Huawei MA5800 GPON Board H901GPHF

H901GPHF is a 16 port GPON interface card of Huawei NG OLT, provides GPON service access from ONT. GPHF can maximum access 16*128 GPON subscribers. 

• Apply to Huawei MA5800 X7, X15, X17 NG OLT system
• Support split ration 1:128
• Transmit Speed: 2.49Gbit/s, Receive Speed: 1.24Gbit/s
• Interface Type: SC/PC
• Max Transmit Distance: 20KM
• Transmit Wavelength: 1490nm, Receive Wavelength: 1310nm
• Standards Compliance: ITU-T G.984.1, ITU-T G.984.2, ITU-T G.984.3, ITU-T G.984.4
• C+ SFP Module Optical Power: 3 dBm~7 dBm, Receiver Sensitivity: -32 dBm
• B+ SFP Module Optical Power: 1.5 dBm~5 dBm, Receiver Sensitivity: -28 dBm

How to check of Battery on Huawei MA5683T?

It is recommended that you check the status of Huawei MA5683T battery once every year. This operation ensures that the power supply system can automatically switch to the battery in the case that the AC power supply is cut off. In this manner, the running of services is not affected.

Tools, Instruments, and Materials

• An adjustable wrench: Used to fasten screws.
• Screwdriver: Is used to unscrew the battery covering piece.

Reference Standard

• The shell of the battery is clean and intact.
• The shell of the battery is intact and free of leakage or distortion. There is no acid fume around the terminals or the safety valve.
• The joints between batteries are firm and free of corrosion.
• The proper spacing between batteries should be at least 10 mm.
• The terminals are not distorted or damaged. Damaged terminals will cause high contact resistance or cause cracks in the battery shell.
• The working temperature of the battery ranges from -20°C to 50°C.
• After the mains supply is disconnected, the cabinet switches to the battery and the power supply is normal.

Procedure

1. Check whether the cleanness of the battery shell, spacing between batteries, connection between the battery terminal and the battery, and ambient temperature meet the requirement in "Reference Standard".
2. If the batteries are faulty, handle the fault according to "Exception Handling" until the fault is rectified.

Exception Handling

• If the shell of the battery is dirty, clean the shell immediately.
• If the shell of the battery leaks or is distorted, replace the battery immediately.
• If the terminal of the battery is distorted or damaged, replace the battery immediately.
• If the spacing between batteries is less than 10 mm, adjust it to a proper spacing.
• If the joints between batteries turn loose or are corroded, fasten or replace the joints according to actual situations.
• If the working temperature of the battery is not within the range of -20°C-50°C, locate the cause that results in the over-temperature of the battery. Then, rectify the fault.
• If the floating charging voltage of the battery is abnormal, it is recommended that you replace the faulty battery.

If you have other question like Huawei ONT OLT configuration, U2000 NMS, you can contact supports@thunder-link.com

What Are the Precautions for Deploying Multicast VLAN Replication on a Ring Network?

A multicast VLAN is the user VLAN of itself by default, so you do not need to run the
multicast user-vlan command.

When configuring multicast VLAN replication on the S1720GFR, Huawei S2700, S5700S-LI (except
S5700S-28X-LI-AC and S5700S-52X-LI-AC), or S5700-LI, pay attention to the following

constraints:
A user-side interface can be added to only one user VLAN. If the interface is added to
multiple user VLANs, the user VLAN where multicast entries are generated first takes
effect.
The user-side interface also needs to be added to the multicast VLAN in the same mode
as it is added to the user VLAN. For example, if the user-side interface is added to the
user VLAN in untagged mode, it must be added to the multicast VLAN in untagged
mode.

To prevent broadcast of unknown multicast packets, enable the switch to drop unknown
multicast packets. On the S2700SI or S2700EI, run the multicast drop-unknown in the
system view to enable this function. On the S1720, S2720, Huawei S5720-LI, S5720S-LI,
S5700S-LI or S5700-LI, run the multicast drop-unknown in the VLAN view to enable
this function.

Huawei 10G line processing board NS2

Available functional versions of the NS2 board are TN11, TN12, TN52, and TN53, can apply to Huawei OSN6800 OSN8800 also OSN3800.

