Developing history of Huawei optical transmission: 20 years of accumulations

Throughout the developing history of optical transmission, it is actually a process that bandwidth capacity constantly promoting and business efficiency continuous optimizing, while accompanied by a series of new problems and challenges and solutions generated.

With the rapid development of wireless data, home broadband and leased line services, bandwidth demand continuously rise,optical transmission experienced continuous evolution of technical solutions and network architecture (PDH, SDH, MSTP, WDM and OTN) - compared with PDH system, Huawei SDH not only enhanced capacity and but also improved network efficiency and operation and maintenance; with the development of network IP, Huawei SDH gradually evolve to MSTP platform; However, for the trunk line and urban core, the lack of capacity gradually highlighted, so the development of WDM is imperative.

In this process, Huawei adhere to customer-centric, and strive to go beyond, self-dependent innovation. From OTN stage initially to 100G, from super 100G to T-SDN commercial use globally, Huawei experienced 20 years of accumulations in optical transport field, from the "precedency" to "excellence."

Developing history of Huawei optical transmission: 20 years of accumulations

Throughout the developing history of optical transmission, it is actually a process that bandwidth capacity constantly promoting and business efficiency continuous optimizing, while accompanied by a series of new problems and challenges and solutions generated.

With the rapid development of wireless data, home broadband and leased line services, bandwidth demand continuously rise,optical transmission experienced continuous evolution of technical solutions and network architecture (PDH, SDH, MSTP, Huawei WDM and OTN) - compared with PDH system, Huawei SDH not only enhanced capacity and but also improved network efficiency and operation and maintenance; with the development of network IP, SDH gradually evolve to MSTP platform; However, for the trunk line and urban core, the lack of capacity gradually highlighted, so the development of WDM is imperative.

In this process, Huawei adhere to customer-centric, and strive to go beyond, self-dependent innovation. From OTN stage initially to 100G, from super 100G to T-SDN commercial use globally, Huawei experienced 20 years of accumulations in optical transport field, from the "precedency" to "excellence."

Top 10 optical transmission enterprises globally —Huawei ranked NO.4

Chinese optical telecommunication development and competitiveness forum 2014 was held in Beijing presently, and voted the top ten optical transmission globally. Huawei, as a optical transmission enterprise in China broke into the list and ranked NO.4.

‘Top 10 optical transmission enterprises worldwide in 2014.’ are from six countries: France, Japan, Sweden, the US, Finland and China. In the list, three enterprises come from China: Huawei, ZTE and Fenghuo communication. With Huawei OSN series, Huawei MSTP/SDH etc. products are sold to overseas countries enormously, Huawei is rising sharply in the forest of optical transmission industry. 

Huawei lead the fixed broadband development globally

From the trend of industrial development, there will be a new rigorous development stage in fixed broadband Huawei osn in the next three years. And investments that focused on fixed broadband will become the hotspot and central spot in ICT industry. First, 4K panel prices, 4K content production costs have declined significantly worldwide with the mature industry chain; Based on 4K video-based industrial development will greatly promote the fixed broadband industry development, the next generation of highly efficient video coding standard H.265 is nearly perfect. With LTE / 5G deployment, building a high-quality and high-performance LTE bearer network that protect the user’s extreme experience is operators’ important demands currently, which will promote the bearer transmission network construction boom. At the same time, with the development of big data, data center, cloud computing and other innovative technologies, the development of global fixed broadband technologies will be stimulated rapidly. 

Huawei, as the leader of fixed transport network broadband, hopes to have a joint cooperations with industry chains, and build a win-win fixed broadband ecology together, and promote standard and ordered development. 

Problem with the iManager U2000/N2000 BMS/T2000's Version combination

Problem described: The U2000 V100R002C01, U2000 V100R003C00, U2000 V100R005C00, N2000 BMS V200R012C03, N2000 BMS V200R012C05, T2000 V200R006C03, T2000 V200R007C03 in Huawei osn equipments have been in service for a long time. The latest patches provided by Huawei resolve many major issues.

