E-Tree Sample Clauses

E-Tree. 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 E-LAN services are appropriate when all UNIs can generate traffic towards any other UNI and all UNIs belong to the same administrative domain - in other words when traffic separation between different organizations sharing the service is not required.