When the TN52NS2T04, TN52NS2T05, TN52NS2T06, TN52NS201M01, or TN52NS201M02 board is used in the OptiX OSN 3800 chassis, the TN23SCC board must be used.

a: If there is a substitution relationship between two boards and one of the boards is used to replace the other board, the device initial version supported by the replaced board takes effect. For example, when you use Huawei TN53NS2 to replace TN52NS2T02 in 8800, TN53NS2 can be supported by V100R002C00.

• OptiX OSN 6800: The TN11NS2 supports cross-connection of paired slots while the TN12NS2/TN52NS2/TN53NS2 does not.
• OptiX OSN 3800: The TN11NS2 supports the cross-connection of ODU1 signals between any slots of the four-slot mesh group. The TN12NS2/TN52NS2/TN53NS2 supports the cross-connection of ODU1 signals between any two boards in the non-paired slots of the four-slot mesh group.
• When TN52NS2T05/TN52NS2T06/TN52NS201M01/TN52NS201M02 is created as 52NS2(STND) on the U2000, FEC/AFEC-2 is supported. When TN52NS2T05/TN52NS2T06/TN52NS201M01/TN52NS201M02 is created as 12NS2 on the U2000, FEC/AFEC is supported.
• In a version earlier than V100R007C02, TN52NS2T05/TN52NS2T06/TN52NS201M01/TN52NS201M02 can be created only as 12NS2 on the U2000.

How to Do If the Root Password of a Device Is Lost?

After using the device, the user may change the default user name and password. If you forget the password of user root, perform the following methods. Method 2 is recommended.

• Method 1: Load the empty database matched the device again through DoS. After restarting the device, log in to the system by using the default root password admin (Huawei OLT) or mduadmin (MDU). This method will lead to loss of data configurations and the user needs to configure the data again.
• Method 2: Modify the configuration file using the U2000.
  1. On the U2000, choose Administration > NE Security Management > LCT User Management from the main menu.
  2. On the LCT User Management tab page, select NE User and then Device Type. Select the desired device name from the Device Name column and user name from the Name column. In the displayed dialog box, choose Set Password to set the new password.
  This method does not require a device restart or services are not interrupted.
• Method 3: If the device is managed by the NMS, modify the configuration file on the NMS as follows:
  1. Back up the configuration file of the device on the NMS.
  2. Open the configuration file and find out the record of changing the root password, as shown in boldface in the following display.

     [MA5600V800R005: 6833]                                                          
     #                                                                               
     [global-config]                                                                 
     
       <global-config>                                                               
     
      terminal user name buildrun_new lww231 *[)!AAYS*Y&aU86K;V-a@AUA!!* 1 2009:06:04
     
     :17:07:25 2009:06:04:17:07:25 root 2 6 -----                                    
     
      terminal user name buildrun_new bmsmpls *[4P]`OUIa%=[G]0U3=OWJY1!!* 0 2009:06: 
     
     08:15:01:02 2009:06:08:15:01:02 root 3 65535 -----                              
     
     adsl mode switch-to ADSL                                                       
     
     vdsl mode switch-to normal       
     
  3. Delete the boldface part and then save the configuration file.
  4. Load the modified configuration file to the system through the NMS and activate the configuration file.
  5. Log in to the device by using the default root password admin (OLT like Huawei MA5608T) or mduadmin (MDU).

Client-Side Pluggable Optical Module type on Huawei TN52TOM board

Huawei OSN 6800 OSN8800 8xmulti-rate ports service processing board TN52TOM supports below kindly of optical module on the client-side 

10 Gbit/s Multirate-10 km-SFP+

10 Gbit/s Multirate-40 km-SFP+

10 Gbit/s Multirate-80 km-SFP+

10GBASE-ZR-80km-SFP+

10GBASE-ER/EW-40km-SFP+

10GBASE-SR-0.3km-SFP+

10GBASE-LR-10km-SFP+

11.3 Gbit/s Multirate-TX1270/RX1330nm-10km-SFP+

11.3 Gbit/s Multirate-TX1330/RX1270nm-10km-SFP+

How to Train the ADSL/VDSL Modem Connected to the MA5652G to Be a VDSL Modem?

The following methods describe how to train the ADSL/VDSL modem to be a VDSL modem.

• Method 1: Select the VDSL-related protocol G.993.2 (Annex A/B/C) for transmission mode in the VDSL line profile.
• Method 2: Select the PTM mode for data path mode in the VDSL channel profile.