1. For the U2000 V100R002C01, the following issues occur on the live network:
− The U2000 client fails to be upgraded using the client automatic upgrade (CAU) tool.
− The number of consumed licenses doubles, which is abnormal.
− Massive data is stored in the FTP directory, resulting in insufficient disk space.
− Certain NE functions are unavailable if the NE licenses are enabled.
− Starting routers (including switches) during the polling period sometimes causes a core dump on the NE management process.
− Taking NEs offline sometimes causes a core dump on the NE management process.
− Discrete cross-connections are generated after ASON rerouting.
− The database cannot be restored.
2. For the U2000 V100R003C00, the following issues occur on the live network:
− Users cannot log in to the U2000 when electronic label export is in progress.
− The U2000 shuts down unexpectedly.
− A large number of NEs are disconnected intermittently.
− Automatically discovered ONTs cannot be confirmed.
− Incorrect optical module information is displayed for more than 5000 NEs.
− Services are interrupted after a user deletes tunnels that carry MS-PWs.
− Services are interrupted after a user deletes server trails.
− The database encounters exceptions because of overlong SQL statements.
3. For the U2000 V100R005C00, the following issues occur on the live network:
− A core dump occurs on the performance management system (PMS) process.
− Ethernet port aliases disappear after synchronization.

− When the U2000 manages a datacom NE whose name contains some special characters, the datacom NE panel becomes blank.
− Services are interrupted after a user deletes the tunnels that carry MS-PWs.
− E2E WDM trails fail to be created.
− Nodes fail to be added using the trail cutover automated tool (TCAT).
4. For the N2000 BMS V200R012C03, the following issues occur on the live network:
− The client exits unexpectedly.
− NEs are unreachable.
− The value-added service (VAS) profile cannot be modified using TL1 commands.
5. For the N2000 BMS V200R012C05, the following issues occur on the live network:
− The VAS profile sometimes fails to be applied to ONTs.
− MDUs cannot go online.
− The configuration script management function cannot be used.
6. For the T2000 V200R006C03, the following issues occur on the live network:
− The element management system (EMS) process restarts due to daylight saving time (DST) switching.
− Deleting a service makes other services interrupted.
− Cross-connections cannot be created due to cross-connection ID conflicts.
7. For the T2000 V200R007C03, the following issues occur on the live network:
− A core dump occurs on the NE management process due to subnetwork connection protection (SNCP) switching.
− The ASON-SDH Huawei trail licenses are consumed more than they should.
[Workarounds]
No workarounds can be provided for the above-mentioned issues. Version incorporation must be carried out.
[Preventive Measures]
Related representative offices submit rectification applications to incorporate the involved versions.
The following table lists the versions before and after incorporation.

Summary:
The delivery and maintenance of NMS products face many challenges, and NMSs run in a complex environment. NMS versions need to be incorporated to eliminate NMS running risks, prevent major accidents, improve customer experience, and enhance customer satisfaction.

[Rectification Instructions]
1. Related representative offices submit applications at Batch Replacement Workflow. For details, see the attachment.

2. During the NMS upgrade or patch installation, the NMS is unavailable but services keep running on NEs. Therefore, in a single-server system, an NMS must be deployed for temporary network monitoring.
3. Engineers must read through the upgrade guide or patch installation guide before performing the NMS upgrade or patch installation. In addition, engineers must strictly follow the guides.
4. For NMSs in the EOS state, engineers in representative offices and customers must upgrade the software or hardware according to Overview of Huawei Network OSS Service Product and Version Lifecycle. These NMSs are not included in this version incorporation.

Only license for Huawei transmission equipments can configure the equipments?

For this question, many customers are confused, To configure a Huawei osn equipment, license is important but not essential. No license won't block you to configure Huawei equipment. Huawei U2000 LCT software, which is used for Huawei transmission equipment configuration, and no License control. Just install the U2000 LCT on your server or if you have a high configured lap-top, you can also install it on it, for lap-top will more convenient.