Adding a Board Offline

This topic describes how to add a board to an idle slot that is consistent with the board actually planned beforehand to ensure that the board runs immediately the board is installed in the slot.
Prerequisites
The slot to which a board is added must be idle.
Context
– The boards other than the control board can be added offline.
– After a board is added offline, the board status is displayed as Failed. The board status becomes normal only when a board of the same type as the board added offline is installed in the slot. If a board of a different type is installed, the board resets repeatedly due to the board type mismatch.
Procedure
Step 1 Run the board add command to add a board offline.
NOTE
– The shelf ID and the slot ID of the board added offline must be the same as the actual position. Otherwise, when the board is installed, the board status cannot be changed to normal.
– The type of the board added offline must be the same as the type of the board installed. Otherwise, when the board is installed, the board status cannot be changed to normal.

Step 2 Run the display board frameid [ /slotid ] command to query the type of the added board.
—-End

Result
The type of the added board is the same as the board type that is planned. When a board is installed in the slot in which the board is added, the board status is displayed as Normal.

Example
To add a service board GPBD offline in slot 0/2, do as follows:

huawei(config)#board add 0/2 h802gpbd
0 frame 2 slot board added successfully
huawei(config)#display board 0/2
—————————————
Board Name : H802GPBD
Board Status : Failed
—————————————

Confirming a Board
This topic describes how to confirm a board after the board installed in an idle slot is automatically discovered. This ensures that the auto-discovered board runs in the normal state.
Prerequisites
A board must be installed in an idle slot or all the boards in the shelf must be installed. After that, the system automatically identifies the board type, and the board status is Auto_find.
Procedure
Step 1 Run the board confirm command to confirm an Auto_find board.
NOTE
– To confirm only one board, run the board confirm frameid/slotid command.
– To confirm all the boards in a shelf, run the board confirm frameid command.

Step 2 Run the display board frameid [ /slotid ] command to query the board status.
—-End

To confirm the service board in slot 0/2, do as follows:
huawei(config)#board confirm 0/2
0 frame 2 slot board confirms successfully

Checking the Board Status
This topic describes how to check whether the board works in the normal state.
Procedure
Step 1 Run the display board frameid command to query the status of all the boards.

Result
All the boards work in the normal state. That is, all of the service board status is displayed as Normal, the active control board status is displayed as Active_normal, and the standby control board status is displayed as Standby_normal.
Example
To query the information about all the boards of shelf 0, do as follows:
huawei(config)#display board 0

Checking the Status of the Upstream Port
This topic describes how to check whether the upstream port is in the normal state.
Procedure
Step 1 Follow the steps below to check the status of the upstream port.
– If the control board is adopted for upstream transmission, do as follows:
1. For the MCU control board, run the interface mcu command to enter the MCU mode. For other control boards, run the interface scu command to enter the SCU mode.
2. Run the display port state all command to check whether the upstream port is in the normal state.
– If the upstream board is adopted for upstream transmission, do as follows:
1. Run the interface giu command to enter the GIU mode.
2. Run the display port state all command to check whether the upstream port is in thenormal state.

Result
The upstream port is in the normal state. That is, the upstream port is in the active state and the link is in the online state. If the optical port is adopted for upstream transmission, Optic Status is displayed as normal

Checking the Status of the Service Port
This topic describes how to check whether the service port is in the normal state.
Prerequisites
NOTE
The MA5600T/MA5603T/MA5608T provides various service ports. The following only describes how to check the status of an ADSL2+ port and a GPON port.
Procedure
Step 1 Follow the steps below to check the status of the service port.
– If the user port is an ADSL2+ port:
1. Run the interface adsl command to enter the ADSL mode.
2. Run the display port state command to check whether the service port is in the normal state.
– If the user port is a GPON port:
1. Run the interface gpon command to enter the GPON mode.
2. Run the display port state command to check whether the service port is in the normal
state
All the service ports are in the normal state. That is :
– If the user port is an ADSL2+ port: Status is displayed as Activated.
– If the user port is a GPON port: Status is displayed as Activated, and Laser state is
displayed as Normal.