In the case of method 1, if the channel profile is set to both, the ADSL/VDSL modem may be trained to be an ADSL mode when unstable factors such as line environment noise exist. Therefore, if the ADSL/VDSL modem is connected to the MA5652G, method 2 is recommended.

If the modem connected to the MA5652G is not an ADSL/VDSL modem, in configuring the line profile and channel profile, set transmission mode to all and data path mode to both.

If any other questions about Huawei DSLAM, Huawei xDSLservice board, you can contact supports@thunder-link.com.

Huawei AC/DC converter ETP4830-A1 Introduction

Huawei ETP4830-A1 is a box-type power system that supplies power for -48 V DC

communications equipment. It uses 15 A rectifiers and provides a maximum output current of 30 A; Apply for Huawei OLT, Huawei OSN 3500 OSN 6800&8800, Huawei Router and Huawei Switch and can be can be embedded in 19-inch rack or cabinet or other scenarios.

Model Number Description

• Supports a wide voltage range of 85 V AC to 300 V AC.
• Provides comprehensive battery management.
• The SMU01A communicates with Huawei Network Ecosystem (NetEco) and third-party
• element management systems (EMSs) over various security protocols, such as the
• Simple Network Management Protocol (SNMP) and Hypertext Transfer Protocol Secure
• (HTTPS), featuring flexible networking. It provides WebUI and implements remote
• unattended management.
• The SMU01B connects to the U2000 over Huawei master/slave protocols.
• Displays information on a liquid crystal display (LCD) and provides buttons for
• operations.
• Supports electronic labels.
• Rectifiers and the site monitoring unit (SMU) are hot-swappable.
• Allows high-efficiency and standard-efficiency rectifiers with the same capacity to
• coexist.
• The rectifier power factor is 0.99.

Hardware Information of Huawei S2700&S5700&S6700 switch

Figure 1 shows the logical structure of hardware modules in the Huawei S2700&S5700&S6700 switch.

Hardware modules of the S2700&S5700&S6700 refer to the interface card, Switch Control Unit (SCU), power supply, and fan.

Figure 1 Logical structure of hardware modules 

SCU

The SCU is built in the S2700&S5700&S6700. Each switch has one SCU.

The SCU provides packet switching and device management. It integrates the main control module, switching module, and interface module.

Main Control Module

The main control module provides the following functions:

• Processes protocol packets.
• Manages the system and monitors the system performance according to instructions of the user, and reports the device running status to the user.
• Monitors and maintains the interface module and switching module.

Switching Module

The switching module (switching fabric) is responsible for packet exchange, multicast replication, QoS scheduling, and access control on the interface module of the SCU.

The switching module uses high-performance chips to provide rate-speed forwarding and fast switching of data with different priorities.

Interface Module

The interface module provides Ethernet interfaces for Ethernet service transmission.

Cards

Huawei S5700 supports service and stack cards. Service cards allow for flexible networking and provide cost-effective customized solutions. Stack cards connect multiple switches into one logical switch, which implements on-demand expansion, reduces costs, simplifies management, and improves network reliability.

Huawei S6700 switch supports service cards. Service cards allow for flexible networking and provide cost-effective customized solutions.

Dedicated Stack Card with 2*QSFP+ card used on Huawei S5720-EI switch

Huawei ES5D21VST000 can be installed in a stack card slot on Huawei S5720-EI Switch Switch, provides two QSFP+ optical ports for stack connection.

• Huawei ES5D21VST000 card
• 2 QSFP+ ports
• Apply to S5720-EI Switch
• Supports hot swap
• Physical size: 100 mm x 208 mm x 40 mm
• Weight: 0.92 kg

Client-Side Pluggable Optical Modules supported on Huawei DWDM Transponder TN13LSX?

Huawei DWDM TN13LSX transponder board can support below optical modules:

10 Gbit/s Multirate-10 km-XFP
10 Gbit/s Multirate-40 km-XFP
10 Gbit/s Multirate-80 km-XFP
10 Gbit/s Single Rate -0.3 km-XFP
800 ps/nm-C Band (Odd & Even Wavelengths)-Fixed Wavelength-NRZ-PIN-XFP

What kind of Client Interfaces on Huawei OSN 8800 T32?

