What Is the Relationship Between the LOF and LOS Alarms?

How to detect LOF and LOS alarms and what is the relationship between these two alarms? What alarm is generated if optical fibers are removed when the Huawei MA5606T or MA5652G serves as an Huawei ONU?

LOF indicates loss of frame. When such an alarm is generated, the ONU can receive optical signals. LOS indicates loss of signal. When such an alarm is generated, the ONU fails to receive optical signals. The mechanisms of detecting LOFi and LOSi alarms are as follows:

• LOFi: If four consecutive frames of an OLT fail to locate an upstream frame of an ONU, the LOFi alarm is generated and the ONU goes offline.
• LOSi: If four consecutive frames of an OLT MA5600T fail to receive an upstream optical signal of an ONU, the LOFi alarm is generated and the ONU goes offline.

The relationship between the LOF and LOS alarms is as follows:

• Use an optical attenuator to test the ATM 155/622 Mbit/s optical port and increase the attenuation gradually. It is found that the alarm status changes as follows: normal -> SD -> LOF -> LOS. This indicates that after LOF is generated, if the attenuation is increased further, no optical signal is received and LOS is generated. If an optical fiber is removed, LOF may be generated first and then LOS, which is related to the alarm detection mechanism. The LOSi, LOFi, and LCDGi alarms are detected in the time window mode. In the first several detections, if the time window detects the threshold for frame losing, the LOFi alarm will be generated.
• If the PON line generates an LOF alarm, LOS will not be generated. This is because the PON port uses the time division system. If an LOF alarm is generated, the ONT goes offline and then the OLT does not assign the timeslot (bandwidth) to the ONU. Therefore, the OLT does not detect whether the ONT transmits upstream optical signals and an LOS alarm is not generated.
• If LOS is generated, LOF/SD will be suppressed. This is because LOS is the alarm of the highest severity.

When the MA5606T and MA5652G serve as an ONU MA5628 and the optical patch is normal, LOS is generated when an optical fiber is removed.

New user cannot be created on U2000 due to a version bug

Issue Description

When customer was creating a new U2000 user, he got the error message:
Failed to connect to the server. The reason may be:
1. The client cannot find the server. Please check the server configuration.
2. The server status is abnormal. Please ensure that all the services work normally
U2000 version is V100R002C00SPC001

Alarm Information

N/A

Handling Process

1. First check in the System Monitor all processes are running normally.
2. When you create a user, in the Advanced attributes, modify the period limit according the attached picture. Sometimes you can create the new user by doing this. In case you get  "Invalid login time period. Please reset again" or "Invalid login duration" error message go to next step.
3. This problem is solved in patch CP0102. But it is suggested setup patch CP1105 directly which can relosve more issues.

Root Cause

This is a bug in the current software version.

The most popular Huawei S2700EI switch as below:

LS-S2700-9TP-SI-AC

LS-S2700-9TP-PWR-EI

LS-S2700-18TP-SI-AC

LS-S6720-30C-EI-24S-AC

Contact information:

Telephone: 852-30623083

Email: Sales@Thunder-Link.com

           Supports@Thunder-link.com            

Website: http://www.thunder-link.com

More related:

MA5600T Series Networking Protection Feature
MA5600T Series Maintenance Feature Glance
MA5600T&MA5603T&MA5608T 10G GPON Feature Glance
How to Configure the H.248-based Voice Service?
How to Login Huawei Equipment Through the Local Serial Port

How Is the VoIP Service Implemented on Huawei MA5600T by Setting the electronic Switch?

Huawei MA5600T supports the VoIP service only when the electronic switch is already switched to the VoIP daughter board. By default, Huawei MA5600T does not support the VoIP service.

Since V800R005, the VoIP service has been supported.

