The MS-OTN, this technology has integrated the technologies of the OTN, TDM, and packet planes, and supports collaboration between Layer 0, Layer 1, and Layer 2.

It is an ideal technology for future-proof transport networks since it meets bandwidth, quality, and cost requirements.

MS-OTN devices are new Huawei OTN equipment that are developed based on NG WDM devices. Different from NG WDM devices, MS-OTN devices support multiprotocol label switching transport profile (MPLS-TP). In other words, only OTN devices that support MPLS-TP and packet switching can be called MS-OTN devices.

The core of MS-OTN is "all in one". MS-OTN mainly has four characteristics:
Multi-service transmission: MS-OTN supports transmission of any service at any rate, such as Huawei SDH, SONET, PDH, ETH, FC, SDI, PON, SAN, and CPRI.

Universal switching: With integration of L0+L1+L2, MS-OTN provides universal service switching and grooming of services at the wavelength, packets, ODUk, and VC levels.

Unified transmission: Various services can be mapped into appropriate channels, and aggregated onto wavelengths for unified transmission.

Centralized maintenance: A centralized network management system visualizes O&M of Layer 0, Layer 1 and Layer 2

Huawei OSN1500B is a STM-16 level MSTP, It has 12 service slots and can MAX support 5*STM-16 interfaces. OSN1500B Subrack comes with two PIU (Power Interface Unit), one AUX (System Auxiliary Interface Board), others system board and service board are configurable. Thunder-link.com also offers typical configuration bundle line, to meet your different requirement on various scenarios. In addition, Thunder-link.com provides self configuration page, where you can configure your own OSN1500B by selecting boards and items yourself, with our professional technical support to rich your experience.

Supports Mesh networking, network nodes plug and play.

Supports dynamic increase of rate and capacity.

Supports chain, ring, tangent rings, intersecting rings, etc networking topologies.

Supports maximum 1 STM-16 four-fiber, 2 STM-16 two-fiber, 4 STM-4 four-fiber, 9 STM-4 two-fiber MSP rings.

Supports Mesh Protection and Restoration(ASON).

Supports distributed restorable rerouting protection.

Supports 5-level service dedicated protection scheme based on different SLA: Diamond, Gold, Silver, Copper and Iron services.

Supports 2/4 fiber MSP Ring, 1+1, 1: n Linear MSP and SNCP/SNCMP/SNCTP SDH Network Protection.

Supports Fiber shared virtual path protection, Fiber shared MSP Ring and DNI (ITU-T G.842).

Supports RPR, RSTP Ethernet Service Protection and VP-RING/VC-RING ATM Service Protection.

Supports 1+1 hot backup for system control boards, cross-connect and synchronous timing boards.

Supports 1+1 hot backup for power supply modules.

Supports Redundancy protection for fan modules.

Supports 1:n tributary protection for E1/T1/E3/T3/ E4/STM-1(e)/FE TPS protection.

After configured PBR on Huawei S7700(V200R010C00SPC600), tracert results show PBR not taking effect.

To solve this problem,here we offer a method to troubleshoot this problem.

First of all,making sure that traffic-policy is configured correctly,also ACL and applying traffic-policy in the appropriate interface.Especially the direction used in traffic-policy,inbound direction only effect the traffic enter the port,outbound only influence the traffic forwarded out of the interface.
eg:
#
acl 3001
rule 5 permit ip source 192.168.1.0 0.0.0.255 destination 10.1.1.0 0.0.0.255
traffic classifier to_inbound
if-match acl 3001
traffic behavior to_inbound
redirect ip-nexthop 172.16.1.1
traffic policy to_inbound
classifier to_inbound behavior to_inbound
int g0/0/1
traffic-policy to_inbound inbound
#
this configuration will redirect traffic,those from 192.168.1.0/24 to 10.1.1.0/24,to 172.16.1.1,
But if the traffic-policy is used as :
int g0/0/1
traffic-policy to_inbound outbound
this wouldn't help anything.
Particularly, when configured with outbound,but swap the source IP address and destination IP address in ACL,this may be valid,just like
acl 3001
rule 5 permit ip source 10.1.1.0 0.0.0.255 destination 192.168.1.0 0.0.0.255
traffic classifier to_inbound
if-match acl 3001
traffic behavior to_inbound
redirect ip-nexthop 172.16.1.1
traffic policy to_inbound
classifier to_inbound behavior to_inbound
int g0/0/1
traffic-policy to_inbound outbound
Althrough this two scenarios may have same result,but in fact,they work completely differently.

In the first situation,traffics are inspected before traveling through device.
In the second secnario,traffics are inspected when the forward out of the device,in some situation,this may happen when traffic on their return trip.

