Huawei NetEngine80E Configuration Manual - Reliability page 736

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
Y.1731 Features Supported by the NE80E/40E
This section describes the functions and deployment scenarios of Y.1731 features that the
NE80E/40E supports.
The Y.1731 features that the NE80E/40E supports include single-ended frame loss
measurement, dual-ended frame loss measurement, one-way frame delay measurement, two-
way frame delay measurement, single-ended synthetic loss measurement, AIS, and multicast
MAC ping applied to Virtual Private LAN Service (VPLS), Virtual Leased Line (VLL)
networking.
Issue 02 (2014-09-30)
As shown in Figure
and MEP3. MEP1 initiates a multicast MAC ping probe. The probe process is as follows:
– In the case where the link between MEP1 and MEP2 or between MEP1 and MEP3
is normal:
1. MEP1 of the local device sends a multicast LBM.
2. After receiving the multicast LBM, MEP2 and MEP3 reply with an LBR.
3. The local device receives the LBRs and displays the contents of the LBRs.
– In the case where the link between MEP1 and MEP2 or between MEP1 and MEP3
is faulty:
1. MEP1 of the local device sends a multicast LBM.
2. MEP1 does not receive any LBR from the remote MEPs within a specified
timeout period. The output of the related command shows that a fault occurs
on the link between MEP1 and MEP2 or the link between MEP1 and MEP3.
– Remote MEP discovery
As shown in Figure
The IDs and MAC addresses of the remote MEPs may be unknown. Therefore, multicast
MAC ping can be performed to discover the remote MEPs of MEP1. The process of
multicast MAC ping is as follows:
1. MEP1 of the local device sends a multicast LBM.
2. After receiving the multicast LBM, MEP2 and MEP3 reply with an LBR.
3. The local device receives the LBRs and displays the contents of the LBRs. The
LBRs contain the MAC addresses of the remote MEPs, MEP IDs, and delay.
Table 8-18 lists the functions and deployment scenarios of these features.
NOTE
l Only Outward MEP is supported in no-bind networking. There is no need to binding a service to MA.
l Only two-way frame delay measurement, one-way frame delay measurement, or Alarm Indication
Signal (AIS) is supported in PBB VPLS networking.
l Loss measurement or delay measurement takes effect only on LDP LSPs and TE LSPs between PEs
on public networks.
l Loss measurement cannot be performed on an Eth-Trunk interface of a PW between PEs.
NOTE
Before configuring a unidirectional delay, synchronize the clock frequency between the two ends. For
details about frequency synchronization configuration, see the chapter "1588v2 Configuration" in
Configuration Guide-System Management.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8-46, MEP1 on Router A has two remote MEPs, namely, MEP2
8-46, remote MEPs need to be configured for MEP1 of Router A.
8 Ethernet OAM Configuration
719