The MA5600T provides the following two electronic switches:

• Electronic switch 0: Used for determining whether the port on the control board or the port on the upstream interface board of the MA5600T is used for upstream transmission.
  • If the electronic switch is on location-0, it indicates that the control board is used for upstream transmission.
  • If the electronic switch is on location-1, it indicates that the upstream interface board is used for upstream transmission.
  • By default, electronic switch 0 is on location-0.
• Electronic switch 1: Used for determining whether Huawei OLT supports the VoIP service or supports upstream transmission through port 0/20/3.
  • If the electronic switch is on location-0, it indicates that the electronic switch is switched to the VoIP daughter board and thus supporting the VoIP service.
  • If the electronic switch is on location-1, it indicates that the electronic switch is switched to port 0/20/3. Then, port 0/20/3 serves as the upstream port.
  • By default, electronic switch 1 is on location-1, indicating that the VoIP service is not supported.

• The SCUL OLT main control board does not support the VoIP service and does not provide the upstream port; thus, services are upstream transmitted by only the upstream interface board.
• The SCUL control board does not support the electronic switch

Summary on the RADIUS Authentication Implemented on Huawei OLT

Some FAQs in the implementation of RADIUS authentication:

Q: By default, the reported username for RADIUS authentication is with domain name. You can run the undo radius-server user-name domain-included command to exclude it. After this configuration, whether the domain name needs to be included in the username for logging in to the device?

A:Yes, the domain name must be included in the user username for logging in to the device no matter whether the user of RADIUS authentication has configured the username that excludes the domain name by running the undo radius-server user-name domain-included command.

Q:There are two domains existing on the MA5600T after the Radius authentication is configured: a default domain, and a huawei domain authenticated by Radius. If the default domain is deleted, does the domain name need to be included in the username for login?

A: Huawei MA5600T(V800R006C02): No matter whether the user uses the default username or configured username, the domain name must be included in the username for logging in. MA5600T (V800R007 and later versions): The username can be configured by running the terminal user authentication-mode AAA domain-name command. After the configuration, system will add a domain name for the username automatically when the user logs in to the RADIUS server for authentication.

Q: Can the username of RADIUS authentication can be displayed by running the display terminal user command?

A: The display terminal user command is used to query users without domain names.

Q:Why the user authority for Radius authentication is limited and does not support config mode?

A:The user with domain name has limited authority on the Radius server, and needs to configure the priority to 2 on the Radius to enter the config mode.

Q:Does Huawei OLT support the configuration that the local account can be used only when the user logs in through a serial port but cannot be used when the user logs in remotely?

A:MA5600T of version V800R006C02 does not support it. The V800R007 and later versions of MA5600T can support this configuration for some accounts (excluding the root and admin account): run the terminal user authentication-mode AAA domain-name command to set the authentication mode of the terminal user to AAA. In this case:

• The system can add an .@huawei to the username that has no domain name.
• The AAA account can be used to log in remotely, and the account can pass the authentication. If the local account is used to log in remotely, then the account cannot pass the authentication. However, the root and admin account can pass the authentication for remote login, other local accounts cannot.

Huawei GPON Service board GPBH

GPBH is a 8-port GPON Interface Board apply to Huawei MA5600T, MA5603T, MA5608T. It works with the optical network terminal (ONT) to provide GPON access service.

Working principle of the GPBH board 

The basic working principle of the GPBH board is as follows:

• The control module loads the board software, controls the running of the board, and manages the board.
• The switching module aggregates the signals from eight GPON ports.
• The interface module converts between GPON signals and Ethernet packets.
• The power module supplies power to other functional modules of the board.
• The clock module provides the working clock for other functional modules of the board.

What is the positioning and network applications of Huawei SmartAX MA5600T/MA5603T/MA5608T series devices?

Huawei MA5600T/MA5603T/MA5608T is a series of integrated fiber-copper access devices. They support ADSL2+, VDSL2, SHDSL, POTS, GPON, 10G GPON, and P2P access modes and provide Internet access, voice, and video services to subscribers. As a series of large-/medium-/small-capacity devices, they share the same software platform and service boards.