Huawei OSN 8800 T32 client interface types

STM-1/4/16/64/256

OC-3/12/48/192/768

OTU1/OTU2/OTU3/OTU4

Any service at rates ranging from 100 Mbit/s to 100 Gbit/s

FE/GE/10 GE/40 GE/100 GE

ESCON/FICON/FICONExpress/FC100/FC200/FC400/FC1200/HDTV/ DVB-ASI/DVB-SDI/ SDI/FDDI

Fiber

G.652, G.653, G.654, G.655

Connector

SFP/XFP, LC/PC

How to configure the Internet Access Service on Huawei MA5800?

Huawei MA5800 is connected to the remote ONT through a GPON port to provide users with high-speed Internet access services.

Prerequisites

• The OLT is connected to the BRAS.
• Related configurations are performed on the BRAS according to the authentication and accounting requirements for dialup users.
• Huawei GPON ONT has been added to the OLT MA5800 X15 X17 X7. 
• The VLAN of the LAN switch port connected to the OLT is consistent with the upstream VLAN of the OLT.

Configure the OLT

• 1. Configure a traffic profile.
     Run the display traffic table ip command to query the existing traffic profiles in the system. If the traffic profiles existing in the system do not meet the requirements, you need to run the traffic table ip command to add a traffic profile.
     Set the profile ID to ftth_hsi, the CIR to 4 Mbit/s, and the priority to 0. In addition, configure the scheduling mode so that packets are scheduled according to their priorities.

     huawei(config)#traffic table ip name ftth_hsi cir 4096 priority 0 priority-policy local-setting
  2. Configure the mapping between a GEM port and a VLAN.
     The service flow of C-VLAN 1001 is mapped to GEM port 14 in the ONT line profile.

     huawei(config)#ont-lineprofile gpon profile-name ftth
     huawei(config-gpon-lineprofile-1)#gem mapping 14 0 vlan 1001
     huawei(config-gpon-lineprofile-1)#commit  
     huawei(config-gpon-lineprofile-1)#quit
  3. Configure the VLAN of the Ethernet port on the ONT.
     If the ONT is connected to the PC through Ethernet port 1, add Ethernet port 1 to VLAN 1001 in the ONT service profile.

     huawei(config)#ont-srvprofile gpon profile-name ftth
     huawei(config-gpon-srvprofile-1)#port vlan eth 1 1001
     huawei(config-gpon-srvprofile-1)#commit
     huawei(config-gpon-srvprofile-1)#quit
  4. Configure the native VLAN of the ONT port.
     Set the native VLAN ID of Ethernet port 1 to 1001.

     huawei(config)#interface gpon 0/1
     huawei(config-if-gpon-0/1)#ont port native-vlan 0 1 eth 1 vlan 1001
     huawei(config-if-gpon-0/1)#ont port native-vlan 0 2 eth 1 vlan 1001
     huawei(config-if-gpon-0/1)#quit
  5. Create an Internet access service VLAN and add an upstream port to it.
     Add upstream port 0/9/0 to VLAN 100.

     huawei(config)#vlan 100 smart
     huawei(config)#vlan attrib 100 stacking
     huawei(config)#port vlan 100 0/9 0
  6. Create service flows.
     Set the service VLAN to 100, GEM port ID to 14, and user VLAN to 1001. Use traffic profile ftth_hsi.

     huawei(config)#service-port vlan 100 gpon 0/1/0 ont 1 gemport 14 multi-service
     user-vlan 1001 tag-transform translate-and-add inner-vlan 1010 inbound traffic-table name 
     ftth_hsi outbound traffic-table name ftth_hsi
     huawei(config)#service-port vlan 100 gpon 0/1/0 ont 2 gemport 14 multi-service 
     user-vlan 1001 tag-transform translate-and-add inner-vlan 1011 inbound traffic-table name 
     ftth_hsi outbound traffic-table name ftth_hsi
  7. Save the data.

     huawei(config)#save

• The ONT does not need to be configured.

How to Prevent Users from Using Unauthorized Static IP Addresses to Access Huawei S5720 switch?

