Figure 3-14 Maintenance Domain - Zte ZXR10 5900E Product Description

ZXR10 5900E Product Description
Main basis of CFM that current switches support: IEEE 802.1ag implementation.
To manage and maintain the network, network administrator plans network service and
network layers by dividing the whole network into multiple Management Domains (MD).
A single domain is shown in the following Figure.
The domain defines a series of ports at edge device and internal device. The gray points
at the edge device are service ports connecting to device outside the domain. They are
defined as Maintenance End Point (MEP). There are also some black ports (including
those at the device inside the domain) which are ports connecting devices inside the
domain. They are defined as Maintenance Intermediate Point (MIP). Domain
management is implemented by the defined MEP and MIP.

Figure 3-14 Maintenance domain

Maintenance Domain
As shown in the Figure, a network can be divided into user domain, provider domain and
operator domain. Each domain is designated with a level from 0 to 7. The level for
domain determines the inclusion relations. Domain with higher level can contain domain
with lower level; not vice versa. Domains with the same level cannot contain each other.
Thus the domain with the largest coverage has the highest level. Domain inclusive
relations could be tangent (internally or externally) and inclusive, but not intersecting.
ZTE Confidential Proprietary 59