After checking the configuration,we'd better test if the redirected IP address is accessible.
We can do the test by ping or checking if the device has learned the MAC address of the redirected address.

Then,we can inspect the interface configuration,checking if there is other command that will influence the traffic forwarding.
eg: traffic-filter
traffic-filter is added from V200R002C00 when traffic-filter and traffic-policy both configured under the very same interface,traffic-filter will take effect first.
When traffic matches traffic-filter,it wouldn't check if it matches traffic-policy.
This problem is quite concealed.
What's more, when traffic-filter configured,if the traveling traffic doesn't match any rules in traffic-filter,it will be forwarded as usual,quite different with ACL.

Huawei OSN6800 OSN8800 optical transponder board TN13LSX client-side module is pluggable, it has below specification

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

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 MA5606T or MA5652G serves as a 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 Huawei OLT MA5608T 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 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 Huawei MA5606T and MA5652G serve as an ONU and the optical patch is normal, LOS is generated when an optical fiber is removed.

Huawei OSN3500 is a STM-64 level MSTP, It have 15 service slots and can MAX support 12*STM-64 interface. OSN3500 Subrack comes with two PIU (Power Interface Unit), one AUX (System Auxiliary Interface Board), others system board and service board are configurable. Its Clock Synchronization function includes:
Line clock source
Tributary clock source
Two external clock inputs/outputs (2 MHz or 2 Mbit/s)

Some people buy Huawei MA5800 first time, so do not how to do figure Ring Check.

The Ring Check feature enables the device to send the Ring Check packets periodically and monitors the Ring Check packets received on the user-side, cascade-side, and network-side to detect whether a loop occurs on the network of the carrier. If a loop occurs, the MA5800 deactivates the subscriber port on the loop and reports the corresponding alarm to the NMS. This ensures that the device runs in the normal state and that legal users are not affected.

Run the ring check enable command to enable the user-side ring network detection.

Run the ring check uplink detection enable command to enable the network-side ring network detection.

Run the ring check cascade detection enable command to enable the cascade-side ring network detection.

Huawei ONU MA5671 has below L3 features:

• PPPoE/Static IP/DHCP/DHCP
• IPv6
• DDNS/DMZ/DNS/NAPT
• Static routes
• Multiple network segment addresses as well as routing and forwarding on service ports
• Port mapping/Port trigger
• ALG/UPnP/ARP

Huawei NG WDM/OTN Systems
Traditional WDM systems provide only transparent transmission of services; they do not support flexible grooming of services. Therefore, maintaining traditional WDM systems is costly. Due to the lack of complete protection mechanisms, traditional WDM systems cannot meet the service reliability requirement. With respect to system monitoring, traditional WDM systems support only the OSC channel, so they cannot achieve precise management of channels. To overcome the preceding issues, WDM systems must have revolutionary changes. As shown in Figure 2, compared with traditional WDM systems, NG WDM/OTN like Huawei OSN 8800 systems support flexible optical and electrical service grooming. In addition, the use of the ASON/GMPLS plane enables intelligent management of WDM systems.
Perceived from the evolution of WDM systems, the new-generation WDM systems are usually referred to as NG WDM systems. From the point view of standard compliance, Huawei NG WDM systems comply with ITU-T OTN recommendations, such as G.872, G.798, and G.709, so these systems are also known as OTN systems.
• Flexible grooming through OTN cross-connections
• Electrical cross-connections
With ODUk electrical cross-connections, Huawei NG WDM/OTN systems offer flexible electrical circuit grooming and protection capabilities for OTN services. In addition, the substitution of OTU boards with independent tributary and line boards allows mixed transmission of multiple services over the same wavelength, fully utilizing wavelength bandwidth. Upon a change in the service requirements, only tributary boards need to be changed, which protects the investment on line boards.

• Optical cross-connections offered by ROADMs
Huawei NG WDM/OTN systems provide OCh grooming. Wavelength-level grooming is achieved through software without having hardware adjusted.
SDH-like OAM functions
Huawei NG WDM/OTN systems comply with ITU-T. G.709. The use of various OTN overheads achieves precise management of service channels.
High reliability
The OTN feature provides SDH-like protection capabilities. In addition, the use of the ASON/GPMLS plane offers dynamic

H901NXED is a 8-port upstream interface board of Huawei NG-OLT, providing 10GE/GE optical ports. Without 10GE SFP+ module equipped as default, if need equip SFP+ module, please contact with thunder-link.com representative.

Huawei 8-port 10GE/GE Optical uplink board

Apply to Huawei MA5800 X2, MA5800 X7, MA5800 X15, MA5800 X17 OLT system

Without 10GE SFP+ module equipped by default

Supports SyncE.