• Large-capacity device MA5600T
• Medium-capacity device MA5603T
• Small-capacity device MA5608T

Application

The MA5600T/MA5603T/MA5608T is a series of large-/medium-/small-capacity devices that support integrated fiber-copper access and access-aggregation integration.

Application network

MA5600T

The MA5600T is an integrated fiber-copper access device, and can serve as a DSLAM, OLT, or aggregation OLT.

• The MA5600T, if serving as a large-capacity DSLAM, supports ADSL2+, VDSL2, SHDSL, and POTS access modes.
• The MA5600T, if serving as a large-capacity OLT, supports GPON, 10G GPON, and P2P access modes.
• The MA5600T, if serving as an aggregation OLT, supports FTTB/FTTC/DSLAM aggregation access, which simplifies the network architecture, reduces types and number of devices, and minimizes the CO equipment room space and energy consumption.

MA5603T

The MA5603T is an integrated fiber-copper access device, and can serve as a DSLAM, OLT, or MDU.

• The MA5603T, if serving as an OLT, supports GPON and 10G GPON access modes. It can be installed at a residential district or a street side, which reduces the usage of ODN backbone optical cables, lowers the ODN deployment cost and difficulty, and minimizes the CO equipment room space.
• The MA5603T, if serving as a DSLAM, supports ADSL2+, VDSL2, SHDSL, and POTS access modes.
• The MA5603T, if serving as an MDU, supports ADSL2+, VDSL2, SHDSL, and POTS access modes and transmit packets upstream to the OLT through a GPON/10G GPON/GE/10 GE port.

MA5608T

The MA5608T is an integrated fiber-copper access device, and can serve as a mini-OLT or mini-DSLAM.

• The MA5608T, if serving as a mini-OLT, supports GPON and 10G GPON access modes. It can be installed at a residential district or a street side, which reduces the usage of ODN backbone optical cables, lowers the ODN deployment cost and difficulty, and minimizes the CO equipment room space.
• The MA5608T, if serving as a mini-DSLAM, supports ADSL2+, VDSL2, SHDSL, and POTS access modes and provides Internet access, voice, and video services

How to Configure MDUs Subtended to an Huawei OLT?

Configuring MDUs Subtended to an OLT

MDUs are subtended to an Huawei OLT through the P2P board, thereby saving upstream optical fibers and simplifying the network and service configuration.

Service Requirements

• MDU_1 and MDU_2 are connected to an OLT through GE subtending, implementing the Internet access service.
• The Internet access service is provided in the PPPoE dialing mode.

Figure 1 Network of MDUs subtended to an OLT 

Procedure

• Configure the your MA5600T or MA5603T or MA5608T.
1. Configure the port role.
   Configure the port role of the P2P board as a subtending port. The port roles of the P2P board are user port and subtending port. By default, the port role is user port.

   huawei(config)#interface eth 0/2
   huawei(config-if-eth-0/2)#network-role cascade
   huawei(config-if-eth-0/2)#quit

2. Create a VLAN and add an upstream port to the VLAN.
   Create smart SVLAN 100. The upstream port is port 0/9/0.

   huawei(config)#vlan 100 smart
   huawei(config)#port vlan 100 0/9 0

3. Configure a service port.
   Add the service port to the SVLAN by using default traffic profile 6. The CVLAN ID is 200, the same as the upstream VLAN ID of the MDU. MDU_1 and MDU_2 are connected to ports 0/2/0 and 0/2/1 of the OLT respectively.

   huawei(config)#service-port vlan 100 eth 0/2/0 multi-service user-vlan 200
    rx-cttr 6 tx-cttr 6
   huawei(config)#service-port vlan 100 eth 0/2/1 multi-service user-vlan 200
    rx-cttr 6 tx-cttr 6

4. Save the data.

   huawei(config)#save

Configure the MDUs.

