Huawei HG8010H an Intelligent bridging-type ONT

Huawei EchoLife HG8010H optical network terminal (ONT) is a indoor optical network terminal in Huawei FTTx solution. By using GPON technology, ultra-broadband access is provided for home and SOHO users. The HG8010H provides one 10/100/1000M Base-T Ethernet port for connecting to a home gateway. The home gateway then can be connected to a PC, Mobile Terminal, STB, or Video phone to provide high-speed data, video services and WiFi.

Huawei HG8010H Interface Parameters

GPON Port

Class B+

Receiver sensitivity: -27dBm

Wavelength blocking filter (WBF)

Flexible mapping between GEM Port and TCONT

GPON: consistent with the SN or password authentication defined in G.984.3

Bi-direcetional FEC

SR-DBA and NSR-DBA

Ethernet port

Ethernet port-based VLAN tags and tag removal

1:1 VLAN, N:1 VLAN, or VLAN transparent transmission

QinQ VLAN

Limit on the number of learned MAC address

MAC address learning

Transparent transmission of IPv6 packets at Layer 2

Huawei DWDM Flexible Bandwidth Utilization Based on ODUflex

Huawei OptiX OSN 8800 supports the optical data unit flexible (ODUflex) feature. This feature enables the OptiX OSN 8800 to adapt itself to various services, such as video, storage, and data services as well as future IP services.

Transport of Generic CBR Signals

ODUflex can be used to transmit constant bit rate (CBR) services on an optical transport network (OTN). The services whose CBRs are higher than 2.48832 Gbit/s are mapped to an ODUflex (CBR) container in bit synchronization mode. Functions such as end-to-end performance monitoring and protection switching are feasible on the ODUflex (CBR) container. The overheads and monitoring management modes of ODUflex services and traditional ODUk are the same.

below shows how ODUflex is used to transport generic CBR signals. An FC400 service occupies four ODTUk timeslots and is mapped to an ODUflex container. A 3G-SDI service occupies three ODTUk timeslots and is mapped to an ODUflex container. Each ODTUk timeslots provides 1.25 Gbit/s bandwidth. The FC400 and 3G-SDI services share the same OTU2 wavelength.

ODU2 is used to transport generic CBR signals. The FC400 and 3G-SDI services are mapped to different ODU2 containers. Therefore they occupy different OTU2 wavelengths.

Transport of VBR Packet Services

ODUflex can also be used to transport variable bit rate (VBR) packet services to address the requirements of transporting packet services running at VBRs. Since packet services run at VBRs, ITU-T has defined ODUflex(GFP) signals for transporting packet services over an OTN network. The ODUflex(GFP) signals are mapped differently from CBR client signals and use different bit rates as the ODUflex(CBR) signals. The ODUflex(GFP) signals are mapped using the GFP-F method and the bit rate for the signals is defined to about N x 1.25 Gbit/s, where N represents the number of the ODTUk timeslots.

In this application, ODUflex ensures that resilient packet services are correctly transmitted over Huawei OTN network. For example, ODUflex can be used in a 3G backhaul bearer network or an enterprise/bank packet quality private line application. ODUflex(GFP) can flexibly resize the bandwidth based on the bandwidth required by packet services and therefore adapts to flexible changes in service bandwidth and ensures high-quality service transmission.

Huawei S6700 Series Switch Applications

Data Centers
Huawei S6700 can be used in Huawei's sustainable data center solution, which offers four major advantages: evolution, availability, pooling, and visualization.

As shown in the following figure, the S9700 Terabit routing switches function as core switches in a data center and use firewall and load balancer boards to ensure security and load balancing. The S6700 functions as an access switch and provides high-density 10GE ports to connect to 10G servers.

Campus Networks
The S6700 like S6700-48-EI can function as a core switch on a campus network and provide high-density line-speed 10GE ports, rich service features, and comprehensive security mechanisms. This makes Huawei S6700 a cost-effective option.

Huawei OSN3500 Cross-Connect Boards SXCSA

Application

The SXCSA is a super cross-connect and synchronous timing board apply to Huawei MSTP OSN3500. The SXCSA provides service grooming and clock input/output functions in the OptiX OSN system.

