Huawei NetEngine80E Configuration Manual - Reliability page 400

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
Feature
Maintenance Point
l
Issue 02 (2011-09-10)
IEEE 802.1ag Draft
7
Supported
Basic concepts
– MD
A Maintenance Domain (MD) refers to the network or a part of the network where CFM
is performed. Devices in an MD are managed by a single ISP.
– Default MD
According to IEEE Standard 802.1ag-2007, each device can be configured with one
default MD. The default MD must be of a higher level than all MDs to which MEPs
configured on the local device belong. In addition, the default MD must be of the same
level as the high-level MD. The default MD transmits high-level CCMs and creates
MIPs to reply LTR packets.
– MA
A Maintenance Association (MA) is part of an MD. An MD can be divided into one or
multiple MAs. On the NE80E/40E, each MA is associated with a VLAN or a VSI.
Ethernet CFM maintains the connectivity of each MA separately.
– MEP
A Maintenance association End Point (MEP) is an edge point within an MA.
For the devices on the network enabled with Ethernet CFM, their MEPs are called local
MEPs. For the other devices in the same MA, their MEPs are called the Remote
Maintenance association End Points (RMEPs).
CAUTION
l One Trunk interface can be configured with only one MEP, regardless of how many
sub-interfaces the Trunk interface has.
l The system does not support hot swapping of boards.
– MIP
A Maintenance association Intermediate Point (MIP) is an intermediate point within an
MA.
According to IEEE 802.1ag Draft 7, MIPs reside on the interfaces of the device and are
automatically generated on the basis of the interface.
According to IEEE Standard 802.1ag-2007, MIPs are automatically generated on the
basis of the MD or default MD.
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8 Ethernet OAM Configuration
IEEE Standard
802.1ag-2007
Supported
Remarks
The features
and
configurations
supported by
802.1ag Draft 7
and Standard
802.1ag-2007
are the same.
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