The configurations of MDU_1 and MDU_2 are the same. The configuration of MDU_1 is used as an example.

1. Create a VLAN and add an upstream port to the VLAN.
   Create smart SVLAN 200. The upstream port is port 0/0/1.

Result

On the PC, the Internet access service is provided in the PPPoE dialing mode.

Do you know how to configure GPON FTTH Layer 2 Internet Access Service on the NMS?

Services can be configured for an Huawei ONT HG8245H only after the ONT is successfully added to an OLT.

Networking

• The PC gains access to the Internet in PPPoE dialup mode.
• The ONT is connected to the GPBC card of the OLT through an optical fiber.
• The broadband remote access server (BRAS) provides broadband user access and functions of authentication and accounting.

Configuring the GPON FTTH Internet service 

Procedure

 NOTE:

After all profiles are configured, perform the following steps to issue them to the device:

• In the information list, right-click the record and choose Download to NE from the shortcut menu.
• In the dialog box that is displayed, select the required NE(s), and click OK.

1, Configure a DBA profile.

2, Configure a line profile.

In a line profile, a GEM port can be bound to up to eight service streams. In a GEM port, different GEM connections need to be set up for different service streams.

In this example, the mapping between GEM ports and ONT-side services is implemented through VLANs, and the service streams of each service are mapped to GEM port 14. In addition, different GEM connections are set up for the management VLAN and the VLANs for the Internet, voice, and multicast services.

3, Configure a service profile.

Set the port capability set to adaptive. Then, the system adapts the port capability set of an online ONT to its actual capability. Then, in the ONT service profile, configure a VLAN translation policy to translate C-VLAN 1001 to VLAN 100.

4, Configure an MEF IP traffic profile.

The profile name is ftth_hsi, CIR is 4 Mbit/s, and the priority is 0. Traffic is scheduled based on the priority specified in the profile.

5, Configure a service VLAN on the OLT MA5600T side.

The prerequisite for performing operations in the navigation tree is to navigate to the NE Explorer of the OLT. To navigate to the NE Explorer of the OLT, do as follows: In the Main Topology, double-click the required OLT in the Physical Root navigation tree; or right-click the required OLT and choose NE Explorer from the shortcut menu.

A service VLAN is the VLAN used for the Internet service.

Provision services.

The prerequisite for performing operations in the navigation tree is to navigate to the NE Explorer of the OLT. To navigate to the NE Explorer of the OLT, do as follows: In the Main Topology, double-click the required OLT in the Physical Root navigation tree; or right-click the required OLT and choose NE Explorer from the shortcut menu.

1. Add an ONT.
   The ONT connects to the GPON port 0/1/0 is ONT 1. The serial number of the ONT is 32303131D659FD40, password is 0100000001, discovery mode for password authentication is once-on, management mode is OMCI, bound ONT line profile name is ftth, and the ONT service profile name is ftth.
2. Configure an ETH port of Huawei GPON ONU.
3. Add a service virtual port on the OLT side.

Result

Check whether the user successfully gains access to the Internet through dialup on the PC.

1. The LAN1 port of the ONT is connected to the Ethernet port of the PC properly.
2. Dial up on the PC using the PPPoE dialup software.
3. The user gains access to the Internet on the PC after the dialup is successful.

Function Module and Access Service Flow of Huawei MA5600T/MA5603T/MA5608T

The supports function modules such as service interface modules, Ethernet switching module, and service control module, and supports the xDSL, xPON, and POTS access services.

Overview

The mainly consists of service interface modules, core processing modules, and upstream interface modules, as shown in Figure 1.

