Huawei NetEngine80E Configuration Manual - Reliability page 682

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
Applicable Environment
MPLS-TP has been widely used on transport networks. Since traditional transport networks,
such as SDH and OTN networks, set high benchmarks for reliability and maintenance, MPLS-
TP needs to provide powerful OAM capabilities.
MPLS-TP OAM can detect faults on bidirectional LSPs and collect performance statistics. On
the LSP shown in
MEP (RMEP), and the transit LERs are MIPs. MPLS-TP OAM runs on the MEPs and MIPs
and provide the functions listed in
Figure 10-3 Networking diagram for a bidirectional LSP
Ingress LER
Table 10-3 MPLS-TP OAM functions supported by the NE80E/40E
Function
Fault management
Performance statistics
Issue 02 (2011-09-10)
Figure 10-3, the ingress LER is the local MEP, the egress LER is the remote
Table
Transit LER
LSP
Application
Scenario
Connectivity check
Alarm suppression
Packet loss statistics LM: checks statistics about packets
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10 MPLS-TP OAM Configuration
10-3.
Transit LER
Maintenance End Point
Maintenance Intermediate Point
Configuration Procedure
CC: checks the continuous connectivity
between the ingress LER and egress LER
of a bidirectional LSP. If a link fault is
detected, an alarm will be generated and the
link status will change to Down.
LB: checks the continuous connectivity
between the ingress LER and egress LER
of a bidirectional LSP based on
requirements. Check results will be directly
displayed on a terminal.
CV: checks whether CC configurations on
the ingress LER and egress LER of a
bidirectional LSP are consistent and will
report alarms if any inconsistency is
detected.
AIS: sends AISs to the upper-layer devices
if any LSP faults are detected.
dropped between the ingress LER and
egress LER of a bidirectional LSP.
Egress LER
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