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Industrial Ethernet Switch User Manual

3onedata proprietary and confidential

Number of discarded normal data packets because of safety control

Pause

Ethernet control frames of protocol 0x8808 received by the port, in full duplex mode;

this data packet is used to control frequency of data sending.

Undersize

Number of data packets (including FCS) less than 64 bytes

Oversize

Number of data packets (including FCS) more than 1518 or 1522 bytes (Enable

VLAN)

Fragments

Number of incorrect or incomplete FCS data packets (including FCS) less than 64

bytes

Jabber

Number of incorrect or incomplete FCS data packets (including FCS) more than 1522

bytes

SysbolErr

Number of data packets which is incorrect, incomplete or including invalid characters

(including FCS) between 64 bytes and 1518/1522 bytes (Enable VLAN)

11.2 TX frame statistics

Содержание MES600 Series

Страница 1: ...MES600 Series Managed Industrial Ethernet Switch User Manual Version 02 Issue Date 2018 08 16 Industrial Ethernet Communication Solutions Expert 3onedata Co Ltd ...

Страница 2: ... product service or features should be constrained by 3ondedata commercial contracts and clauses The whole or part product service or features described in this document may beyond purchasing or using range 3onedata won t make any statement or warranty for this document content unless any other appointment exists Due to product version upgrading or other reason this document content will be upgrad...

Страница 3: ...Baiwangxin High Technology Industrial Park Song Bai Road Nanshan District Shenzhen 518108 China Technology support tech support 3onedata com Service hotline 86 400 880 4496 E mail sales 3onedata com Fax 86 0755 26703485 Website http www 3onedata com ...

Страница 4: ...ion and maintenance On site technical support and maintenance staff Hardware engineer Text Format Convention Format Description Words with represent the interface words e g The port number Multi level path is separated by Such as opening the local connection path description Open Control Panel Network Connection Local Area Connection Light Blue Font Represent the words click to achieve hyperlink F...

Страница 5: ...ttention to the notes on the mark improper operation may cause personal injury Make a necessary supplementary instruction for operation description Configuration operation or tips for device usage Pay attention to the operation or information to ensure success device configuration or normal working Revision Record Version NO Revision Date Revision Description 01 2018 04 11 Product release 02 2018 ...

Страница 6: ...4 2 1 DEVICE INFORMATION 4 2 2 PORT INFORMATION 4 3 SERIAL DEVICE SERVER 6 3 1 1 Configure serial port parameter 6 3 1 2 Configure working mode 8 3 1 3 Serial port information 12 4 PORT CONFIGURATION 14 4 1 PORT SETTINGS 14 4 2 BANDWIDTH MANAGEMENT 16 4 2 1 Bandwidth Management 16 4 3 STORM SUPPRESSION 16 5 L2 FEATURES 18 5 1 VLAN 18 5 1 1 VLAN 18 5 2 STATIC FILTERING 21 6 QOS 23 6 1 QOS CLASSIFIC...

Страница 7: ... PORT STATISTICS 48 11 1 RX FRAME STATISTICS 48 11 2 TX FRAME STATISTICS 49 11 3 TRAFFIC STATISTICS 51 11 4 MAC ADDRESS TABLE APPLICATION OF 100M PRODUCTS 51 12 NETWORK DIAGNOSIS 54 12 1 PORT MIRRORING 54 13 BASIC SETTINGS 56 13 1 LOG INFORMATION 56 13 2 SNTP 56 13 3 DEVICE ADDRESS 58 13 4 SYSTEM IDENTIFICATION 59 13 5 SYSTEM FILE UPGRADE 60 13 6 SYSTEM LOGOUT 62 14 FAQ 63 14 1 SIGN IN PROBLEMS 63...

Страница 8: ...s Hardware and Software System Requirements CPU Above Pentium 586 Memory Above 128MB Resolution Above 1024x768 Color Above 256 color Browser Above Internet Explorer 6 0 Operating System Windows XP Windows 7 1 2 Setting IP Address of PC The switch default management as follows IP Setting Default Value IP Address 192 168 1 254 Subnet Mask 255 255 255 0 While configuring the switch via Web Before rem...