You can configure Dynamic Host Control Protocol (DHCP) snooping on Huawei S5720 switch to prevent users from using unauthorized static IP addresses. DHCP
snooping checks user packets against the IP+MAC+port binding table and discards the
packets that do not match the binding table. After the DHCP snooping is configured, only the
user whose IP addresses and MAC addresses match the binding table and the user that obtain
IP addresses by using DHCP can access the switch. For example, to allow only the user
whose IP address is 10.1.1.2 and MAC address is 001c-2309-9aa7 to connect to Ethernet0/0/1
of the switch, perform the following steps:
1. Configure DHCP snooping on the switch.
# Enable DHCP snooping globally.
[HUAWEI] dhcp snooping enable
# Create VLAN and add the user-side interface to the VLAN.
[HUAWEI] vlan 100
[HUAWEI-vlan100] quit
[HUAWEI] interface ethernet 0/0/1
[HUAWEI-Ethernet0/0/1] port default vlan 100
[HUAWEI-Ethernet0/0/1] quit
# Enable DHCP snooping in the VLAN.
[HUAWEI] vlan 100
[HUAWEI-vlan100] dhcp snooping enable
2. Configure the packet checking function on the user-side interface.
[HUAWEI] interface ethernet 0/0/1
[HUAWEI-Ethernet0/0/1] arp anti-attack check user-bind enable
[HUAWEI-Ethernet0/0/1] ip source check user-bind enable
[HUAWEI-Ethernet0/0/1] quit
3. Configure a static binding entry.
[HUAWEI] user-bind static ip-address 10.1.1.2 mac-address 001c-2309-9aa7
interface ethernet 0/0/1
NOTE
Static DHCP snooping binding entries are required only for users that use static IP addresses. If all users
use DHCP to obtain IP addresses, you do not need to configure static DHCP snooping binding entries.

How should I do when Traffic Policy Failed in Huawei S6720 Switch?

Issue Description

Customer feedback that the traffic policy apply fail in Huawei S6720-54C-EI-48S-AC 200R009C00SPC500,And want to know the reason.

Alarm Information

display traffic-policy applied-record

-------------------------------------------------

  Policy Name:   af1

  Policy Index:  0

     Classifier:match-any     Behavior:af1

-------------------------------------------------

 interface XGigabitEthernet0/0/2.1709

    traffic-policy af1 inbound 

      slot 0    :  fail

 interface XGigabitEthernet0/0/2.3173

    traffic-policy af1 inbound 

      slot 0    :  fail

 interface XGigabitEthernet0/0/2.3870

    traffic-policy af1 inbound 

      slot 0    :  fail

 system

    traffic-policy af1 global inbound slot 0

      slot 0    :  success

-------------------------------------------------

  Policy total applied times: 4.

#

Handling Process

Step 1 check the traffic policy configuration as follow:

traffic behavior af1
 remark 8021p 1
#
traffic classifier match-any operator or
 if-match any
#
traffic policy af1 match-order config
 classifier match-any behavior af1
#

Step 2 check the port configuration as follow:

interface XGigabitEthernet0/0/2.1709
 mtu 1600
 qinq mapping vid 1710 map-vlan vid 1709
 traffic-policy af1 inbound
 mpls l2vc 10.3.1.4 152 tunnel-policy T1
#
interface XGigabitEthernet0/0/2.3173
 mtu 1600
 qinq mapping vid 1711 map-vlan vid 3173
 traffic-policy af1 inbound
 mpls l2vc 10.3.1.4 156 tunnel-policy T2
#
interface XGigabitEthernet0/0/2.3870
 mtu 1600
 qinq mapping vid 1712 map-vlan vid 3870
 traffic-policy af1 inbound
 mpls l2vc 10.3.1.4 158 tunnel-policy T3
#

Root Cause

The traffic behavior Remark 8021p and qinq mapping vid 1710 map-vlan vid 1709 conflict,It cause the fail.

Solution

The traffic behavior Remark 8021p and qinq mapping vid 1710 map-vlan vid 1709 both opreation for vlan, So it will conflict and cause the fail

So we suggest customer change the traffic behavior for example remark dscp or others behavior

Suggestions

The conflict operation may cause the traffic policy fail.Before configuration suggest check our production document there have the detail limit description.

What is the System Architecture of Huawei GPON OLT?

Huawei MA5608T/MA5603T/MA5800T uses the system architecture containing three modules: M1, M2, and M3.

• The M1 service port module provides various service access ports, such as PON, P2P, POTS, and xDSL service ports.
• The M2 core processing module implements CPU processing, Ethernet switching, and service processing.
• The M3 uplink port module transmits service flows upstream to network-side devices.

