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Function
Function Description
Principles
Single-ended
Synthetic Loss
Measurement
(SLM)
Collects frame loss statistics
on point-to-multipoint or
multipoint-to-multipoint
links to monitor link
quality.
Single-ended synthetic frame LM is used to
collect accurate frame loss statistics on
point-to-multipoint links.
8.4.2 Configuring Y.1731 Functions in VLL Networking
This section describes how to configure Y.1731 functions including single-ended frame loss
measurement, dual-ended frame loss measurement, one-way frame delay measurement, two-
way frame delay measurement, AIS, and multicast MAC ping in VLL networking.
Before You Start
Before configuring Y.1731 functions on in VLL networking, familiarize yourself with the usage
scenario, complete the pre-configuration tasks, and obtain the data required for the configuration.
Applicable Environment
The VLL technology implements point-to-point VPN networking. As shown in
the PEs are connected through a PW. To take accurate statistics about frame loss on one end of
a PW between PE1 and PE2 in VLL networking, the following performance monitoring
functions defined by Y.1731 can be used to monitor links:
l
Single-ended frame loss measurement
l
Dual-ended frame loss measurement
l
One-way frame delay measurement
l
Two-way frame delay measurement
l
Single-ended synthetic frame loss measurement
l
AIS
l
Multicast MAC ping
Y.1731 functions implemented on the PW side include Y.1731 functions implemented by an
interface-based MEP and a PW-based MEP. Y.1731 functions implemented by a PW-based
MEP supports only one-way frame DM, two-way frame DM, single-ended SLM, and multicast
MAC ping.
Figure 8-47
Networking diagram for configuring Y.1731 functions in VLL networking
CE1
PE1
PE2
CE2
VLL
User
Network
User
Network
MEP
Y.1731
Y.1731
Y.1731
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
8 Ethernet OAM Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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