Страница 9: ...dress of the current PC is 192 168 5 60 change the network segment 5 of the IP address to 1 Operation Steps Amendment steps as follows Open Control Panel Network Connection Local Area Connection Properties Step 1 Internet Protocol Version 4 TCP IPv4 Properties Change the selected 5 in red frame of the picture below to 1 Step 2 Click OK IP address modifies successfully Step 3 End Step 4 In windows ...

Страница 10: ...login Step 4 window Notes The default username and password are admin12345 please strictly distinguish capital and small letter while entering Default username and password have the administrator privileges WebServer will provide 3 times opportunities to enter username and password If enter the error information for 3 times the browser will display a Access denied to reject access message Refresh ...

Страница 11: ...ation the upper right corner of display is the current time as shown in figure 2 1 Device information Equipment information mainly display basic information Switch include equipment type equipment name description of the equipment equipment hardware version number firmware version the Switch of MAC address contact method 2 2 Port information Switch a total of 8 ports ports can confirm whether the ...

Страница 12: ...below you can see port 4 is LINK and port connection status as FULL speed is 100M and port type for the TX RJ45 LINK Indicates that the port is in a connected state LOS Indicates that the port is not connected FULL Indicates that the port State is full duplex HALF Indicates that the port State is half duplex if the ports are not connected the port status is HALF ...

Страница 13: ... port parameter Serial port configuration menu Optional data Description Serial port working mode RS 232 full duplex RS 422 full duplex RS 485 half duplex Serial work mode Baud rate bps 300 115200 10pcs band rate optional Baud rate choice Parity None Even Odd Mark Spa ce Checkout choice Data bits bits 5 6 7 8 The parameter of serial Stop bits bits 1 1 5 2 The last of the data package Max frame spa...

Страница 14: ...s Baud rate It is a parameter to check the communication speed It shows to transfer how many bits in 1 second For example 300 baud rate means have 300 bits transferred in 1 second Parity Parity bits It is a simple method to checkout fault in serial communication have 4 types Even Odd Mark Space Data Bits It is a parameter to check the actual data bits in communication When PC send a Packet actual ...

Страница 15: ...not have data then send automatic Can configure 1 500 COM mode Web interface default work mode 3 1 2Configure working mode Working mode configuration menu Configuration menu Data option Description Sessions 1 4 Working mode Based mode TCP Client TCP Server UDP TcpAuto Choice serial port working mode default is not open Advanced mode Tcp Server UDP Local port 1 65535 COM1 default is 30000 COM4 defa...

Страница 16: ...ide serial device server will connect forwardly to TCP IP network equipment such as PC It need to setup to tell serial device server to connect which network address and TCP port number when conditions is matched After creating socket serial device server will sent the data received from each serial port through socket On the contrary the data received from socket will be sent to the corresponding...

Страница 17: ...data transfer the connection will cut off If set 0 means do not care how much time vacancy SWITCH do not cut off voluntary The range is 1 65535s Default is 300s The figure below is the configuration interface of TCP Client Mode Session 1 is setting to local address available for router 192 168 2 168 the Destination Port connected to serial port is host computer 192 168 2 168 31000 port Connection ...

Страница 18: ...nt setting is Local port Target address and Target port It can support point to point and multicast UDP setting method is the same as TCP TCP Auto In this Mode serial device server can act as server or client Before setting this Mode please ensure related parameters are correct when you turn on the server mode client mode is automatically disconnected RealCom RealCom support TCP Server and TcpAuto...

Страница 19: ...with NP30XT series can choice 0 4 channel connect at the same time Notes Address pool just support Type A and type B address Start address and end address must in the network segment Start address value must less than or equal to end address 3 1 3Serial port information It main function of serial port information Display incorrect data statistics and connection information that send by serial port...

Страница 20: ...Industrial Ethernet Switch User Manual 3onedata proprietary and confidential 13 Copyright 3onedata Co Ltd ...

Страница 21: ...iguration Items Description Port Port name corresponding to mark in panel Type Display port type TX or FX Speed Display configurable speed of port or auto negotiation mode Duplex Auto negotiation AUTO full duplex FULL half duplex HALF optional default mode is auto negotiation mode Enable Configurable port enables or disable Selecting square frame is for enable the corresponding port It can not tra...

