Restrictions For Ethernet Frame Delay Measurement - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide

Restrictions for Ethernet Frame Delay Measurement

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The following restrictions apply to the Ethernet frame delay measurement feature:
Ethernet frame delay measurements can be triggered only when the distributed periodic
packet management daemon (
the
delegate-server-processing
connectivity-fault-management performance-monitoring
information about this limitation, see Guidelines for Configuring Routers to Support an
ETH-DM Session and Ensuring That Distributed ppm Is Not Disabled.
You can monitor only one session at a time to the same remote MEP or MAC address.
For more information about starting an ETH-DM session, see Starting an ETH-DM
Session.
ETH-DM statistics are collected at only one of the two peer routers in the ETH-DM
session. For a one-way ETH-DM session, you can display frame ETH-DM statistics at
the receiver MEP only, using ETH-DM-specific
session, you can display frame delay statistics at the initiator MEP only, using the same
ETH-DM-specific commands. For more information, see Managing ETH-DM
show
Statistics and ETH-DM Frame Counts.
ETH-DM frame counts are collected at both MEPs and are stored in the respective
CFM databases.
Accuracy of frame delay statistics is compromised when the system is changing (such
as from reconfiguration). We recommend performing Ethernet frame delay
measurements on a stable system.
One-way Ethernet frame delay measurement is not supported.
Understanding Ethernet OAM Link Fault Management for ACX Series Routers on page 1112
Guidelines for Configuring Routers to Support an ETH-DM Session
Guidelines for Starting an ETH-DM Session
Guidelines for Managing ETH-DM Statistics and ETH-DM Frame Counts
Ethernet Frame Delay Measurements Overview on page 1117
Ethernet Frame Loss Measurement Overview on page 1121
Proactive Mode for SLA Measurement on page 1123
On-Demand Mode for SLA Measurement on page 1125
Configuring MEP Interfaces to Support Delay Measurement on page 1125
Ethernet OAM Connectivity Fault Management on page 1126
Ethernet Interfaces Feature Guide for Routing Devices
) is enabled. To enable distributed
ppm
CLI statement at the [
edit protocols oam ethernet
] hierarchy. For more
commands. For a two-way ETH-DM
show
Copyright © 2017, Juniper Networks, Inc.
, include
ppm