#osn8800

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Configuring 10G LAN & 10G WAN in DWDM network

I want to share some information about configuring 10G services in differenet forms in DWDM network.

1.What are the differences between 10GE LAN and 10GE WAN services

According to IEEE 802.3ae,  compared with 10GE LAN services,10GE WAN services involve an additional   process in which signals are encapsulated into standard SDH/SONET frames. In other words, 10GE WAN services are processed in a similar way as how STM-64 services are processed in a   WDM/OTN system.The most direct difference between 10GE LAN and 10GE WAN services is that they have different signal rates.

2.How do we configure 10GE LAN and 10GE WAN services?

Let's take a look at the steps for configuring 10GE WAN services.

3 - About the 10G LAN there are 2 types of  port mapping ((bit transparent mapping and MAC transparent mapping))

What is the difference between bit transparent mapping and MAC transparent mapping?

In bit transparent mapping (11.1G) mode, the OTU frame frequency is increased to ensure the encoding gain and error correction capability of the FEC function.Therefore, the service rate is OTU2e,which is higher than OTU2. This mapping mode is recommended for interconnection between Huawei devices.

In MAC transparent mapping (10.7G) mode, the GFP-F encapsulation mode is used to map 10GE MAC frames into OTU2 signals.

This mapping mode provides a standard service rate and therefore facilitates interconnection between Huawei devices and peer devices.

I hope that will be be useful to all.

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How to Activate WDM Trails on OSN8800 Equipment

In this article, it is about activating WDM Trails on Huawei OSN8800 Equipment

For the unactivated trail, activate the trail and enable the service on the trail according to the trail data saved on the NMS.

Prerequisites

You are an NMS user with "Operator Group" privilege or higher.

The Client, ODUk, OTUk, or OCh trail has been searched or created.

Tools, Equipment, and Materials

U2000

Procedure

Choose Service > WDM Trail > Manage WDM Trail from the Main Menu.

The Set Trail Browse Filter Criteria dialog box is displayed. Set the filter criteria and view the desired trails in the trail list. NOTE:

Select one or more unactivated trails, right-click and choose Active from the shortcut menu. NOTE:For an OCh trail, you can choose Active or Active(with Attenuation Restored) to activate the trail.

In the displayed Confirm dialog box, click Yes. The displayed Result dialog box indicates that the operation is successful.

Click Close.

If you need to filter all the trails, click Filter All.

If you need to add to the list more trails that match the requirement, click Incremental Filter.

To search the existing trails using new filter criteria, click Secondary Filter.

Active indicates that the optical attenuation is the default one after the OCh trail is activated.

Active (with Attenuation Restored) indicates that the modifiable optical attenuation is the one set on the NMS before the trail is activated on an activated OCh trail.

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Background Information (Configuring Extended ECC in Specified Mode) of Huawei OSN 8800

The extended ECC Ethernet ports vary depending on the NG WDM series. The details are as follows:

OptiX OSN 8800 T64/T32 achieves extended ECC communication through the Ethernet port (NM_ETH) on the EFI1 and EFI2 board.

OptiX OSN 8800 T16 achieves extended ECC communication through the Ethernet port (NM_ETH) on the EFI board.

OptiX OSN 6800 achieves extended ECC communication through the Ethernet port (NM_ETH) on the AUX board.

OptiX OSN 3800 achieves extended ECC communication through the Ethernet port (NM_ETH) on the AUX board

The extended ECC in specified mode can be set on site or remotely. When setting the ECC extended mode remotely, strictly comply with the following sequence: set the farthest NE without the OSC first, and then the NE with the OSC. Normally, the NE with the OSC is configured as the server. In the case of the NE without the OSC, the communication between the U2000 and the NE stops after the ECC extended mode is set remotely. The communication between the U2000 and the NE is restored automatically after the setting on the NE with the OSC at the station is complete.

When configuring the extended ECC in specified mode, configure one or multiple NEs as the servers and other NEs as the clients. One server NE can have a maximum of seven client NEs. If the number of client NEs managed by a server NE exceeds eight, select a client NE as the server NE for the remaining client NEs. In this case, the server NE functions as a client and a server at the same time. The rest may be deduced by analogy. The port numbers of the server NEs must be different.

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How does Huawei OSN8800 Support Remote Maintenance

This topic provides remote maintenance overview.

The Huawei optical transmission OSN8800 equipment series supports remote maintenance. A remote computer (remote end) can connect to an on-site U2000 server (local end) through a public switched telephone network (PSTN) or through the Internet. The remote computer then can perform maintenance to the equipment.

