Commissioning Optical Power of OTU Board

The overload of the APD receiver laser is -9 dBm. If the input optical power is higher, the APD laser may be damaged. Therefore, it is recommended that you insert the fiber loosely from the input optical port of the OTU during commissioning. After commissioning, make sure the input optical power is lower than the receiver overload before you insert the fiber.

Forcing the OTU Board to Emit Light

This section describes how to force the OTU board to emit light.

Prerequisites

The NE must be created on the U2000.

Tools, Equipment, and Materials

U2000

Background Information

The signals accessed on the client side or the WDM side should be service signals in actual transmission, or the optical signals generated by forcing the board to emit light.

The WDM side of the OTU board by default is forced to emit light. If it does not emit light, refer to the following procedure to query whether the board is forced to emit light. If the board is not forced to emit light, set the board to emit light.

Precautions

• The prerequisite for commissioning the ESC (Electric Supervisory Channel) is that the OTU is forced to emit light.

Procedure

1. In the NE Explorer window, select the desired OTU and choose Configuration > WDM Interface from the Function Tree.
2. Select Channel from the drop-down list.
3. Optional: Click the Basic Attributes tab. Set the Automatic Laser Shutdown of the optical port on the WDM side of the OTU to DISABLE.
   Only the LWX2, LWXD and LWXS can set Automatic Laser Shutdown of the WDM side.
4. Set the Laser Status of the optical port on the WDM side of the OTU to OPEN.
5. Click Apply.

Adjusting the Input Optical Power of OTU Board

ools, Equipment, and Materials

Optical power meter

Precautions

Before the equipment is powered on, verify that the fixed optical attenuator is configured according to the configuration rules. Verify the input optical power of the OTU (including the WDM side and client side) is lower than the receiver overload to avoid damage to the optical module during commissioning. Note that the overload of the APD receiver laser is only -9 dBm. Adjust the input optical power at the IN port on the WDM side of the OTU to ensure that the input optical power is within the optimal range: from -14 dBm to -25 dBm.For the specifications about the sensitivity and overload point of the OTU board.

Commissioning Requirements

• Adjust the input optical power at the IN port on the WDM side of the OTU to ensure that the input optical power is within the optimal range: from -12 dBm to -5 dBm; adjust the input optical power at the RXn port on the client side of the OTU to ensure that the input optical power is within the optimal range: from (sensitivity +3) dBm to (overload point -2) dBm.
• Confirm the optical preamplifier on the WDM side of the OTU at the receive end has output the standard optical power of single wavelength. When this occurs, the input optical power on the WDM side can be adjusted based on the actual optical power by adding, changing or removing the fixed optical attenuators.
• After commissioning, insert a fiber into the input optical port on the OTU when the input optical power reaches a normal state.

There is no any resource in U2000 report server because of no NE in User domain

Issue Description

Customer M complains that U2000V1R2C01SPC100 report server can not generate any report, because they cannot select any resource when they generate a report, the resource page is empty.

Alarm Information

Null

Handling Process

1. Check the performance instance in U2000 performance Monitoring Management, it is normal, performance instances are there.
2. Check the report user right in U2000 administration > NMS Security > NMS User Management, in the Domain page, I find there are not any NE in it.
3. Add NEs in the Domain for report user, login the U2000 report server, the resource come, and problem resolve.

Root Cause

1. Do not create performance instance in U2000 server
2. Report user do not have enough right to manage the NE

Suggestions

Null

Huawei MA5800 Configuring Alarms

Alarm management on Huawei MA5800 includes the following functions: alarm record, and alarm setting. These functions help you to maintain the device and ensure that the device works efficiently.

Context

An alarm refers to the notification of the system after a fault is detected. After an alarm is
generated, the system broadcasts the alarm to the terminals, mainly including the NMS and
command line interface (CLI) terminals.
Alarms are classified into fault alarm and recovery alarm. After a fault alarm is generated at a
certain time, the fault alarm lasts till the fault is rectified to clear the alarm.
You can modify the alarm settings according to your requirements. The settings are alarm
severity, alarm output mode through the CLI.
When managing alarms on the GUI through the NMS, you can set filtering criteria to mask
unimportant alarms and events. Such filtering function facilitates the focus of the important

alarms and eliminates the load of the NMS.

Procedure

Clear alarms.
You can run the alarm active clear command to clear the alarms that are not recovered
in the system.
– When an active alarm lasts a long time, you can run this command to clear the
alarm.
– Before clearing an alarm, you can run the display alarm active command to query
the currently active alarms.
l Configure alarm level.
Run the alarm alarmlevel command to configure the alarm level.
– Alarm levels are critical, major, minor, and warning.
– Parameter default indicates restoring the alarm level to the default setting.
– You can run the display alarm list command to query the alarm level.
– The system specifies the default (also recommended) alarm level for each alarm.