Figure 1 Functional architecture of Huawei MA5600T/MA5603T/MA5608T 

Service Interface Modules

The service interface modules provide various ports for the direct access of multiple services. The service interface modules include the following:

• 10G GPON and GPON interface module: comprised by optical module (It receives and transmits optical signals, and converts between optical and electrical signals.), GMAC module (It implements encapsulation and decapsulation of GPON protocol frames.), Layer 2 forwarding module (It implements the Ethernet Layer 2 forwarding and QoS.), CPU (It implements the boards management and service control.), power module (It supplies power to other function modules of the board.) and Clock module (It provides the working clock for various function modules of the board.) to provide the 10G GPON or GPON access. Corresponding to the 10G GPON board and GPON board.
• P2P access module: comprised by optical interface module, Layer 2 forwarding module, CPU, power module, and clock module to provide the P2P access. Corresponding to the OPGD board
• POTS interface module: comprised by the interface module, PCM signal processing module (It converts PCM data into IP voice packets, and implements functions such as encoding/decoding and echo cancellation.), Layer 2 forwarding module, CPU, power module, and clock module to provide POTS access. Corresponding to xDSL over POTS board and some of the voice board, for example ASPB board and VDPD board.
• ISDN interface module: comprised by the interface module, service processing module(It used to processes the ISDN service of the board, including extracting signaling and switching data.), CPU, power module, and clock module to provide ISDN access. Corresponding to some of voice board and xDSL over ISDN board, for example DSRD and VDQM boards.
• GE interface module: comprised by the interface module, CPU, switching module, power module, and clock module to provide upstream transmission and cascading. Corresponding to the ETHB and SPUA boards.
• xDSL interface module: comprised by the interface module, Layer 2 forwarding module, CPU, power module, and clock module to provide xDSL access. Corresponding to the ADSL, VDSL, and SHDSL boards

Different interface modules have different service boards. For details about working principle of an interface module, see the description of the corresponding service board in the Hardware Description.

This section describes the flows of various of access services.

• Service flows passing the Ethernet switching module and then the upstream interface module for upstream transmission, including GPON service flow (GE/10GE upstream), P2P service flow (Ethernet upstream), xDSL service flow (GE/10GE upstream), Converting the native TDM service into E1/STM-1 service flow (E1/STM-1 upstream). Converting the native TDM service into E1/STM-1 service is the native TDM service that is transmitted through GPON is converted by the MA5600T/MA5603T/MA5608T. The device terminates the native TDM service, and transmits the service to the network-side device through E1/STM-1.
• Service flows passing the Ethernet switching module, related service processing modules, and then the Ethernet switching module for upstream transmission. Such service flows convert the native TDM service into SAToP service and POTS service that use GE/10GE for upstream transmission. In this service flow, the native TDM service that is transmitted through GPON is converted by the MA5600T/MA5603T/MA5608T. The device encapsulates the native TDM service into PWE3 service. Therefore, this service flow is also called converting the native TDM service into TDM PWE3 service. The purpose of this service flow is to ensure the emulation transmission of the TDM service.

What are the Highlights of Huawei SmartAX MA5600T/MA5603T/MA5608T Product (1)

HetAN

Huawei MA5600T/MA5603T/MA5608T serves as the CO OLT and supports multiple network construction modes and diversified access media to provide access for home users, mobile users, and enterprise users. Such a heterogeneous access network (HetAN) wins popularity

-User access: provides access for home users, mobile users, and enterprise users.
-Network construction mode: supports FTTH, FTTB, FTTC, FTTW, FTTO, and FTTD networks.
-Access media: supports copper, fiber, cable, power line, and Wi-Fi access.

All in One

The integrated fiber-copper access platform and the access-aggregation integration capability of the MA5600T/MA5603T/MA5608T effectively ensure the smooth evolution of the access network.

What Is the Relationship Between the LOF and LOS Alarms?

How to detect LOF and LOS alarms and what is the relationship between these two alarms? What alarm is generated if optical fibers are removed when Huawei MA5606T or MA5652G serves as an Huawei ONU?