Enabling the ONT Automatic Discovery function:
After the ONT automatic discovery function is enabled, online ONTs can be automatically displayed on the OLT.
Procedure
Step 1 Run the port portid ont-auto-find command to enable the auto discovery function of the ONT.
Step 2 Run the port fec(gpon)command to enable the forward error correction (FEC) function.
NOTE Only GPON supports this operation.
Result
Run the display port info(gpon) command to query the configuration.
huawei(config-if-gpon-0/3)#display port info
{ portid<0,7> }:0
Command:
display port info 0
——————————————————–
F/S/P 0/3/0
Min distance(km) 0
Max distance(km) 20
Left guaranteed bandwidth(kbps) 1240576
Number of T-CONTs 0
Autofind Enable
FEC check Enable
Laser switch On
ONT encryption key switching interval(m) Disable
——————————————————–

Testing the Optical Power of an Optical Port
This topic describes how to check whether the optical signal transmit and receive modules are normal by testing the mean launched power and the actual input power.
Measuring the Transmit Optical Power of an OLT PON Port
Check whether the optical module on a PON port of the OLT works properly by measuring the transmit optical power.
Prerequisites
-The OLT is powered on.
-The PON board is in the normal state.
– The PON port is enabled.
Tools, Meters and Materials
– Single-mode fiber jumper with the SC/PC connector. No longer than 1 m. Best to use new jumper.
– Burst optical power meter or ordinary optical power meter.
Impact on the System
When the transmit optical power of a PON port on the OLT is measured, the PON port will fail to transmit any service

Step 1 Configuring the measure parameters of the optical power meter.
– Unit of optical power: dBm
– Wavelength: 1490 nm
Step 2 Connect the optical power meter directly to the optical module on the OLT PON port using optical fiber jumper. The value on the optical power meter is the transmit optical power of the OLT PON port

NOTE
– If the value on the optical power meter changes within a range of 0.2 dBm, take the average value.
– If the value on the optical power meter changes in a range wider than 0.2 dBm, then it is possible that the fiber is not properly connected, the fiber is excessively bent, or the fiber connector has dust.
– Do not bend the fiber. A bent fiber may affect the test result

Measuring the Receive Optical Power of an OLT PON Port
Determine whether there are continuous mode ONUs or rogue ONUs by measuring the optical power of the OLT PON port.
Prerequisites
– The ONU is powered on.
– The ONU PON port is enabled.
– The optical fiber between the OLT and the ONU is properly connected.
Tools, Meters and Materials
Burst optical power meter
Impact on System
When the receive optical power of a PON port on the OLT is measured, corresponding PON port will fail to transmit any service.
Precautions
DANGER
Do not look into the optical port or the optical fiber connector without eye protection.

Before or after measuring the optical power, you need to clean the connector of the optical fiber. This is because if a contaminated optical fiber is connected to a normal optical fiber connector, the connector will be contaminated, which leads to abnormal attenuation and reflection and thus affecting optical path quality.
Procedure
Step 1 Configuring the measure parameters of the optical power meter.
– Unit of optical power: dBm
– Wavelength: 1310 nm
Step 2 Remove the fiber from the OLT PON port and connect it to the optical power meter.
Step 3 Wait for 10s and read the value. Check the value on the optical power meter for one minute.
Step 4 After measuring the transmit optical power, insert the optical fiber removed in step 2 to restore the connection between the ONU and the OLT
Result
– If no value can be read or the value is lower than -40 dBm on the optical power meter, there is no rogue ONU or continuous mode ONU connected to the PON port.
– If a value can always be read and is higher than -28 dBm on the optical power meter, there are ONUs in continuous mode connected to the PON port.
– If a value can be read at one time and cannot be read at another time and the value is higher than -28 dBm, there are rogue ONUs connected to the PON port (that is, an ONU that transmits data in the timeslot that is not allocated by the OLT to it).