The below picture is a networking diagram illustrating remote maintenance. A modem is installed at the remote maintenance terminal and on the U2000 server, and dial-up programs are installed at each end. These operations are performed during the U2000 installation.

During remote maintenance, the U2000 server needs to cooperate with the remote end to perform the following operations on OSN8800 :

Enable the remote maintenance user.

Establish the remote maintenance connection.

More related:

What’s the ODU1 tributary-line mode (cascading)

Installing the U2000 Client on Windows

Import or Update U2000 License

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How does the OptiX OSN 8800 use to multiplex and map ODUk signals into OTUk signals

Multiplexing and Mapping ODUk Signals into OTUk Signals

This section describes the structure that The OptiX OSN 8800 uses to multiplex and map ODUk signals into OTUk signals. After the E/O conversion, the signals are sent to the WDM side.

The OptiX OSN 8800 can multiplex and map client signals into ODUk (k= 0, 1, 2, 2e, 3, 3e, 4, flex) signals and produce OTUk (k=1, 2, 2e, 3, 3e, 4) signals on the WDM side for line transmission. The below picture shows the ODUk multiplexing and mapping structure that the OptiX OSN 8800 supports.

More related:

How the OptiX OSN 8800 the Maps Client Services into ODUk Signals

Huawei OTN

Huawei OSN8800 T16

Huawei OSN8800 T32

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The LDGF2 Board on the OptiX OSN 1800 Reports an OTU1_LOF Alarm

An LDGF2 board on an OptiX OSN 1800 reports an OTU1_LOF alarm because the board at the opposite station transmits colorless light.

Product

OptiX OSN 1800,  OSN6800,  OSN8800

Fault Type

Optical Transponder Unit

Service Interruption

OTU1_LOF

Symptom

On a Metro WDM network, the OptiX OSN 1800 is deployed. Two stations are connected through the LDGF2 and LDGF boards, and the intermediate station is a regeneration station and uses the LWX2 board. The optical path between the LDGF board at upstream station A and the LWX2 board at regeneration station C is blocked. The other side of the LWX2 board transmits light forcibly and the LDGF2 board at downstream station B reports an OTU1_LOF alarm.

Cause Analysis

The LWX2 board at regeneration station C reports an R_LOS alarm and the LDGF2 board at downstream station B reports an OTU1_LOF alarm.

The corresponding board at upstream station A transmits colorless light.

The input optical power of station B is not within the permitted range.

The FEC type setting is incorrect.

The fiber transmission line is malfunctioning.

Procedure

Use an optical power meter to measure the output optical power from the LWX2 board to downstream station B. The optical power is within the permitted range. Therefore, cause 2 is ruled out.

On the NMS, query FEC Type and the setting is correct.

Check where the alarm is generated. The location information of the alarm is 1-LDGF2-201(LP1/LP1)-OUT1:1. This shows that the alarm is reported by the IN1 port on the LDGF2 board in slot 1 of station B. Therefore, the optical line between upstream station A and regeneration station C may be blocked and this causes an R_LOS alarm on the LWX2 board at station C. Because Automatic Laser Shutdown of the LWX2 board at the regeneration station is set to Disabled, and Laser Status is set to ON, the LWX2 board transmits colorless light to downstream station B. Therefore, an OTU1_LOF alarm is reported.

Repair the optical line between upstream station A and regeneration station C. Then the alarm is cleared.

Result

The problem is resolved.

Reference Information

When an OTU1_LOF alarm is reported on the NMS, check for the location information in the alarm to determine the port that reports the alarm. For the LDGF2 board, 201(LP1/LP1) indicates the IN1 and IN2 optical ports, and 202(LP2/LP2) indicates the IN3 and IN4 optical ports. The digit 1 at the end of the location information indicates the IN1 or IN3 optical port. The digit 2 indicates the IN2 or IN4 optical port. For example, 3-LDGF2-202(LP2/LP2)-OUT1:2 indicates the IN4 optical port on the LDGF2 board in slot 3. The location information of other boards can be deduced by analogy.

If the receive optical power is within the permitted range, determine whether the upstream station transmits colorless light. For the boards with the FEC function enabled, check that the FEC settings are correct.

For the OTU boards on OptiX OSN 1800, the default and recommended value of Automatic Laser Shutdown is Enabled.

