Optional) Configuring Ais For An Lsp - Huawei NetEngine80E Configuration Manual - Reliability

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
The procedure for configuring one-way and two-way DM is as follows:
All the steps must be performed on the MEP and RMEP unless otherwise specified.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
mpls-tp meg
The MEG view is displayed.
Step 3 Choose one of the following sub-procedures as needed.
l Configure one-way DM.
l Configure two-way DM.
----End

10.2.7 (Optional) Configuring AIS for an LSP

If faults occur on the under-layer link between the ingress LSR and egress LSR of an LSP, an
AIS-capable device on the LSP will periodically send AIS PDUs in the opposite direction to
other devices on the LSP to prevent upper-layer devices from generating alarms.
Context
On a traditional transport network, a circuit such as a T1 line usually spans multiple switching
devices. If a device or a link on the circuit becomes faulty, an alarm suppression message will
be generated immediately on the fault point and protection switching will be triggered. The
NE80E/40E uses AIS to suppress alarms on an MPLS-TP network.
The AIS mechanism works as follows:
l
Issue 02 (2011-09-10)
NOTE
meg-name
Run the delay-measure one-way
*
value ] command to enable one-way DM.
Run the following commands to query the one-way DM statistics in different situations:
– If the delay-measure one-way
the direction from the source end to the destination end. To view DM statistics, you must
run the display mpls-tp oam
command on the RMEP.
– If the delay-measure one-way
direction from the destination end to the source end. To view one-way DM statistics, you
can run the display mpls-tp oam
way command on the local MEP.
Run the delay-measure two-way
value | two-time-stamp ]
If the server layer where the MEG resides detects a fault, it will report an alarm to the NMS
and then inform the client layer of the fault. This can prevent higher-level network devices
from sending the same alarm to the NMS.
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[ interval interval-value | count count-value | exp exp-
command is run on the local MEP, DM is performed in
meg meg-name statistic-type delay-measure one-way
command is run on the RMEP, DM is performed in the
meg meg-name statistic-type delay-measure one-
[ interval interval-value | count count-value | exp exp-
*
command to enable two-way DM.
10 MPLS-TP OAM Configuration
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