WAN may be a multiservice unit, meaning that it supports a wide variety of communication technologies, including
virtual private networking (VPN) support, Voice over IP
, and QoS services.
References
- ^ "Edge Device". Hewlett Packard. 2024. Retrieved 7 February 2024.
- ^ "What Is an Edge Router?". Cisco. 2024. Retrieved 7 February 2024.
- ^ "Definition of edge concentrator". PCMAG. Retrieved 27 February 2024.
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