Showing posts with label configuration OLT. Show all posts
Showing posts with label configuration OLT. Show all posts

Wednesday, April 12, 2017

Decrease of 4 GB Available Physical Memory Caused by Poor Contact Between Memory Modules and Slots in the T5220

Issue Description
The U2000 HA system is used in a project and the hardware configuration of the server is as 
follws:
Sun T5220 Single, 4 core CPU, 1.2 GHz, 8 GB memory (4 x 2 GB), 4 X 146 GB hard disks, 1 x 1000M NIC (4 ports), 1 monitor card
The available physical memory of the active server is only 4 GB during installation. The message "MB/CMP0/MCU0 is not configured" is displayed during the system self-test. 
Alarm Information
MB/CMP0/MCU0 is not configured.
Handling Process
1. Log in to the system in the serial port mode and run the showcomponent command. It is found that the MB/CMP0/MCU0 component is in the disabled state.
2. Run the following commands to change the status of the MB/CMP0/MCU0 component:
     SC>enablecomponent MB/CMP0/MCU0
     SC>clearasrdb
3. The available physical memory of the active server is correct after the first restart. After the second restart, however, the available physical memory of the active server is incorrect.
4. Disassemble the active server. It is found that the memory module and the slot are in poor contact. Remove the memory module and reinsert it back to the slot, and restart the system. Then, the available physical memory of the active server becomes normal. 
Root Cause
Two memory modules are in poor contact with slots in the mother board. 
Suggestions

Null
The most popular Huawei OLT as below:

MA5683T Platinum Line


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Monday, February 13, 2017

How should we do when client doesn't start on server after installing U2000V100R001C00CP0202 for Linux?

Issue Description

Verion information:
OS: Linux Suse 10
Database: Sybase 12.5
NMS: U2000V100R001C00
Single System.
After install a patch U2000V100R001C00CP0202 we try to start the client on the server and we receive the next error, and the client doesn't start:
U2KT20001MA11:/opt/U2000/client/bin # sh U2KClient_linux.sh
U2KClient_linux.sh: line 11: @{UserRoot}/.profile: No such file or directory
Alarm Information
No alarm, but after execute the client, the server show the next error:
U2KT20001MA11:/opt/U2000/client/bin # sh U2KClient_linux.sh
U2KClient_linux.sh: line 11: @{UserRoot}/.profile: No such file or directory
Handling Process
For solve the problem we should modify the "U2KClient_linux.sh". If the problem appear is because the file have in the line 11 the next information:
    . @{UserRoot}/.profile
And we should modify to:
     . /nmsuser/.profile
After the modification the client can start on the server.
Root Cause
I check the file "U2KClient_linux.sh" and I have seen the problem. We should change the profile on the own file for have the correct one.
Suggestions
After finish the patch check the executable client file and check all is correct.

The most popular Huawei OLT as below:

MA5683T Platinum Line


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Friday, February 26, 2016

Huawei MA5680T Gold Line FAQ

MA5680T Gold Line configuration including:
  • MA5680T Chassis
  • 1+1 PRTE equipped, Connect Power Board -48V DC
  • 1+1 SCUN equipped, Switching capacity 480Gbit/s active/standby mode.
  • 1 PCS X2CS 2-Port 10GE Uplink Interface Card.
  • 1 PCS GICF 2-Port GE Optical Interface Card, with 2 GE SFP Module
  • 3 PCS GPFD 16-Port GPON OLT Interface Board with 16 C+ SFP Module

    Huawei MA5680T Gold Line Configuration, is a recommended board bundle provided by Thunder-link.com, it has most common service type and ordinary ports. You can find other configuration bundle at CONFIGURE page, where you can even configure by yourself by selecting the boards you need. If you need customized configuration, please contact with Thunder-link.com Sales Team. who will come back to you shortly.

Huawei MA5680T Gold Line FAQ

Q: What is the difference between MA5680T and MA5683T?
A: The only difference is capacity, MA5683T max support 6 service slots, MA5680T max support 16 service slots. So MA5683T with smaller chassis.

Q: What is the difference between MA5680T and MA5600T?
A: MA5600T is multi service based while MA5680T is just OLT, MA5600T can support service like ADSL, VDSL, GPON etc, while MA5680T only supports GPON, P2P etc, but their hardware and configuration command is the same.

Q: Can I get technical support from thunder-link.com if we purchase MA5680T from you?
A: Yes, thunder-link.com has experienced technical team on Huawei FTTx solution, however, you may need to purchase technical support service from us as by default we only provide one year hardware warranty.

Q: Do you provide configuration manual to me if we purchase MA5680T from you?
A: Yes, you may contact our sales representative to require it after you purchase.

Q: Does MA5680T support AC power?
A: No, but you can purchase a telecom level AC to DC converter if you just have AC power source.

Q: Does the GPON SFP Module included in the bundle?
A: Yes, with GPBD board, 8 B+ SFP Module are included for free.