Measuring the Transmit Optical Power of an ONU PON Port
Measuring the transmit optical power of a PON port on the ONU helps you check whether the optical module of the PON port functions properly and whether the ONU is a continuous-mode ONU or a rogue ONU.
Prerequisites
– The ONU is powered on.
– The PON port is enabled
Tools and Meters
– Single-mode optical jumper no longer than 1 m whose connector matches the ONU’s interface specifications. A new jumper is recommended.
– Burst optical power meter
Impact on the System
When the transmit optical power of a PON port on the ONU is measured, the PON port is not able to carry any service

Step 1 Configure the measuring parameters of the optical power meter.
– Optical power unit: dBm
– Wavelength (nm): 1310

Step 2 Remove all optical fibers connected to the PON ports on the ONU and ensure that the ONU is not connected to any optical splitters or OLTs.
NOTE
When certain ONUs support network protection in the case that multiple PON ports are used for upstream transmission, you need to remove all the optical cables of the ONU PON ports. This is because the continuous mode of the ONU needs to be enabled when you measure the ONU transmit power. If the ONU is connected to a splitter or OLT, the other ONUs that are connected to the same PON port fail to go online.

Step 3 Connect the optical power meter directly to the optical module on the ONU PON port using an optical jumper.

Step 4 Wait 10s and then read the value. Check the value on the optical power meter in one minute.

Step 5 Enable the continuous-mode ONU function. The value read on the optical power meter is the transmit optical power of the ONU PON port. Compare the result as tested with the PON optical module parameter in the ONU product manual.
NOTE
– Generally, an ONU does no transmit optical signals when it is not connected to the OLT. In this case, enable the continuous-mode ONU function to make the ONU transmit optical signals. For how to enable the continuous-mode ONU function, see the ONU product manual.
– If the value on the optical power meter changes within a range of 0.2 dBm, take the average value.
– If the value on the optical power meter changes in a range wider than 0.2 dBm, there is a probability that the optical fiber is not properly connected, the optical fiber is excessively bent, or the optical fiber connector is not clean.
– Do not bend the optical fiber. A bent optical fiber may affect the test result.

Step 6 After measuring the transmit optical power, disable the continuous-mode ONU function.
NOTE
After measuring the transmit optical power, you must disable the continuous-mode ONU function. Otherwise, other ONUs cannot go online after the ONU is connected to the OLT.

Step 7 Insert the optical fiber removed in step 1 to restore the connection between the ONU and the OLT.

Measuring the Receive Optical Power of an ONU PON Port
Measuring the receive optical power of an ONU PON port helps to check the optical path quality.
Prerequisites
– The OLT is powered on.
– The OLT PON port is enabled
– The optical fiber between the OLT and the ONU is properly connected.
Impact on the System
When the receive optical power of a PON port on the ONU is measured, the PON port is not able to carry any service.
Precautions
DANGER
Do not look into the optical port or the optical fiber connector without eye protection. Before or after measuring the optical power, you need to clean the connector of the optical fiber. This is because if a contaminated optical fiber is connected to a normal optical fiber connector, the connector will be contaminated, which leads to abnormal attenuation and reflection and thus affecting optical path quality.
Procedure

Step 1 Configure the measuring parameters of the optical power meter.
– Optical power unit: dBm
– Wavelength (nm): 1490

Step 2 Remove the optical fiber from the ONU PON port and connect it to the optical power meter. The value read on the optical power meter is the receive optical power of the ONU PON port.
– If the value on the optical power meter changes within a range of 0.2 dBm, take the average value.
– If the value on the optical power meter changes in a range wider than 0.2 dBm, there is a probability that the optical fiber is not properly connected, the optical fiber is excessively bent, or the optical fiber connector is not clean.
– Do not bend the optical fiber. A bent optical fiber may affect the test result

Adding a Board Offline

Leave a Reply Cancel reply