Figure 1 System architecture

In the preceding figure:

• The M1 service port module and M3 uplink port module connect to different boards. For details of working principles of each module, see board description in the Hardware Description.
• For details of service flow directions in the M1 service port module, see board working principles in the Hardware Description.
• The service flows processed by the M2 core processing module are classified into two types: One type of service flows are transmitted upstream after they are processed by the Ethernet switching module and the M3 uplink port module; the other type of service flows are transmitted upstream after they are processed by the Ethernet switching module, service processing module, and then Ethernet switching module again.

Can an STA automatically switch to an access point with stronger signal strength in a smart Wi-Fi coverage network?

• For an STA that has the capability of roaming aggressiveness, it automatically compares the signal strength among detected access points and switches to an access point with stronger signal strength.
• For an STA that does not have the capability of roaming aggressiveness, if Huawei ONT like HG8245Q2 finds that the signal strength of the Wi-Fi device is poor, Huawei GPON ONT disconnects the Wi-Fi device from its current access point and the Wi-Fi device has to look for an access point with stronger signal strength.

The action of Wi-Fi roaming and switching is mainly dependent to the user's Wi-Fi terminal. Some Wi-Fi terminals will continuously attempt to connect to the access point from which they had been disconnected rather than looking for an access point with stronger signal strength. For these Wi-Fi terminals, contact the vendor to resolve the roaming and switching issues.

Description of the CCUA Board and the CCUB Board on Huawei MA561x

1. Description of the CCUA/CCUB board 
CCUA: It is a centralized control unit of the MA5610. Through the service board configuration, the MA5610 supports up to 256 POTS ports or 48 FE port for user access. 
CCUB: It is a centralized control unit of the MA5616. Through the service board configuration, Huawei MA5616 supports up to 256 POTS ports or 128 ADSL2+ ports for user access. 

2. Daughter board supported by the CCUA/CCUB board 
The CCUA/CCUB board, configured with different daughter boards, can provides one EPON, GPON, or GE upstream port, and one GE optical or electrical subtending port Only one CCUA/CCUB board can be configured on the MA5616, and it is hot swappable. 
The CCUA/CCUB board supports the GP1A, EP1A, GE1A, and ASDA daughter boards. 
The GP1A daughter board provides one GPON port and one GE optical port. 
The EP1A daughter board provides one EPON port and one GE optical port. 
The GE1A daughter board provides two GE optical ports. 
The ASDA daughter board is of the POTS DSP type, and it is configured when the POTS service is supported. When the voice service is not used, this daughter board may not be configured. When it is not configured, the voice service board (Huawei ASPB board or ASRB) cannot be registered. 

3. CCUA/CCUB upstream transmission or subtending (the following port IDs are IDs displayed in the CLI) 
Note: Ports 0 and 1 on the CCUA/CCUB board are displayed as ports 1 and 0 in the CLI. In addition, the default VLAN of the port cannot be set. 
(1) When the CCUA/CCUB board is configured with the GP1A or EP1A daughter board, port 0 is a GE port, and port 1 is a PON port. The PON port is used for upstream transmission, and the GE port can be used for either upstream transmission or subtending. In this case, three upstream transmission modes are supported: upstream transmission through the PON port, through the GE port, and through both the GE port and the PON port. 
When you want to use the GE port for upstream transmission, run the network-role 0 uplink command to set the GE port as the upstream port. 
In hardware, GE port 1 corresponds to two GE ports, one optical and one electrical, which share one internal channel. Only one can be used, corresponding to port 0 in the CLI. You can run the combo-mode 0 optic/electric command to switch between optical and electrical, and also you can set the mode as autoadaptation , which means that the system automatically chooses one. 
(2) When the GE1A daughter board is configured, the MA561x functions as a DSLAM. Port 1 is used for upstream transmission, and port 0 can be used for either upstream transmission or subtending. The configuration method is the same as that in the first condition (configured with the GP1A or EP1A daughter board). 
(3) The two GE ports on the GE1A daughter board support aggregated upstream transmission. 

Huawei OSN 8800 System Architecture

Huawei OptiX OSN 8800 system uses the L0 + L1 + L2 architecture. Ethernet/MPLS-TP switching is implemented on Layer 2, ODUk/VC switching on Layer 1, and wavelength switching on Layer 0.

Figure 1 and Figure 2 show the system architecture of the OptiX OSN 8800 used as an MS-OTN and an OCS system, respectively.

