Figure 26 Maintenance Domain Figure - Zte ZXR10 5900 Series User Manual

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IGURE AINTENANCE
As shown in Figure 27, a network can be divided into user domain,
provider domain and operator domain. Each established domain
will be designated a level, there are 0-7 levels in total. The do-
main level will decide domain inclusion relationship. The domain
with large level can include the domain with low level, whereas
it doesn't work. The domains with same level can't include each
other. That is, the domain with the largest range has the highest
level. Domain inclusion relationship can not be intersection but
tangency(internally-tangent or externally-tangent) and inclusion.
Connectivity Fault Management (CFM) is useful to Virtual Bridged
Local Area Networks for detecting, isolating, and reporting connec-
tivity faults. It is aimed primarily at Provider Bridged Networks,
but is useful also for C-VLAN networks. IEEE 802.1ag standard
defines the following mechanism:
1. Configure multiple embedded MDs by a bridge network. Each
domain can be managed by different management organiza-
tion.
2. Configure MAMaintenance Association ) identified by a lone MD
in any designated bridge and a group of VLANs.
3. Protocol, workflow and CFM protocol packet format for detect-
ing, isolating, and reporting connectivity faults.
4. Configure and manage configuration ability of MP (mainte-
nance point) in MA. MP is used for generating CFM packet.
5. Demand MPs to implement specific fault isolating operation and
inspect result.
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Chapter 11 Ethernet OAM Configuration
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