Can Huawei VDSL2 VDLE support vectoring function?

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 Huawei DSLAM MA5616 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.

How Do I Restore the Default VLAN Configuration of an Huawei Switch Interface?

Huawei Switch default VLAN configuration of an Huawei Campus Switch interface involves the default VLAN of the interface
and the VLAN that the interface joins. By default, the default VLAN configuration of an
interface is as follows:

Access: The default VLAN is VLAN 1, and an access interface joins VLAN 1 in
untagged mode.

Trunk: The default VLAN is VLAN 1, and a trunk interface joins VLAN 1 to VLAN
4094 in tagged mode. That is, a trunk interface allows all VLANs.

Hybrid: The default VLAN is VLAN 1, and a hybrid interface joins VLAN 1 in
untagged mode.

Dot1q-tunnel: The default VLAN is VLAN 1, and an dot1q-tunnel interface joins
VLAN .1

Negotiation-auto or Negotiation-desirable: If the interface is negotiated as an access
interface, the default VLAN configuration of the interface is the same as that of the
access interface. If the interface is negotiated as a trunk interface, the default VLAN is
VLAN 1 and the interface joins VLANs 1 to 4094 in tagged mode. That is, the interface
allows all VLANs.

Run the display this include-default | include link-type command in the interface view to
check the link type of the interface, and then perform one of the following configurations to
restore the default configuration of the interface.

How to Route Optical Fibers (PON Board)?

When you firstly buy Huawei MA5800, do you know how to Route Optical Fibers on Huawei GPON service board?

What Is a Rogue ONT and How to Prevent Such an ONT?

If an ONT HG8310M for example transmits optical signals to upstream at a timestamp that is not assigned to it, it is called a continuous-mode ONT. Such an ONT is also call the rogue ONT, which transmits optical signals at any time. When a rogue ONT exists,

• If the rogue ONT is online, one or all of the other ONTs connected to the same PON port on the OLT go offline or go online and offline frequently.
• If the rogue ONT is not configured, the other ONTs that are not configured will fail to be automatically discovered.

Enable rogue ONT detection on Huawei GPON OLT. A rogue ONT will be isolated after being detected.

What is Huawei SLQ16 board substitution relation among different versions?

SLQ16 is a 4 port STM-16 optical interface board, can be used on Huawei OSN 3500, OSN7500. SLQ16 comes with 4 unit SFP module.

When the AU-3 services and TCM function are not required, Huawei N1SLQ16 and N2SLQ16 can be substituted with each other. The N4SLQ16 supports the board version replacement function to substitute for the N1SLQ16/N2SLQ16.

Huawei MA5800 Troubleshooting Cases

TC-C6050 Multicast Forwarding Mode Incorrect Due to Multicast Service Fault

This topic describes how to troubleshoot the fault multicast forwarding mode incorrect due to multicast service unavailable.

Fault Type

Multicast service

Keyword

Multicast unavailable

Fault Description

When the user VLAN is the same as the multicast VLAN, the multicast service is normal; however, when the user VLAN is different from the multicast VLAN, the multicast service is unavailable, but the multicast subscribers are online.

Cause Analysis

• The data configuration is incorrect, because the unicast service is normal but the multicast service is unavailable.
• The setting of the VLC software is incorrect.
• The join packet fails to reach the multicast server, or the server does not respond normally.
• Certain security functions are enabled. As a result, the packets are intercepted.

Procedure

1. The multicast service is normal when the user VLAN is the same as the multicast VLAN. Therefore, it can be determined that the device can implement the multicast service. In addition, the multicast subscribers are online when the multicast service is normal. Therefore, the multicast service of the device is normal.
2. Modify the user VLAN, and modify the multicast configuration data accordingly. It is found that the multicast subscribers are online, but the multicast program is not available on the PC that functions as the multicast client. Then, modify the user VLAN to be the same as the multicast VLAN. The multicast service returns to the normal state. Therefore, it can be determined that the setting of the VLC software is correct.
3. Capture packets on the PC that functions as the multicast client. It is found that no multicast packet is received. Then, capture packets on the PC that functions as the multicast server. It is found that the multicast packets are transmitted from the server.
4. Based on the preceding two situations, it can be determined that the multicast media packets are discarded on the way from Huawei MA5800 to the ONU HG8546M. Then, mirror the PON port and capture packets. It is found that the media packets are issued. Therefore, the media packets are discarded on the ONU side.
5. It is known that the protocol packets and the media packets are transmitted through different channels, that is, through different GEM ports. For ONU that does not have the VLAN conversion function, the media packets still carry the multicast VLAN tag when reaching the user port, and therefore the user port discards the data packets whose VLAN is different from the native VLAN of the user port on the ONU. Therefore, the PC (multicast client) cannot receive the multicast media packets, which causes the failure of the multicast service.
6. Run the ont multicast-forword tag translation command to modify the multicast forwarding mode of the ONU to translation. The multicast service returns to the normal state.

