#ma5683t

HetAN

The Huawei MA5600T/MA5603T/MA5608T serves as the CO OLT and supports multiple network construction modes and diversified access media to provide access for home users, mobile users, and enterprise users. Such a heterogeneous access network (HetAN) wins popularity.

User access: provides access for home users, mobile users, and enterprise users.

Network construction mode: supports FTTH, FTTB, FTTC, FTTW, FTTO, and FTTD networks.

By adding the WDM1r component, the MA5600T/MA5603T can be smoothly upgraded from GPON to 10G GPON.

Carriers can newly construct a 10G GPON network or upgrade a GPON network to a 10G GPON network, as shown in Figure 1. Specifically, the WDM1r component is added to the OLT so that GPON and 10G GPON signals can be transmitted over the same ODN in the multiplexing mode.

MA5600T Huawei 

The MA5608T is an integrated fiber-copper access device, and can serve as a mini-OLT or mini-DSLAM.

The MA5608T, if serving as a mini-OLT, supports GPON and 10G GPON access modes. It can be installed at a residential district or a street side, which reduces the usage of ODN backbone optical cables, lowers the ODN deployment cost and difficulty, and minimizes the CO equipment room space.

The MA5608T, if serving as a mini-DSLAM, supports ADSL2+, VDSL2, SHDSL, and POTS access modes and provides Internet access, voice, and video services.

Issue Description

After the SCUL Board replacement on one Huawei OLT 

and it SNMP V3 communication witch the N2000 manager, this one is sending continually a higth number of SNMP packets towards the Huawei OLT. 

So  the occupation ressources (cpu) of the SCUL is increasing and is reaching the critical target of 80%

Alarm Information

Alarm "system ressource overload" ID 910229505

Handling Process

Workaround:  Reset the high cpu process, or reset all the process if it doesn’t work. Definitive solution: Patch V200R011C12B035CP0011

Root Cause

On the sysmonito, some process cpu are high, for example: Environment process first Environment Process Fault Process Device manager Process Profile manager Process PVC service manager Process PON service manager Process

Suggestions:

Huawei MA5683T GPON OLT equipped with 2*GICF 1*GPBD

Huawei MA5683T GPON OLT equipped with 2*GICF, 2*GPFD

Huawei MA5683T GPON OLT equipped with 2*X2CS 6*GPFD

More related:

HG850a PPPoE connection failed due to VAS profile mismatch on BMS

How to Configuring a GPON ONT (Distributed Mode)

Issue Description

Software version is SmartAX MA5600 V800R005C32B056HP1002. If queue scheduler has been configured with commmand "queue-buffer 0 0 0 0 0 15 65 20" packets of the queues with queue buffer size "0" will be discarded. In version SmartAX MA5600 V800R005C32B056 the packets of the queues with queue buffer size "0" will be discarded only if congestion occurs and not enough bandwidth to transmit all packets from all queues and priorities of those queues are lower than others. In version SmartAX MA5600 V800R005C32B056HP1002 this feature causes packet drops. For example for internet vlan, if it would be configured even with highest  priority 7 and queue-buffer 0 0 0 0 20 15 65 0: cos queue map is configured  with default values: cos-queue-map cos0 0 cos1 1 cos2 2 cos3 3 cos4 4 cos5 5 cos6 6 cos7 7 traffic table for service port:   traffic table ip index 11 cir 3968 cbs 128976 pir 7936 pbs 257952  priority 7 priority-policy local-setting traffic table ip index 12 cir 960 cbs 32720 pir 1920 pbs 65440  priority 7 priority-policy local-setting service-port 30 vlan 632 adsl 0/1/17 vpi 1 vci 32 single-service rx-cttr 11 tx-cttr 12 So, with this configuration all packets for service port 30 will be discarded.

Alarm Information

Null

Handling Process

1. Check packets captures. 2. Check Huawei MA5600T configuration. 3. Get answer from R&D about new queue-buffer feature. 4. Solve the problem by modifying queue buffer size from 0 to another value.

Root Cause

The packets of the queues with queue buffer size "0"  are discarded despite the highest queue priority and availuable bandwidth.

