Figure 32 Ethernet Network Maintenance Domain Inclusion - Zte ZXR10 8900 Series User Manual

ZXR10 8900 Series User Manual (Ethernet Switching Volume)
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with lower-level, whereas it doesn't work. Domains with the same
level cannot include each other, that is, the domain with the largest
range has the highest level. Domain inclusion relationship can be
tangency (internally-tangent or externally-tangent) or inclusion,
but cannot be intersection.
Connectivity Fault Management (CFM) is useful to Virtual Bridged
Local Area Networks for detecting, isolating, and reporting connec-
tivity faults. It mainly targets at carrier network, but also functions
on user network (C-VLAN). IEEE 802.1ag standard defines the fol-
lowing mechanisms:
1. Configure multiple embedded MDs by a bridge network. Each
domain can be managed by a different management organiza-
tion.
2. Configure one separate MD in the specified bridge and a group
of VLANs to identify MA (Maintenance Association).
3. Protocol, procedures and CFM packet format used to check and
isolate faults and output connectivity fault report.
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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ETWORK AINTENANCE
D I D
OMAIN NCLUSION IAGRAM