How to add an ONU to an OLT?

How to add a Huawei ONU to a Huawei OLT? This is a problem that most customers will involve. As we know, services can be configured for an optical network unit (ONU) only after the ONU is added to an optical line terminal (OLT). For example, adding Huawei ONU MA5626 to Huawei OLT MA5608T with the same principle. So, let’s see how to do it.

Huawei MA5626 8FE

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Data Plan

Item Data
DBA profile Profile name: fttd_dba
Profile type: type3
Assured bandwidth: 8 Mbit/s
Maximum bandwidth: 20 Mbit/s
ONU line profile Profile name: fttd
GEM port ID for the management service: 11
GEM port ID for the voice service: 12
GEM port ID for the video service: 13
GEM port ID for the Internet access service: 14
ONU service profile Profile name: fttd
ONU port capability set: one VSDL2 port and two POTS ports
Network topology data PON port: 0/1/0
ONU IDs: 1


1. Configure GPON MA5626 profiles

GPON MA5626 profiles include the DBA profile, line profile, service profile, and alarm profile.

l DBA profile: A DBA profile describes GPON traffic parameters. A T-CONT is bound to a DBA profile for dynamic bandwidth allocation, improving upstream bandwidth utilization.

l Line profile: A line profile describes the binding between the T-CONT and the DBA profile, the QoS mode of the traffic stream, and the mapping between the GEM port and the ONU-side service.

l Service profile: A service profile provides the service configuration channel for the ONU that is managed by using optical network terminal management and control interface (OMCI).

l Alarm profile: An alarm profile contains a series of alarm thresholds to measure and monitor the performance of activated ONU lines. When a statistical value reaches the threshold, the host is notified and an alarm is reported to the log host and the NMS.

a. Configure a DBA profile

Run the ‘display dba-profile’ command to query existing DBA profiles in the system. If the existing DBA profiles in the system do not meet the requirements, run the ‘dba-profile add’ command to add a DBA profile.

Create the same DBA profile for different types of services. Set the profile name to ‘fttd_dba’, profile type to ‘type3’, assured bandwidth to 8 Mbit/s, and maximum bandwidth to 20 Mbit/s.

huawei(config)#dba-profile add profile-name fttd_dba type3 assure 8192 max 20480


The DBA implementation is based on an ONU. Therefore, select a DBA profile of the proper bandwidth type and configure proper bandwidth according to the service types and total user count of the ONU. Note that the sum of the fixed bandwidth and the assured bandwidth must not be greater than the total bandwidth of the PON port.

b. Configure MA5626 line profile

Create a GPON MA5626 line profile, named‘fttd’, and bind it to the DBA profile‘fttd_dba’.

huawei(config)#ont-lineprofile gpon profile-name fttd
huawei(config-gpon-lineprofile-1)#tcont 4 dba-profile-name fttd_dba

c. Create different GEM ports according to different service types

GEM port 11 is used to carry management services.

GEM port 12 is used to carry voice services.

GEM port 13 is used to carry video services.

GEM port 14 is used to carry Internet access services.

huawei(config-gpon-lineprofile-1)#gem add 11 eth tcont 4
huawei(config-gpon-lineprofile-1)#gem add 12 eth tcont 4
huawei(config-gpon-lineprofile-1)#gem add 13 eth tcont 4
huawei(config-gpon-lineprofile-1)#gem add 14 eth tcont 4



1. To change the default QoS mode, run the qos-mode command to set the QoS mode to gem-car or flow-car, and run the gem add command to set the index of the traffic profile bound to the GEM port.

2. When the QoS mode is priority-queue (PQ), the default queue priority is 0; when the QoS mode is flow-car or gem-car, traffic profile 6 is bound to the GEM port by default (no rate limitation).

After the configurations are complete, run the commit command to apply the parameter settings.


d. Configure MA5626 service profile

Create GPON MA5626 service profile, named ‘fttd’. Configure the capability set of the VDSL2 port and POTS port to 1 and 2. Then the system automatically adapts to the MA5626 according to the actual capability of the online MA5626.

huawei(config)#ont-srvprofile gpon profile-name fttd
huawei(config-gpon-srvprofile-1)#ont-port vdsl 1 pots 2

After the configurations are complete, run the commit command to apply the parameter settings.


e. (Optional) Add an alarm profile

The default GPON alarm profile 1 is used. The alarm thresholds of the default alarm profile are 0, which indicates that no alarm is generated.