The Layer 2 MTU of an ONT HG8245Q2 for example is fixed as 2000 bytes.

The Layer 3 MTU can be configured and queried on the WAN port.


For an IPoE WAN port - the default MTU is 1500 bytes.

For a PPPoE WAN port - the default MTU is 1492 bytes.

Q: Does Huawei 32-channel VDSL2 over POTS board VDLE have vectoring function?
A: No,VDLE cannot support vectoring.

Q: What board can support vectoring? we have a DSLAM 5616 configured with ADLE,CCUE and PAIA,but now we need the vectoring function.
A: H83BVCLE (32-channel VDSL2 over POTS),H83BVCLF (32-channel VDSL2), H83BVCMM and H83DVCMM(48-channel VDSL2) can support.

Q: Then I only need add a VCLE board to the existed MA5616 Chassis?
A: No, these vectoring service boards support the vectoring by working with the enhanced subrack MABB, main control board CCUE and power board PDVAA.

Auto negotiation is fully supported and is switched on by default.

You can disable it using the "undo negotiation auto" command on the interface.

You can then manually specify a speed and duplex setting using the "speed Bleep" and the "duplex Bleep" commands.

The ports support auto negotiation of speed, duplex and mdi/mdix by default and I have never seen any negotiation issues on Huawei S6720S-26Q-EI-24S-AC!

You also have the "virtual-cable-test" command to test for cable problems on the link, although this is service affecting.

Huawei ETP4890-A2 is a box-type power system that supplies power for –48 V DC communications equipment. It uses 15 A or 30 A rectifiers and provides a maximum output current of 90 A.

The ETP4890-A2 has the following features:
 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 network management systems (NMSs) 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 supports Huawei master/slave protocols and access network point-to-point protocols, which allows Huawei access network communications equipment Huawei OSN8800 OSN3500 MA5800 to connect to the U2000.
 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.

Question

The port-based GPON type B protection configured on an OLT implements protection for primary/secondary backbone optical paths.

Context: Port A and port B on a Huawei GPON OLT are configured into a protection group, in which, port A is the active port and port B is the standby port. Furthermore, port A is connected to ONUs that go online normally.

Normally, whether port B reports the alarm "The feeder fiber is broken or OLT can not receive any expected optical signals(LOS)" all the time and whether this alarm persists after being cleared manually on the NMS?
If an active/standby switchover is triggered by CLI or optical path, then port A serves as the standby port and port B serves as the active port, what alarms are reported by port A?
Remove the optical fiber connected to port A (the standby port). Do alarms reported by port A change?
Answer

Port B reports the alarm "The feeder fiber is broken or OLT like Huawei MA5800 X7 can not receive any expected optical signals(LOS)" all the time because this port is not connected to online ONUs. This standby port is in this state for a long time and therefore it reports the alarm all the time. Though this alarm is cleared manually on the NMS, it is still displayed on the NMS after a manual synchronization or automatic polling synchronization.
Port A (the standby port) generates alarms "The feeder fiber is broken or OLT can not receive any expected optical signals(LOS)" and "The backbone fiber on the port in Type B protection group is broken or the expected optical signal is not detected". After optical signals of port A are detected, port A reports the recovery alarm "The port in Type B protection group receives the expected optical signal".
Port A (the standby port) generates the alarm "The backbone fiber on the port in Type B protection group is broken or the expected optical signal is not detected" indicating that the optical path fails. After optical signals of port A are detected, port A reports the recovery alarm "The port in Type B protection group receives the expected optical signal".

Five specifications for power budget of Huawei optical GPON port include CLASS A, CLASS B, CLASS B+, CLASS C, and CLASS C+. CLASS B+ is used most frequently. CLASS C+ is used for long-distance transmission in some scenarios. The power budget of CLASS B+ can reach 28.5 dB, while that of CLASS C+ is higher, reaching 32 dB.
The following lists the GPON-related recommendations:
ITU-T G.984.1: General characteristics, describing the basic GPON features and main protection modes.
ITU-T G.984.2: Physical Media Dependent layer specification, describing physical-layer GPON like H805GPFD parameters such as physical parameters of optical modules, including the transmit optical power, receive sensitivity, and overload power. In addition, various levels of optical power budgets such as CLASS B+ are defined in this recommendation.
ITU-T G.984.3: Transmission convergence layer specification, describing TC-layer GPON protocols, including the upstream and downstream frame structures and GPON working principles.
ITU-T G.984.4: ONT management and control interface specification, describing the GPON management and maintenance protocols, including OAM, PLOAM, and OMCI protocols.
ITU-T G.984.5: Enhancement band, describing GPON wavelength planning, especially the reserved wavelength bands reserved for the next generation PON.
ITU-T G.984.6: Reach extension, describing several long reach PON solutions for prolonging the GPON transmission distance.
TR-156: using GPON access in the context of TR-101.

