Juniper ACX1000 Configuration Manual page 1180

ACX Series Universal Access Router Configuration Guide
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NOTE: Starting Junos OS Release 16.1, the Ethernet loss measurement
(ETH-LM) results are inaccurate when connectivity fault management (CFM)
and performance monitoring (PM) PDUs received locally at a maintenance
endpoint (MEP) as classified as belonging to the yellow class or a packet
loss priority (PLP) of medium-high. This problem of incorrect results is specific
to Ethernet loss measurement for CFM sessions of down MEPs. The Ethernet
loss measurement statistics are inaccurate in the following scenarios:
Ethernet loss measurement is working on a CFM session for a MEP in down
state
CFM PDUs received on the logical interface of the down MEP are classified
by the classifier as yellow or medium-high PLP
A packet is identified as yellow when the input classifier marks the PLP as
medium-high.
The problem of discrepancies with Ethernet loss measurement results is not
observed when you configure Ethernet loss measurement in colorless mode.
To avoid this problem of inaccurate loss measurement results, provision all
local CFM PDUs as green or with the PLP as high.
NOTE: Starting with Junos OS Release 16.1, performance monitoring for
connectivity fault management (by including the
statement and its substatements at the
connectivity-fault-management]
network-to-network (NNI) or egress interface is an aggregated Ethernet
interface with member links on DPCs.
Release Description
16.1 Starting Junos OS Release 16.1, the Ethernet loss measurement (ETH-LM) results are
inaccurate when connectivity fault management (CFM) and performance monitoring
(PM) PDUs received locally at a maintenance endpoint (MEP) as classified as
belonging to the yellow class or a packet loss priority (PLP) of medium-high.
16.1 Starting with Junos OS Release 16.1, performance monitoring for connectivity fault
management (by including the
substatements at the
connectivity-fault-management]
network-to-network (NNI) or egress interface is an aggregated Ethernet interface
with member links on DPCs.
Managing Continuity Measurement Statistics
On-Demand Mode for SLA Measurement on page 1125
Proactive Mode for SLA Measurement on page 1123
[edit protocols oam ethernet
hierarchy level) is not supported when the
performance-monitoring
[edit protocols oam ethernet
hierarchy level) is not supported when the
Copyright © 2017, Juniper Networks, Inc.
performance-monitoring
statement and its