Chapter 4: Feature Description
Ethernet Features
Ethernet Virtual Private Tree Service
In order to access several applications and services from well-defined access points (Root), the
UNIs are attached to the service in a Rooted Multipoint connection. Customer UNIs can also
support other services, such as EVPL and EVP-LAN services. An EVP-Tree service is used in such
cases. Bundling can be used on the UNIs in the Rooted Multipoint EVC, but it is not mandatory. As
such, CE-VLAN tag preservation and tunneling of certain Layer 2 Control Protocols may or may not
be provided. EVP-Tree enables each UNI to support multiple services. A good example would be a
customer that has an EVP-LAN service providing data connectivity among three UNIs, while using
an EVP-Tree service to provide video broadcast from a video hub location. The following figure
provides an example of a Virtual Private Tree service.
Figure 35 Ethernet Virtual Private Tree Example
PTP 820S enables network connectivity for Mobile Backhaul cellular infrastructure, fixed networks,
private networks and enterprises.
Mobile Backhaul refers to the network between the Base Station sites and the Network Controller
or Gateway sites for all generations of mobile technologies. Mobile equipment and networks with
ETH service layer functions can support MEF Carrier Ethernet services using the service attributes
defined by the MEF.
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