Q: Can I use MA5680T main control board SCUN as uplink so as to save the uplink board cost?
A: Yes, you can, but we don’t suggest, as Huawei OLT SCUN load balance is not well supported, so most customers are using SCUN in active/standby mode, if OLT lose power, which SCUN will work as the active SCUN will be randomly, which may affect service, also if the link is down, the active SCUN will not shift to the standby SCUN (it will only shift when SCUN board is down), then service may get affected also.

Q: Can I have 1000 Base-T as uplink?
A: Yes, instead of GICF uplink board you can purchase GICG uplink board, if use GICF, you can buy a electrical SFP module then you can have 1000 Base-T.

Q: What is the difference between different GPON board?
A:
BoardGPON TypePort QuantityOptical ModuleMaximum Split RatioONU based shaping
H802GPBD1G-GPON8SFP (Class B+ and Class C+)1:128No
H805GPBD
H806GPBD		1G-GPON8SFP (Class B+ and Class C+)1:128Yes
H802GPFD
H805GPFD		1G-GPON16SFP (Class B+ and Class C+)1:128Yes
H806GPBH
H807GPBH		1G-GPON8SFP (Class B+ and Class C+)1:128Yes
H802XGBC10G-GPON4XFP1:128Yes

Q: Does MA5680T support 10G GPON?
A: Yes, but the bottleneck is the uplink bandwidth.

Q: Can I use a 3rd party ONT with the MA5680T?
A: We don’t suggest so, as the understanding of TR069/OMCI protocol may different between different vendors.

Q: Can you offer MA5680T MIB to us?
A: You may check the details with our sales team.

Q: Can I buy 10G uplink board instead of GE?
A: Yes, then you may request our sales quote you X2CS board instead of GICF uplink board, each X2CS provide 2*10G ports.

Q: What is the difference between GPON B+ and C+ GPON transceiver?
A:
 B+  ModuleC+  Module
TypeOne-fiber bi-directional optical module, class B+One-fiber bi-directional optical module, class C+
Operating WavelengthTx: 1490 nm
Rx: 1310 nm		Tx: 1490 nm
Rx: 1310 nm
Encapsulation TypeSFPSFP
Port RateTx: 2.49 Gbit/s
Rx: 1.24 Gbit/s		Tx: 2.49 Gbit/s
Rx: 1.24 Gbit/s
Minimum Output Optical Power1.50 dBm3.00 dBm
Maximum Output Optical Power5.00 dBm7.00 dBm
Maximum Receiver Sensitivity-28.00 dBm-32.00 dBm
Optical Connector TypeSC/PCSC/PC
Optical Fiber TypeSingle-modeSingle-mode
Reach20.00 km20.00 km
Overload Optical Power-8.0 dBm-12.0 dBm
Extinction Ratio8.2 dB8.2 dB

Q: What is the max transmit distance between GPON OLT and ONT?
A: Max 20KM.

Q: Can I use 1:128 split ratio with B+ SFP Module?
A: Yes, but not suggested, most of our customers even use C+ module, are max using 1:64 split ratio.

Q: Do you also offer FTTH tool and accessories?
A: Yes, as a FTTx solution provider, also we offer FTTx accessories like FTTH tool box, optical splitter, terminal box, patch cord, power system etc.

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Tuesday, February 16, 2016

The basic configuration of Huawei OLT

The basic configuration of Huawei OLT
Frame: not sold separately, bundling selling
The main control board: general is the dual master control, one as working control board the other as redundancy, commonly used is SCUN, MCUD (MA5608T).
Power supply board: general is the dual power supply, one as working control board the other as redundancy, commonly used is PRTE (DC), MPWC (DC), MPWD (AC)
Ascending plate: GICF, GICG, X2CS etc.
GPON service board: GPBD, GPFD etc.
Software: general has been installed in the main control board SCUN.

The frame of  OLT:
4-14 OLT 机框

Huawei SmartAX MA5600T is World’s first OLT that integrates convergence and switching with high density and capacity; smooth evolution, supports GPON, 10G PON and 40G PON, The MA5600T series product includes the large-capacity MA5600T (MA5680T in China market), the medium-capacity MA5603T (MA5683T in China market) and small capacity MA5608T (Support both AC and DC).

The OLT products:
MA5600T, MA5603T, MA5608T, MA5680T, MA5683T.

If you want to purchase the Huawei OLT, Thunder-link is the best choice, competitive price for them. You can get more information from our website: http://www.Thunder-link.com, or send email to Sales@Thunder-Link.com to get a quote.

The information of Thunder-link.com:
Thunder-link.com is a world leading Huawei networking products distributor, we wholesale original new Huawei networking equipments, including Huawei switches, Huawei routers, Huaweisymantec security products, Huawei IAD, Huawei SFP and other Huawei networking products. Our customers include telecom operators, Huawei resellers, ISP and system integrators. Right now most of our sales are contributed by regular customers. Our HCIE headed technical team can provide network design, products installation and configuration, trouble shooting etc.

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