Huawei SSND0SLQ16(L-16.1,LC), 4xSTM-16 Optical Interface Board(S-16.1,LC), is a SDH service board in Huawei OSN 2500, OSN 3500, OSN 7500 system. You may find the different name about it, like SSND0SLQ16(L-16.1,LC), SSND0SLQ1603, SSN1SLQ16A12, actually it is the same item described.

The SSND0SLQ16(L-16.1,LC) is a line board and is available in three functional versions, namely, N1, N2, and N4.The N2SLQ16 is discontinued.


The SSND0SLQ16(L-16.1,LC) can be used on the Huawei OptiX OSN equipment series to transmit and receive STM-16 optical signals. The SSND0SLQ16(L-16.1,LC) converts the received optical signals into electrical signals and sends the electrical signals to the cross-connect side. In addition, the SSND0SLQ16(L-16.1,LC) converts the electrical signals sent from the cross-connect side into optical signals and transmits the optical signals.

In FTTH, Huawei OLT adds VenderTag for PITP packets; in FTTB, the ONU adds VenderTag for PITP packets and the OLT transparently transmits VenderTag information.
Configuring the ONU:

huawei(config)#pitp enable pmode

Configuring the OLT:

huawei(config)#pitp enable pmode

Disabling PITP for service ports of FTTB:

huawei(config)#pitp service-port index disable

In FTTH, the OLT MA5608T does not add VenderTag for PITP packets; in FTTB, the ONU adds VenderTag for PITP packets and the OLT transparently transmits VenderTag information.
Configuring the ONU:

huawei(config)#pitp enable pmode

Configuring the OLT:

huawei(config)#pitp disable

In FTTH, the OLT adds VenderTag for PITP packets; in FTTB, the ONU works with the OLT to add VenderTag for PITP packets.
Configuring the ONU:

huawei(config)#pitp enable pmode

huawei(config)#raio-mode cntel-xpon pitp-pmode

Configuring the OLT:

huawei(config)#pitp enable pmode

huawei(config)#raio-mode cntel-xpon pitp-pmode

huawei(config)#pitp permit-forwarding service-port index enable

To replace a faulty optical network unit (ONU) Huawei MA5671 for example on a live network, you need to reload the configurations after the replacement or back up the data before loading the configurations. The operations are complicated and prone to errors. Using the network management system (NMS) to replace the ONU improves the efficiencies in device replacement and configuration loading, and at the same time reduces the error probabilities. There are five steps for replacing an ONU rapidly.

1, Configure automatic backup policies and automatic upgrade policies. (This is the prerequisite of the replacement.)
After the automatic backup policy is configured, the device backs up data at the configured time. The latest backup database will be used during the replacement.
After the automatic upgrade policy is configured, the NMS will create an automatic ONU upgrade task to upgrade the ONU if the ONU version is different from the target version set in the automatic upgrade policy.

2, Replace the ONU and power on the Huawi ONU to ensure that the optical link on the device is normal.
3, Start the ONU replacement operation on the NMS.
4, Bind the MAC address of the new ONU on the NMS.
5, Check the configurations and verify the services after the replacement.

Huawei TN52UXCM board consists of the ODUk/VC cross-connect module, packet switch module, control and communication module, and power supply module.


Module Function

ODUk/VC cross-connect module
The cross-connect module receives the data from each service board through the backplane to implement the electrical-layer grooming of ODUk (k= 0, 1, 2, 2e, 3, 4 or flex) signals or VC-4/VC-3/VC-12 signals. Then, the cross-connect module sends the signals to each service board to complete service cross-connection.

Packet switch module
The packet switch module receives packets from the packet processing boards through the backplane and sends services to the packet processing boards. In this manner, the packet switch module implements packet switching of Ethernet services.

Control and communication module
Controls operations on the board.
Controls operations on each module of the board according to CPU instructions.
Collects information about alarms, performance events, working states and voltage detection from each functional module on the board.
Communicates with the system control and communication board.
Power supply module
Converts the DC power supplied by the backplane into the power required by each module on the board.

Yes, not only be web, Huawei GPON ONT HG8546M also can be configured by Huawei OLT or NMS.

Most our engineer use OLT to configure, very convenient. Because you might firstly have OLT device, then will consider to buy Huawei ONT.

No, compared with MA5600T, Huawei MA5800 is next-generation OLT, so boards are not universal.
if you have plan to buy Huawei OLT, we highly recommend you choose MA5800 Series, because it has much better performance than MA5600T, price is a little higher than MA5600T.