PRELIMINARY
Technical Description
Metro
Ethernet
Network
User network interface
UNI
User network
interface
UNI
Customer
Edge
Customer
Edge
12530
Figure 6 Ethernet Service Model
Based on Ethernet Virtual Connections (EVCs), the following service types
are supported:
• Point-to-Point EVC:
0
Ethernet Private Line (EPL) service
0
Ethernet Virtual Private Line (EVPL) service
•
Multipoint-to-Multipoint EVC:
0
Ethernet Private LAN (EPLAN) service
0
Ethernet Virtual Private LAN (EVPLAN) service
The LAN port can be used as a UNI, supporting up to 16 EVCs.
4.3.1 Ethernet Virtual Connection
An EVC is an instance of an association of two or more UNIs. It performs
two functions:
• Connects two or more customer sites (UNIs) enabling the transfer of
Ethernet service frames between them. The rules under which a service
frame is delivered to the destination UNI are specific to the particular
service definition.
• Prevents data transfer between customer sites that are not part of the
same EVC.
Two types of EVCs are supported:
•
Point-to-Point EVC (E-Line)
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1/22102-HRA 901 17/9 Uen PU1 | 2016-07-04
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