Use the default alarm level unless otherwise required.
Configure alarm jitter-proof.
Run the alarm jitter-proof command to configure the alarm jitter-proof function and the
jitter-proof period.
– To prevent a fault alarm and its recovery alarm from being displayed frequently,
you can enable the alarm jitter-proof function to filter alarms in the system.
– After the alarm jitter-proof function is enabled, the alarm in the system is not
reported to the NMS immediately but is reported to the NMS after an alarm jitterproof
period.
– If an alarm is recovered in an alarm jitter-proof period, the alarm is not reported to
the NMS.
– You can run the display alarm jitter-proof command to check whether the alarm
jitter-proof function is enabled and whether the alarm jitter-proof period is set.
– By default, the alarm jitter-proof function is disabled. You can determine whether to
enable the function according to the running of the device.
l Set or shield the output of alarms.
Run the (undo) alarm output command to set or shield the output of alarms to the CLI
terminal.
– Setting the output mode of alarms does not affect the generating of alarms. The
alarms generated by the system are still recorded. You can run the display alarm
history command to query the alarms that are shielded.
– When the new output mode of an alarm conflicts with the previous mode, the new
output mode takes effect.
– The output mode of the recovery alarm is the same as the output mode of the fault
alarm. When the output mode of the fault alarm is set, the system automatically
synchronizes the output mode of its recovery alarm. The reverse is also applicable.
Filter alarms reporting to NMS.
Run the trap filter alarm condition command to filter alarms that the device reports to
the NMS through traps.
The filtering criteria can be alarm ID, alarm severity, alarm type, subrack ID, subrack ID/
slot ID, subrack ID/slot ID/port ID, VLAN interface, and NE.
To reduce alarms and avoid alarm storms, the system does not send alarms of some
Huawei ONT to the NMS. To query the filtering criteria of alarms and events in the system, run
the display trap filter command.
l Query alarm configuration.
Run the display alarm configuration command to query the alarm configuration
according to the alarm ID. The alarm configuration that you can query includes the alarm
ID, alarm name, alarm class, alarm type, alarm level, default alarm level, number of
parameters, CLI output flag, conversion flag, and detailed alarm description.
(Optional) Configure alarm policy for ONT.
In Huawei FTTH scenarios, you can configure the ONT alarm policy profile to configure alarms
for different service policies.

Why I failed to Enable the CAU Function of the U2000 on my Computer?

Issue Description

I bought a Huawei MA5683T configure with one GPFD  C+, when I install U2000 server on computer, the U2000 client is installed remotely by using the computer according to the installation guide. After http://server IP address:8080/cau is entered in the address box, the web page cannot be displayed. The web page for client installation cannot be displayed on the local server, either. 

Alarm Information

The page cannot be displayed. 

The page you are looking for is currently unavailable. 

Handling Process

Check and confirm that the following conditions are met according to the installation guide. 

The default browser of Windows OS is Internet Explorer 6.0 or 7.0, and the proxy server is not set.

2. The U2000 server and CAU process are started up in the normal state. 

The U2000 server successfully communicates with the U2000 client and the bidirectional server-client ping operation is successful.

4. The port (port ID: 8080) on the U2000 server for installing the U2000 client in the network mode is enabled.

5. If the U2000 client has been installed in the network mode previously, uninstall the U2000 client and ensure that the .cau file in the %USERPROFILE% directory (such as C:\Documents and Settings\Administrator) is deleted. 

6. In addition to meeting the requirement for installation partition sizes, at least 900 MB space is available in disk C for data buffer. 

The CAU function, however, is still disabled. With the assistance of R&D engineers, it is confirmed that the CAU function is disabled by default when the U2000 is installed on a computer with smaller than 3 GB memory. Under this condition, the CAU function can be enabled only manually. To manually enable the CAU function, copy all files in the U2000\common\Tomcat\webapps\not_support\cau directory to the U2000\common\Tomcat\webapps\cau directory without restarting the system. Then, the CAU function is enabled immediately. 

Root Cause

The possible cause is that the port is being used or the CAU function is disabled. 

Suggestions

It is recommended that the limitation should be described in the installation guide. Engineers will encounter this problem after installing the U2000 because the computer memory of Huawei is smaller than 2 GB. 

The Service port Cannot Display Normally When Double-clicking the MA5600 Network Element to Enter the Board

Issue Description

Q: 

In the NMS topology, the serviceport cannot display normally when double-clicking the network element to enter the board.

Alarm Information

Null

Handling Process

A:

The status of Huawei MA5600 serviceport is the status of the traffic. Only when the single end PVC, the state machine of the traffic and the ADSL port are all  in Up status, the status of the serviceport is Up. Click the Synchronize Network Element in the Serviceport in the Serviceport Plane.

If the board is in position, generally the status of the single end PVC is Up.

The status of the ADSL port is Up after connecting to the modem.

The status of the service port is Up, indicating the normal condition.

Root Cause

1. The MA5600 database is full and the data space and the log space are normal.

2. MA5600 process is abnormal and no boot record. 

3. Other ports of Huawei MA5600 are normal. Only the service port is abnormal.

4. The MA5600 version is matched with the NMS version.

Suggestions

Null