Suggestion and Summary

For ONU that does not have the VLAN conversion function, the multicast service is implemented on the ONU in the following three ways:

• The user VLANs and the multicast VLAN are the same (not recommended when the broadcast domain is large because of the large number of subscribers).
• All user VLANs are the same, but are different from the multicast VLAN. In this case, the multicast service is implemented by setting the multicast forwarding mode.
• A switch is connected to the ONU to remove or convert the VLAN tag. With the capability of the switch, the multicast service can be implemented for multiple subscribers and multiple VLANs concurrently.

Do You know Huawei OTN Line Board NQ2 has some restrictions on the line mode?

For Huawei OptiX OSN 6800:

If the TN12XCS board is used, TN52NQ2 or TN53NQ2 board supports a service capacity of 40 Gbit/s when it is installed in slot 1, 4, 11, or 14; only optical ports IN1/OUT1 and IN2/OUT2 of the NQ2 board are available and therefore the board supports a service capacity of 20 Gbit/s when it is installed in any of the other slots.
If the TN11XCS board is used, only optical ports IN1/OUT1 and IN2/OUT2 of the NQ2 board are available and therefore the board supports a service capacity of 20 Gbit/s regardless of which slot the board is installed.

For Huawei OptiX OSN 8800: The NQ2 board supports a maximum service capacity of 40 Gbit/s in any slot.

What is the System Architecture of Huawei MA5600T/MA5603T/MA5608T?

Huawei MA5600T/MA5603T/MA5608T 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 Huawei 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.

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.

What is the WLAN type of Huawei HG8245A?

What is the WLAN type of Huawei HG8245A?

It is 802.11b/g/n.

What Should I Do When Finding a MAC Address Flapping Alarm on Huawei S5700 Switch?

If MAC Address Flapping Alarm is reported only once on your Huawei S5700 Switch, ignore it.

If the alarm is reported multiple times, find the first and second interfaces where the MAC Address is learned. Shut down the second interface on Switch like S5720-36C-EI-28S-AC to locate the loop. Then adjust the networking to remove the loop.

How to Connect the PC when do Huawi OSN 3500 Commissioning?

The per-NE commissioning is performed by using the U2000 on a PC. This section describes how to connect the PC to the equipment properly. Make sure that the connection between the PC and the equipment is correct during the commissioning.

Prerequisites

The Windows operating system must have been installed on the PC for commissioning.

Tools, Equipment, and Materials

None.

Procedure

1. Make sure that the network cable is a straight-through cable. For details about the straight-through cable, see Straight-Through Cable in Hardware Description.
    NOTE:

   If a self-adaptive network adapter is installed on the PC, a cross-over cable can also be used.

   For details of the cross-over cable, see Crossover Cable in Hardware Description.
2. Connect the PC to Huawei OptiX OSN equipment, as shown in Figure 1.
   Figure 1 Connection between the PC and the OptiX OSN equipment 
   
    NOTE:

   In this example, the connection between the OptiX OSN 3500 and a PC is used as an example. The method of connecting other types of equipment to a PC is the same as that of connecting Huawei OptiX OSN 3500 to a PC, except that the auxiliary boards and their slot IDs are different. For the auxiliary boards and their slot IDs on the other types of equipment, see the Hardware Description of the corresponding equipment.
3. Power on the PC. Check the ETH port indicators of the PC and the auxiliary board. Normally, the LINK indicator is steady green, and the ACT indicator flashes orange.
   
   
    NOTE:

   In the case of a network that has only one gateway NE, the gateway NE is connected to the NMS through the ETH port, and the other NEs are connected to the gateway NE through the optical fibers.
4. Power on the PC. The Microsoft Windows starts automatically and the login window is displayed.
5. Log in with an administrator account.
6. Click OK to display the desktop of the Windows operating system.

Line board on Huawei OSN 800 is Offline

This section describes the possible causes and handling methods of a board that is offline on the U2000.

Fault Description

40G line board NS3 on Huawei OSN 8800 is offline and unavailable on the U2000 while the other boards are online.

NS3 reports the BD_STATUS alarm.

Impact on the System

NS3 cannot be managed or communicated with.

Possible Causes

• Cause 1: The slot that houses the board is faulty.
• Cause 2: The board is faulty.

Tools, Equipment and Materials

U2000

Procedure

• Cause 1: The slot that houses the board is faulty.
  1. Reseat Huawei 40G line board NS3 to check whether the fault is removed.
  2. If the fault persists, change the slot that houses the board.
• Cause 2: The board is faulty.
  1. Replace the faulty board.

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, S2700, S5700S-LI (except
S5700S-28X-LI-AC and S5700S-52X-LI-AC), or Huawei 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 the 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 S5700LI, run the multicast drop-unknown in the VLAN view to enable
this function.