1, Huawei MA5683T GPON OLT equipped with 2*X2CS 6*GPFD

2,  Huawei MA5683T GPON OLT equipped with 2*GICF, 2*GPFD

3,  Huawei MA5683T GPON OLT equipped with 2*GICF 1*GPBD

More information, please refer to below,

1,  MA5600V800R00X series devices load the IO data package

2,  How to Configuring a GPON ONT (Distributed Mode)

The MA5680T/MA5683T, functioning as an integrated optical-copper access equipment, provides the integrated broadband and narrowband access and FTTx optical access services that feature high rate, high bandwidth, and high quality. It can function as an OLT, MSAN, or IP DSLAM. The MA5680T is a large-capacity device and the MA5683T is a medium-capacity device. l Supports the 10G GPON and GPON access service. Both can function as an optical line terminal (OLT) in the GPON system, working with the optical network terminal (ONT) or other optical network units (ONUs). l Supports the point-to-point (P2P) FE/GE optical access. The P2P board is mainly used for cascading, and it can also provide users with P2P FTTH access by cooperating with ONTs. l Provides the voice service solution based on the Session Initiation Protocol (SIP) and H. 248, supports the POTS port to implement the voice service, fax service, narrowband modem service, and various supplementary services. l Provides the E1/N*64k private line service through the TDM SHDSL board. And H802EDTB board supports the TDM SHDSL feature. l Supports broadband access services such as ADSL2+, VDSL2, and SHDSL, enhancing the xDSL function. In the upstream direction, the device is generally connected to the IP/MPLS network through the Ethernet (GE/10GE) port.

Typical network of the MA5680T/MA5683T(OLT)

multicast-forward multicast-forward

Function

This command is used to configure the multicast forwarding mode of the ONT in a GPON ONT service profile. In different multicast forwarding modes, the downstream multicast packets from the ONT to the Ethernet port are different.

If the ONT is directly connected to the set-top box (STB) or PC, select the untag mode.

If the ONT is directly connected to the home gateway, select the tag mode.

If the ONT does not support the set of multicast forwarding mode or the OLT does not specify the ONT multicast mode, select the unconcern mode.

By default, the multicast forwarding mode of the ONT in the GPON ONT service profile is unconcern. Certain ONTs do not support setting the multicast forwarding mode of the ONT and the default forwarding mode used after an ONT is added is unconcern. In this manner, the restoration of the ONT configuration is not affected.

Format

multicast-forward { untag | tag { translation { vlanid | igmp-user-vlan } | transparent } | unconcern }

Parameters

Parameter

Description

Value

untag

MA5683T

MA5680T

Specifies the multicast forwarding mode as untag, that is, the downstream multicast packets from the ONT to the Ethernet port do not carry the VLAN tag. When the ONT is directly connected to the set-top box (STB) or PC, use this parameter.

-

tag

Specifies the multicast forwarding mode as tag, that is, the downstream multicast packets from the ONT to the Ethernet port carry the VLAN tag. When the ONT is directly connected to the home gateway in the application, use this parameter.

-

translation

Specifies the multicast forwarding mode as translation. If the carrier plans the home gateway at the user house, generally, the user-side multicast VLAN (MVLAN) needs to be planned. If the network-side MVLAN differs from the user-side MVLAN, use this parameter for VLAN translation.

-

vlanid

Specifies the VLAN tag used after the VLAN translation if the multicast forwarding mode is set to translation.

Numeral type. Range: 1-4095.

igmp-user-vlan

Specifies the VLAN in the VLAN tag (used after the VLAN translation) to the user VLAN of IGMP packets if the multicast forwarding mode is set to translation. This parameter can be used only after the IGMP packet forwarding mode based on the user VLAN is configured on the ONT.

-

transparent

Specifies the multicast forwarding mode as tag transparent transmission. If the carrier plans the home gateway at the user house, generally, the user-side MVLAN needs to be planned. If the network-side MVLAN and the user-side MVLAN are the same, use this parameter..

-

unconcern

Specifies the multicast forwarding mode as unconcern. The OLT does not specify the multicast forwarding mode of the ONT and the multicast forwarding of ONT is determined based on the ONT condition.

-

Modes

GPON ONT service profile mode

Level

Operator level

Usage Guidelines

Run the config command to enter global config mode, and then run the ont-srvprofile gpon command to enter GPON ONT service profile mode.

After running this command, you need to run the commit command to submit the configuration. Then, the configuration performed through this command can take effect.

This command is used to configure the tag configuration mode of the multicast data packets of the ONT, and you can run the igmp-forward(gpon profile) command to configure the tag configuration mode of the downstream IGMP protocol packets.

You can run the display ont-srvprofile gpon command to query the ONT multicast forwarding mode in the GPON ONT service profile.

Example

To set the multicast forwarding mode of ONT service profile 10 so that the packets carry tag VLAN 10, do as follows:

huawei(config-gpon-srvprofile-10)#multicast-forward                     { tag<K>|unconcern<K>|untag<K> }:tag                                             { translation<K>|transparent<K> }:translation                                   { igmp-user-vlan<K>|vlanid<U><1,4095> }:10                                                                                                                                          Command:                                                                                multicast-forward tag translation 10 huawei(config-gpon-srvprofile-10)#commit

System Response