![Huawei Quidway NetEngine40E Configuration Manual - Reliability Download Page 939](http://html.mh-extra.com/html/huawei/quidway-netengine40e/quidway-netengine40e_configuration-manual-reliability_169453939.webp)
NOTE
If the network speed is rather slow,
timeout-value
(a parameter that specifies the period for waiting for a response
packet) can be set to a larger value when the
ping meg
command is configured.
----End
9.2.5 (Optional) Configuring Frame DM for Sections on an LSP
This section describes how to configure one-way and two-way frame delay measurement (DM)
to collect reliability statistics about sections on a label switched path (LSP).
Context
Frame DM is a performance monitoring function provided by multiprotocol label switching
transport profile (MPLS-TP). Delay variation (jitter) can be calculated based on delay
information. Two frame DM modes are supported:
l
One-way frame DM: In a point-to-point maintenance entity (ME), a maintenance entity
group end point (MEP) sends DM packets to its remote MEP (RMEP) to perform one-way
frame DM.
NOTE
If the clocks of the two MEPs are synchronous, both one-way and two-way frame DM can be performed.
If the clocks of the two MEPs are asynchronous, only two-way frame DM can be performed.
l
Two-way frame DM: In a point-to-point ME, a MEP sends Delay Measurement Messages
(DMMs) to its RMEP and receives Delay Measurement Replies (DMRs) from the RMEP
to perform two-way frame DM.
The differences between one-way and two-way frame DM functions are listed in
Table 9-4
Differences between one-way and two-way frame DM functions
Item
One-way Frame DM
Two-way Frame DM
Statistic
s display
Running the
display mpls-tp oam
meg
meg-name
statistic-type
delay-
measure
one-way
command on the
RMEP displays statistics about one-
way delay and delay jitters on a MEP.
Statistics can be displayed by running
either of the following commands on a
MEP:
l
Running the
delay-measure two-way
[
interval
interval-value
|
count
count-
value
|
exp
exp-value
|
two-time-
stamp
]
*
command displays statistics
about two-way on-demand delay and
delay jitters.
l
Running the
display mpls-tp oam
meg
meg-name
statistic-type
delay-
measure
two-way
command displays
statistics about two-way delay and
delay jitters.
Applicat
ion
scenario
On-demand monitoring
Proactive monitoring
On-demand monitoring
Proactive monitoring
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
9 MPLS-TP OAM Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
922