The Management plane
provides the functional elements that support Fault, Configuration (including flow and/
or connection configuration), Account, Performance, and Security (FCAPS) functions, as
well as any related Operations, Administration, and Maintenance (OAM) tools.
The three operational planes are generally well defined for the TRAN layer (numerous
standards bodies have addressed it, and these are identified in Part II). For the ETH
layer, the effort was, for the most part (except in the data plane), begun only recently.
As will become evident in the rest of the book, the control and management functions of
the TRAN layer are often employed in delivering Carrier Ethernet currently.
Figure 2.5 The basic Service Provider model for delivering Ethernet services (Source: MEF)
UNI
Client
End-to-End Ethernet Flow
Ethernet Virtual Connection (EVC)
T T
Metro
Ethernet
Network
(MEN)
UNI
Client
Subscriber Site A Subscriber Site B
UNI UNI
UNI
Network
Transport Services Layer
(e.g., IEEE 802.1,
SONET/SDH, MPLS)
Ethernet Services Layer
(Ethernet Service PDU)
Application Services Layer
(e.g., IP, MPLS, PDH, etc.)
Data Plane
Control Plane
Management Plane
UNI
Network
Carrier Ethernet 59
Ethernet services delivered over the MEN invariably have two key service attributes
associated with them: the User Network Interface (UNI) and the Ethernet Virtual
Connection (EVC).
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