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5 Cards in this Set
- Front
- Back
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5 Attributes of Carrier Ethernet
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Standardized services
Scalability Reliability Service management Quality of service |
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CEN
CE UNI |
Carrier Ethernet Network
Customer Equipment User Network Interface |
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Service Type: E-Line
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Defined in MEF 6.1: An E-Line is a point to point Ethernet service that connects exactly 2 UNIs.
Those 2 UNIs can communicate only with each other. E-Lines are used to create:- Ethernet Private Lines Ethernet Virtual Private Lines Ethernet Internet access For example, it can be used to replace TDM private lines. E-Line is the most popular Ethernet service type due to its simplicity. |
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Service Type: E-LAN
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MEF 6.1: An E-LAN is a multipoint to multipoint service that connects a number of UNIs (2 or more) providing full mesh connectivity for those sites. Each UNI can communicate with any other UNI that is connected to that Ethernet service.
E-LANs are used to create:- Multipoint L2 VPNs Transparent LAN services Layer 2 VPNs (L2VPN) Foundation for IPTV and Multicast networks |
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Service Type: E-Tree
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MEF 6.1: An E-Tree is a rooted multipoint service that connects a number of UNIs
providing sites with hub and spoke multipoint connectivity. Each UNI is designated as either 'root' or 'leaf'. A root UNI can communicate with any leaf UNI, while a leaf UNI can communicate only with a root UNI. E-Trees provide the separation between UNIs required to deliver a single service instance in which different customers (each having a leaf UNI) connect to an ISP which has one or more root UNIs. Having more than one root UNI is useful for load sharing and resiliency schemes. E-Trees are used to create:- Multicast delivery services Internet access Mobile backhaul services Telemetry services |