LOF indicates loss of frame. When such an alarm is generated, the ONU can receive optical signals. LOS indicates loss of signal. When such an alarm is generated, the ONU fails to receive optical signals. The mechanisms of detecting LOFi and LOSi alarms are as follows:

• LOFi: If four consecutive frames of an OLT fail to locate an upstream frame of an ONU, the LOFi alarm is generated and the ONU goes offline.
• LOSi: If four consecutive frames of Huawei OLT fail to receive an upstream optical signal of an ONU, the LOFi alarm is generated and the ONU goes offline.

The relationship between the LOF and LOS alarms is as follows:

• Use an optical attenuator to test the ATM 155/622 Mbit/s optical port and increase the attenuation gradually. It is found that the alarm status changes as follows: normal -> SD -> LOF -> LOS. This indicates that after LOF is generated, if the attenuation is increased further, no optical signal is received and LOS is generated. If an optical fiber is removed, LOF may be generated first and then LOS, which is related to the alarm detection mechanism. The LOSi, LOFi, and LCDGi alarms are detected in the time window mode. In the first several detections, if the time window detects the threshold for frame losing, the LOFi alarm will be generated.
• If the PON line generates an LOF alarm, LOS will not be generated. This is because the PON port uses the time division system. If an LOF alarm is generated, the ONT goes offline and then the OLT like MA5603T does not assign the timeslot (bandwidth) to the ONU. Therefore, the OLT does not detect whether the ONT transmits upstream optical signals and an LOS alarm is not generated.
• If LOS is generated, LOF/SD will be suppressed. This is because LOS is the alarm of the highest severity.

When the MA5606T and MA5652G serve as an ONU and the optical patch is normal, LOS is generated when an optical fiber is removed.

Multiple services in multiple VLANs Service Networking (GPON/10G GPON)

In home service (VLAN tag transparent transmission) networking, a distributed converged
cable access platform (D-CCAP) connects to cable modems (CMs) at user homes through
radio frequency (RF) ports and provides home services for users, including the cable TV
(CATV) service, Internet access service, and VoD service. This section describes how to
configure the optical line terminal (OLT MA5600T)  to provision the home services.

Service Requirements
Users require the provisioning of the broadcast and TV services, Internet access service, and
VoD service. Broadcast and TV services can be provisioned immediately after the distributed
converged cable access platform (D-CCAP) hardware is connected. This section only
describes how to configure the Internet access service, and VoD service.

Usage Scenario
Some carriers deploy HGWs on the lower-layer of CMs. The HGWs add different VLAN tags
to packets based on service types. This requires that the CMCs support transparent
transmission of VLAN tags. As shown in Figure 9-17, a D-CCAP is deployed on an optical
node and cable modems (CMs) are deployed at user homes. The CMs connect to radio
frequency (RF) ports on the MA5633 through cables.
-Port 1 on CM connects to a PC to provide the Internet access service. A set top box
(STB) connects to the distributor to provide a backhaul channel for the VoD service.
-Users access the Internet through Dynamic Host Configuration Protocol (DHCP) dialup.
-The IP addresses of the CM, STB, and PC are assigned by the DHCP server and in
different network segments.
-The D-CCAP is used as a GPON remote extended frame. This reduces D-CCAP
management and maintenance costs and simplifies configurations.

Home service networking (VLAN tag transparent transmission)

Configuration Process

Configuration roadmap for the home service networking

1, Add a remote extended frame to the OLT.

An MA5633 that works as a remote extended frame connects to a port on a cascading board of an Huawei optical line terminal (OLT). You can configure the remote extended frame only after adding it to the

OLT.

2, Configure radio frequency (RF) port parameters (DOCSIS 3.0). Configure radio frequency (RF)

port parameters (DOCSIS 3.1). Radio frequency (RF) port parameters define the frequency spectrum range for signal transmission and modulation mode.

The configuration of RF port parameters implements data service transmission over

cables. RF port parameters can be configured using either of the following methods:

-Use a cable initialization profile to configure the parameters.

-Customize the parameters in cable mode.