The cross-connect and synchronous timing board provides the other boards in the system with the timing information, converges and grooms services, communicates with the other boards in the system, and performs the configuration and management functions for the other boards in the system.

Position of the cross-connect and synchronous timing board in the system 

Working Principle and Signal Flow

Huawei SXCSA consists of the synchronous timing module, cross-connect module, communication and control module, and power module.

Functional block diagram of the SXCSA 

Synchronous Timing Module

The synchronous timing module uses the centralized timing allocation mode as the clock mode. The synchronous timing module also selects one clock source from reference clock sources as the reference clock for the timing module. The reference clock sources are from the line board, the tributary board, or the external synchronous clock source. The synchronous clock source and 2 Mbit/s or 2 MHz external synchronous clock source are then generated.

The precise 38 MHz oscillator ensures that the reference clock complies with ITU-T standards in free-run mode.

The SDH clock (SETS) can work in the following modes:

• Lock mode
• Hold-over mode
• Free-run mode

When working in lock mode, the SETS extracts the clock from three types of timing signals:

• Timing signal (T1) from the STM-N line
• Timing signal (T2) from the PDH line
• Reference signal (T3) from the external synchronous clock source (2 MHz or 2 Mbit/s)

The timing module outputs the following timing signals:

• T0, system clock
• T4, external timing output signal (2 Mbit/s or 2 MHz)

Cross-Connect Module

The cross-connect module consists of two parts:

• SNCP module, which tests relative alarms and reports the alarms to the software to trigger the protection switching such as the SNCP switching and MSP switching.
• Higher order and lower order cross-connect module, which performs the functions of higher order and lower order cross-connect units.

Communication and Control Module

The communication and control module is a sub-system provided by the pinch board. It consists of the CPU, register, Ethernet port, HDLC controller, FPGA loading controller, and bus driver. This module is connected to external circuits through buses to manage and configure other units of the boards.

Power Module

It converts the –48 V/–60 V power supply into the DC voltages that the modules of the board require.

How to Install the Patch of iManager U2000 V100R002C01CP5002 fails?

Issue Description

Customer need to install the patch V100R002C01CP5002 to his U2000 single-server System which is already upgraded to V100R002C01SPC100 , Huawei Engineer follow the installation guide and check all Precautions and the Preparations but when the engineer reach the upgrade step described as below :
12. Run the following commands to install the MSuite patch:
#cd /opt/nmspatch/patch
#chmod 755 *.sh
#./pre_patch.sh
he got the below error message and could not continue the installation
Installing the MSuite patch. Please wait...
Traceback (most recent call last):
File "patch/pre_patch.py", line 446, in ?
_patchNMSApp(curPatchPath)
File "patch/pre_patch.py", line 233, in _patchNMSApp
_copyFile(vcfcfgPath + "/process/process_std", nmsappPath + "/flag/nonCritic
alProcessList")
File "patch/pre_patch.py", line 57, in _copyFile

shutil.copyfile(fromFile, toFile)
File "/opt/U2000/server/3rdTools/python/lib/python2.4/shutil.py", line 49, in
copyfile
fdst = open(dst, 'wb')
IOError: [Errno 2] No such file or directory: '/opt/NMSApp/flag/nonCriticalProce
ssList'
#
please check attached Fig-1.

Alarm Information

None.

Handling Process

WE have check each of previous reason to find the root cause as below
1. NMS process has been already ended as the below commands does not display ( imap_sysmonitor -cmd start )
# ps -ef | grep imap 
2. Sybase database has been already ended as the below commands display no result.
#su - sybase
$cd /opt/sybase/ASE*/install
$ ./showserver|grep DBSVR

3. Msuite process has been already ended as the below commands does not display ( /opt/HWNMSJRE/jre_sol/bin/java -server)
#ps -ef | grep java.
4. UEasy check have been made and it shows no item with [No Go].
we contact RND for support, the reply was to check that No such file or directory: '/opt/NMSApp/flag/nonCriticalProcessList'
when we check we find that '/opt/NMSApp' directory exists, but the flag directory is not exists under that directory as shown in Fig-2,3
The RND reply again to confirm if this is Single Server or HA system , we confirm that it is Single Server system.
Thus the RND find the solution and reply to delete that directory '/opt/NMSApp' . After we delete it, the problem solved and installation complete
as shown in Fig-4.
 