Figure 1 System architecture of the OptiX OSN 8800 (MS-OTN)

 NOTE:

In Figure 1, L2 switching module is marked in a dotted line box, indicating that not all the OTU or tributary boards provide a Layer 2 switching module.

• An OTU board equipped with a Layer 2 switching module is referred to as an Ethernet over WDM (EoW) board, such as an LEM24 or LEX4 board.
• A Huawei tributary board TDX equipped with a Layer 2 switching module is referred to as an Ethernet over OTN (EoO) board, such as a TEM28 board.

Figure 2 System architecture of the OptiX OSN 8800 (OCS)

 NOTE:

An board equipped with a L2 switching module is referred to as an Ethernet over SDH (EoS) board in Figure 2. such as an EGSH or EAS2 board.

Functions of modules are as follows:

• Optical-layer boards are classified into optical multiplexer and demultiplexer boards, optical add/drop multiplexing (OADM) boards, optical amplifier (OA) boards, optical supervisory channel (OSC) boards, optical spectrum analysis boards, optical variable attenuator boards, and optical power and dispersion equalization boards. These boards are intended to process optical-layer services, for example, to cross-connect wavelengths at the optical layer.
• Electrical-layer boards such as OTU, tributary, and line boards are used to process electrical-layer signals, and perform conversion between optical and electrical signals. The OptiX OSN 8800 uses a tributary-line-separate architecture, and a centralized cross-connect unit to flexibly groom electrical-layer signals at different granularities.
• For OptiX OSN 8800, an universal line board is used to process electrical-layer signals and perform conversion between optical and electrical signals. In addition, an universal line board can work with a centralized cross-connect board to achieve hybrid transmission and fine-grained grooming of OTN, SDH, and packet services.
• For OptiX OSN 8800, EoO, EoW, Ethernet over SDH (EoS), and packet boards have L2 processing capabilities. They can add, strip, and exchange MPLS or VLAN tags, learn MAC addresses, and forward packets. Only packet boards can add, strip, or exchange MPLS tags.
• As the control center of the entire system, the system control and communication (SCC) board cooperates with the network management system (NMS) to manage boards in the system and to implement inter-subrack communication.
• The clock board provides system clock signals and frame header signals to each service board, and synchronizes the local system time with the upstream system time, achieving clock and time synchronization.
• The power supply and fan systems with a redundancy protection design ensure highly-reliable equipment operation.
• The auxiliary interface board provides functional ports such as clock/time input/output ports, management serial port, alarm output and cascading ports, and alarm input/output ports.
• Inter-board communication and service cross-connections, clock synchronization, and power supplies are implemented using the backplane buses. Backplane buses include control and communication buses, clock buses, and power buses.

What Are the Reasons for the Static LSP's Failure in Becoming Up on Huawei Switch?

A static LSP is classified into the common static LSP, static LSP bound to the tunnel, and
static CR-LSP bound to the tunnel.
Huawei switches of V200R002C00 or later support MPLS TE.
Each node checks the command configuration of a common static LSP. The common
static LSP fails to be configured in any of the following situations:
– MPLS is not enabled globally.
– The static LSP with the same name exists.
– The static LSP with the same destination address and the same outbound interface (next hop) exists.
– The static LSP with the same incoming label exists.
– The configured next hop address is not the actual next hop address in the routing
table.
Each node checks the command configuration of a static LSP bound to the tunnel. The
static LSP bound to the tunnel fails to be configured in any of the following situations:
– MPLS is not enabled globally.
– MPLS TE is not enabled globally.
– On the ingress node, the bound tunnel does not exist or is not configured.
– The static LSP with the same name exists.
– The static LSP with the same destination address and the same outbound interface
(next hop) exists.
– The static LSP with the same incoming label exists.
– The configured next hop address is not the actual next hop address in the routing
table.
Each node checks the command configuration of a static CR-LSP bound to the tunnel.
The static CR-LSP bound to the tunnel fails to be configured in any of the following
situations:
– MPLS is not enabled globally.
– MPLS TE is not enabled globally.
– On the ingress node, the bound tunnel does not exist or is not configured.
– The static LSP with the same name exists.
– The static LSP with the same destination address and the same outbound interface
(next hop) exists.
– The static LSP with the same incoming label exists.
– The configured next hop address is not the actual next hop address in the routing table.

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