3, Configure the high-speed Internet (HSI) service.

4, Configure the DOCSIS VoD service.

If Huawei ONU MA5633 is not equipped with a built-in EQAM module, the MA5633 uses DOCSIS channels to transmit VoD data.

If the MA5633 is equipped with a builtin EQAM module, the MA5633 sets idle downstream DOCSIS channels as EQAM channels to transmit VoD data.

The DOCSIS VoD service and the EQAM VoD service are generally not concurrently used. 

5, Verify the configured services.

An OLT supports multiple remote service verification methods. This allows commissioning and configuration engineers to remotely verify services.

1. A DHCP dialup emulation test checks whether the OLT can communicate with the DHCP server and verifies CM DHCP configurations on the DHCP relay, proxy, and server.

2. The status of a CM can be queried. Based on the information, you can determine whether the CM is online.

How to configure GPON Type B Single-Homing Protection?

This section describes how to configure GPON type B single-homing protection on an OLT to implement GPON port 1+1 redundancy backup, which ensures that services are not interrupted if a fault occurs on the OLT's PON port or backbone fiber.

Precautions
After GPON type B single-homing protection is configured, the service configurations on an Huawei optical network unit (ONU) remain unchanged and data is transmitted or received over the primary GPON port.
The GPON type B protection function is incompatible with the GPON type C protection functions. Only one of the two functions can be enabled on a network.

Procedure
Step 1 Run the protect-group command to create a protection group for GPON access ports.
Step 2 Run the protect-group member command to add a protection member to the protection group.
Step 3 Run the protect-group enable command to enable the protection group.
A created protection group is disabled by default.
Step 4 Run the display protect-group command to query the information about the protection group and all the members in the protection group.

Result
After the configuration, the primary GPON port on Huawei OLT works in active mode and the secondary GPON port works in standby mode.
An automatic switching can be triggered by any of the following conditions:
OLT GPON port failureuyi
Fractures of optical fibers
Quality deterioration of lines
For a type-B inter-board protection group, if an the customer needs to change the board that houses the active PON port, trigger type-B protection switching to activate the standby PON port, and then migrate the to-be-migrated PON port to the target board.

Example
The following configurations are used as an example to configure GPON type B single-homing protection on the OLT:
Protection group members: 0/2/0 and 0/2/1 (on the same GPON service board)
Primary port: 0/2/0
Secondary port: 0/2/1

The following configurations are used as an example to configure type B single-homing protection on the OLT:
Protection group members: 0/3/1 and 0/4/1 (on different GPON service boards)
Primary port: 0/3/1
Secondary port: 0/4/1

N2000BMS shows the alarms with an early hour because the NE does not have configured the right time zone

Issue Description

The alarms displayed in the N2000BMS are displayed with an early hour.
The alarm is reported in the OLT MA5600V800R007
Example:
the next alarm is reported in Huawei MA5600T at 01:39:49-05:00, but, in the N2000BMS appear the same alarm at 02:39:49. The time in the N2000BMS is the real time.

Handling Process

Because of the BMS had the correct time, so, it was supposed that the DST was not configured in the NEs.
It was analyzed the time settings and the time zone  in Huawei OLT.

Ceylan(config)#display time                                                  
{ <cr>|dst<K>|time-stamp<K> }:                                                 

  Command:                                                                   
          display time                                                       
  2011-11-02 10:10:03-05:00                                                                                                                                 
Ceylan(config)#display timezone                                              
The current time zone:  GMT-05:00
it was found that the timezone is not the correct. So it was requested change the timezone to make a test.

After modify the time zone to the correct one, the alarms was reported in the N2000BMS with the correct time.
However, to avoid changing the timezone every period of time, it was suggested to enable the DST.

Ceylan(config)#display time dst                                              
  Failure: DST has not been configured  
  

Suggestions

Verify the timezone of the country to set the correct one in the NE or in the Server. Also, consider use the DST feature.