Root Cause

Cause -1- \ the NMS processes have not been ended.
Cause -2- \ the Sybase database is still running and should be ended.
Cause -3- \ the MSuite server process has not been ended.
Cause -4- \ May need to Run UEasy check and send the Output report to ask for support.

Suggestions

It was found that this server has been used for HA before, then it has been modified to be used as single server , this is explain why the folder /opt/NMSApp was exists.
Thus in any case you are going to install that patch on Single-Server system check that this folder is not exists.

More related: 

U2000V100R006C02SPC301 Installation Introduction_Part 1

U2000V100R006C02SPC301 Installation Introduction_Part 2

Installing the U2000 Client on Windows

Troubleshooting the FTTx GPON Service

How to Configurethe GPON FTTH Voice Service?

Huawei DSLAM MA5616 Power Distribution Principle and Working Principles

Power Distribution Principle

Huawei MA5616 can be powered by a DC or AC power source through a DC or AC power board. The power board outputs -48 V DC, +3.3 V DC, and +12 V DC power to the backplane. Then the backplane provides the -48 V DC and +3.3 V DC power for the service board and control board, and provides the +12 V DC power for the fan monitoring board.

Power distribution principle of the MA5616 chassis(DC-powered H831PDIA /H832PDIA /H832PDVA/ H832PDVAA) 

Power distribution principle of the MA5616 chassis (AC-powered by H831PAIA/H831PAIC) 

Power distribution principle of the MA5616 chassis (AC-powered with power backup by H831PAIB) 

Working Principles

Huawei MA5616 supports GPON, 10G GPON or GE upstream CCUE transmission by using its control board and provides broadband and narrowband access services by using different service boards.

Working principles of the MA5616 chassis 

The working principles of Huawei DSLAM MA5616 chassis are as follows:

• The control board transmits services upstream and subtends device through subboards and manages service boards.
• The power board outputs DC power to the backplane and then the backplane transmits the power to the fan tray, service boards, and control board.
• The broadband or narrowband service board is connected to a user-side device by using a subscriber cable, and then the control board puts the user-side device through to the IP network. In this way, broadband or narrowband access service is provisioned to the user-side device.
• The fan monitoring board monitors the fan tray and transmits the monitoring signal to the control board through the backplane.

When the ODUK SPRING Protection Switching Is Performed by Running External Commands, If the OTN Tributary Board Is Not in Position, the Switching May Fail

Issue Description

When the ODUK SPRING protection switching is performed by running external commands, if the OTN Tributary board is not in position, the switching may fail. 

Alarm Information

Null 

Handling Process

If the OTN board for the westward or eastward services of the ODUK SPRING protection is not in position, performing the switching by running external commands is nonsense. If you really intend to perform the switching by running external commands, you must ensure that the OTN board for services in that direction is in position.  

Root Cause

In the network shown in the following figure, NE6 is the management node, and services are 
configured between NE2 and NE6. In addition, the OTN board of NE2 is not in position. 

Under normal conditions, the service flow, indicated by the red real line, is as shown in the figure. When NE6 starts a westward forced switching, NE2 switches from the IDLE page to the eastward switching page. The service flow, indicated by the blue dashed line, is as shown in the figure.
In the process of the switching, if the tributary board of NE2 is in position, the Huawei OTN signal on the protection link is stable and there are no abnormal alarms on the protection channel. But if the tributary board of NE2 is not in position, the OTN signal on the protection link needs to be regenerated by an NS2(OTN board according to certain Recommendations). The regeneration operation requires a certain period of time. The protection channel may detect abnormal alarms before the OTN signal regeneration is completed and immediately reports an SF alarm, which results in the failure of the forced switching.

Suggestions

Null