In this example, the default alarm profile is used, and therefore the configuration of the alarm profile is not required.

Run the‘GPON alarm-profile add’command to configure a GPON alarm profile, which is used for monitoring the performance of an activated MA5626 line.

2. Add MA5626

Huawei MA5626 front pic.jpg

Connect an MA5626 to GPON port 0/1/0. Set the MA5626 ID to‘1’, password to ‘0100000001’, discovery mode for password authentication to once-on, and management mode to ‘OMCI’. Bind the MA5626 to MA5626 line profile ‘fttd’ and MA5626 service profile‘fttd’.

There are two methods of adding MA5626: add MA5626 offline and confirm an automatically discovered MA5626.

a. Add MA5626 offline.

If the password of MA5626 is known, run the ‘ont add’ command to add MA5626 offline.

huawei(config)#interface gpon 0/1
huawei(config-if-gpon-0/1)#ont add 0 1 password-auth 0100000001 once-on no-aging omci ont-lineprofile-name
fttd ont-srvprofile-name fttd

b. Confirm automatically discovered MA5626s

If the password or SN of MA5626 is unknown, run the ‘port portid ont-auto-fin

d enable’ command in GPON mode to enable the MA5626 auto-discovery function of the GPON port. Then, run the ‘ont confirm’ command to confirm the MA5626.

huawei(config)#interface gpon 0/1
huawei(config-if-gpon-0/1)#port 0 ont-auto-find enable
huawei(config-if-gpon-0/1)#display ont autofind 0
     //After this command is executed, the information about all ONUs connected to the GPON port through optical splitters is displayed.
huawei(config-if-gpon-0/1)#ont confirm 0 ontid 1 password-auth 0100000001 once-on no-aging omci ont-lineprofile-name
fttd ont-srvprofile-name fttd


If multiple ONUs of the same type bound to the same line profile or service profile are connected to the same port, you can bulk add ONUs by bulk confirming automatically discovered ONUs to make configuration easier and more efficient. To do so, the preceding command can be modified as follows:

huawei(config-if-gpon-0/1)#ont confirm 0 all password-auth once-on no-agin omci ont-lineprofile-name fttd 
ont-srvprofile-name fttd


The password entered when you add an ONU to the OLT must be the same as that configured on the web page. To configure the password of the ONU on the web page. See figure 1.

Figure 1: Modifying ONU password on the web page

ONU web page .png

(Optional) Bind the alarm profile to the ONU.

The default profile 1 is used in this example.

huawei(config-if-gpon-0/1)#ont alarm-profile 0 1 profile-id 1

3.Check MA5626 status

After an MA5626 is added, run the ‘display ont info’ command to query the current status of the MA5626. Ensure that ‘Config flag’ of the MA5626 is ‘active’, ‘Run State’ is ‘online’, ‘Config’ state is ‘normal’, and ‘Match state’ is ‘match’.

huawei(config-if-gpon-0/1)#display ont info 0 1
F/S/P                : 0/1/0 
ONU-ID               : 1 
Control flag         : active    //Indicates that the ONU is activated. 
Run state            : online    //Indicates that the ONU goes online successfully. 
Config state         : normal    //Indicates that the configuration state of the ONU is normal. 
Match state          : match     //Indicates that the capability profile bound to the ONU is consistent with the actual capability of the ONU.
...//The rest of the response information is omitted.

When‘Config state’ is ‘failed’, ‘Run state’ is ‘offline’, or ‘Match state’ is‘mismatch’:

If ‘Control flag’ is ‘deactive’, run the ‘ont active’ command in GPON mode to activate the MA5626.

If ‘Run state’ is ‘offline’, a physical line may be broken or the optical module may be damaged. Check the line and the optical module.

If ‘Config state’ is ‘failed’, the configured MA5626 capability exceeds the actual MA5626 capability. In this case, run ‘the display ont failed-configuration’ command in the diagnose mode to check the failed configuration item and the failure cause. Then, rectify the fault accordingly.

After reading this article, you can try to use the Huawei ONU you have right now, add it on the Huawei MA5608T/MA5683T/MA5800 X7 etc. by following above procedures. If any question, don’t hesitate to contact Thunder-link sales team or support team.

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