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When the OptiX OSN 8800 Tributary SNCP Defect on TN54THA and TN53TSXL

Summary: 

The NE software V100R008C10SPC200 does not support hardware tributary subnetwork connection protection (SNCP) on the TN54THA and TN53TSXL boards. To be specific, a TN54THA or TN53TSXL board equipped with hardware tributary SNCP will insert an incorrect s-code to the cross-connect board on the NE. As a result, the cross-connect board will report a HARD_BAD alarm, affecting services on the NE.

Product Line: Transport network product line    Product Family: WDM products

Product Model: OptiX OSN 8800 V1R008C10SPC200, OSN 6800

[Problem Description]

Trigger conditions:

The NE software version is V100R008C10SPC200.

Hardware tributary SNCP has been configured on RX/TX ports 9–16 of a TN54THA board or the RX/TX port of a TN53TSXL board on the NE.

Hardware tributary SNCP is newly configured on RX/TX ports 9–16 of a TN54THA board or the RX/TX port of a TN53TSXL board on the NE.

The cross-connect board on the NE is TN16UXCM, TN52UXCH, TN52UXCM, TNK2USXH, or TNK2UXCT.

During NE expansion, the cross-connect boards on the NE are upgraded from TN16XCH, TN52XCH, TN52XCH02, TNK2SXH, TNK2XCT, TNK4SXM, TNK4SXM, or TNK4XCT to TN16UXCM, TN52UXCH, TN52UXCM, TNK2USXH, or TNK2UXCT.

When conditions 1, 2, and 5, or conditions 1, 3, and 4 are met, the NE will report a HARD_BAD alarm.

Symptom:

The NE reports a HARD_BAD alarm and services on the NE are affected.

Identification method:

Conditions 1, 2, and 5, or conditions 1, 3, and 4 are met, and the NE reports a HARD_BAD alarm. The alarm parameters are as follows: 0xf,0x5,0xa,0xff,0xff,0xff.

 [Root Cause]

The OptiX OSN 8800 V100R008C10SPC200 does not support hardware tributary SNCP on the TN54THA and TN53TSXL boards. If hardware tributary SNCP is configured on a TN54THA or TN53TSXL board, array violation will occur on the board, causing the board to insert an incorrect s-code to the cross-connect board on the NE. As a result, bit changes occur on the chip page of the cross-connect board. Consequently, the cross-connect board reports a HARD_BAD alarm.

 [Impact and Risk]

The network expansion is affected. When common cross-connect boards are upgraded to U-series cross-connect boards, the HARD_BAD alarm will be reported, and the tributary SNCP services on the TN54THA or TN53TSXL boards will be interrupted.

If U-series cross-connect boards are already used, the HARD_BAD alarm will be reported when tributary SNCP services are created. As a result, the new services cannot be provisioned but the existing services are not affected.

The existing tributary SNCP services are not affected in non-expansion scenarios.

[Measures and Solutions]

Recovery measures:

In expansion scenarios, use the NE software V100R008C10SPC300 instead of V100R008C10SPC200.

If tributary SNCP services fail to be created on the NE software V100R008C10SPC200, upgrade the NE software version to V100R008C10SPC300 or later.

Workarounds:

If tributary SNCP services are configured for the TN54THA or TN53TSXL board on an NE, use NE software V100R008C10SPC300 or later instead of V100R008C10SPC200.

Preventive measures:

If tributary SNCP services are configured for the TN54THA or TN53TSXL board on an NE, use NE software V100R008C10SPC300 or later before capacity expansion.

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Failure in Configuring the SC2 as an Auxiliary Detection Board in the IPA Protection Group

The SC2 and the OAU boards are configured on different subracks. As a result, the SC2 board cannot be configured as an auxiliary detection board for the IPA protection group.

Product

OptiX BWS 1600G, OSN 6800, OSN 8800

Fault Type

Intelligent Power Adjustment (IPA)

Symptom

When configuring the IPA function, the user attempts to configure the SC2 board as an auxiliary detection board on the T2000 but fails.

Cause Analysis

The site that requires an auxiliary detection board is a back-to-back OTM site. The site has only one SC2 board. In addition, the SC2 board and the OAU board forming the IPA protection group are installed in different subracks.

This fails to follow the configuration principle for the IPA protection. That is, all functional boards related to the IPA function except the Raman amplifier board must be installed in the same subrack. The Raman amplifier board can be installed in another NE when inter-subrack communication is available.

Procedure

Install the existing SC2 board or add an SC2 board in the subrack where the IPA function need to be configured. If an SC2 board is added, it must be connected to the existing SC2 board.

Reference Information

None.