Страница 22: ...t 2 by port information for a query you can view the status of port 1 and port 2 Port settings and restarts the device when you are finished View port information column of the port State rate whether or not in accordance with reality Notes When one end is auto negotiation and the other end to force rate setting according to the Ethernet standard consultation rate for corresponding obligatory rate...

Страница 23: ...nter into the following interface Egress Bandwidth and Ingress Bandwidth Configuration stands for no limitation for the speed the others are corresponding speed As shown in following figure the forcible egress rate of Port 5 is 50Mbps Only need to select 50Mbps in egress rate setting of Port 5 The bandwidth of Port 5 as receiver is still 80Mbps but the forcible egress bandwidth of Port 5 is 50Mbps...

Страница 24: ...on is sent from one point to another point In this case there is just one sender and one receiver Destination lookup failure frame the MAC address of this data frame doesn t exist in inside index It needs to transmit to all the ports including unicast and multicast flow Notes The maximum length of Ethernet data frames is 1518 bytes and each 64Kb of data communication includes about 6 Ethernet data...

Страница 25: ...d the new ID identity will create a new forwarding rule all ports must belong to one or more VLAN 1 Add Item Group name can use any valid characteristic in port based VLAN The same group name means you need to modify the members of the group A new group name means the new transmission rule is built The transmission item is not more than 32 in port based VLAN It just changed the inside exchange rul...

Страница 26: ...1 4094 Step 1 Choice port and add into VLAN table if do not choice the port it displayed on right Step 2 side U means the port will be added in VLAN table and no tag of the egress frame T means the port will be added in VLAN table and no need tag the egress frame The default setting of the port is PVID change the VLAN group member s port PVID Step 3 the same as VID For special application and PVID...

Страница 27: ... did not have VLAN mark created VLAN mark with default priority and port VID and add to data frame priority did not change If data have VLAN mark the data frame did not change priority did not change Replace identification VID with default VID If data did not have VLAN mark created VLAN mark with default priority and port VID and add to data frame if data have VLAN mark VLAN mark s VID will be rep...

Страница 28: ...time Switch supports up to 15 static multicast filtering Button Add Edit Delete were used for add delete static Multicast MAC address Join port is used to choice the transmit port of static MAC address can point to 1 or more transmit port Knock Add Delete static MAC address will be updated For example add MAC address 01 00 00 00 00 03 member is port 2 3 4 Multicast MAC address is 1 of highest byte...

Страница 29: ...etary and confidential 22 Copyright 3onedata Co Ltd All none multicast address did not allow adding in this table and the format must according to XX XX XX XX XX XX did not have space or other illegal character otherwise will be display warning information ...

Страница 30: ...d is less than bandwidth the message of each priority queues can send normally if the port keeps sending in full speed then the rest of the message of each priority queues will be discarded Strict priority it refers to QoS deals with the message from high priority to low priority If the low priority queues is full but the message of high priority queues don t finish the message of low priority que...

Страница 31: ...nsferred according 8 4 2 1 ratio 6 2 CoS IEEE P802 1p is the name of a task group active during 1995 98 responsible for adding traffic class expediting and dynamic multicast filtering to the IEEE 802 1D standard Essentially they provided a mechanism for implementing Quality of Service QoS at the media access control MAC level The group s work with the new priority classes and Generic Attribute Reg...

Страница 32: ...rchitecture provides each transport packets in the network are classified into different categories classified information is contained in the IP packet header DiffServ architecture using the first 6 bits of IP packet header TOS Type of Service to carry the packets classified information This definition is only for the lower 6 bits one number does not exceed 63 This definition supports both IPv4 T...

Страница 33: ...has 3 down process so spent 12 DSCP values 10 12 14 18 20 22 26 28 30 34 36 38 The priority value of the device 1 16 is defined as the lowest priority as the first queue Priority value 17 32 is defined as the second queue the priority value 33 48 is defined as the third queue the priority value 49 64 is defined as the fastest queue the highest priority ...

Страница 34: ... switches When network is broken relay for failure alarm will be activated Redundant organization of SwRingTM enable backup link to recover network instantly Self developed patented technology for SW Ring network can realize the intelligent redundancy for industrial Ethernet switch which can make you easily and conveniently establish redundant Ethernet and can facilitate the quick recovery of any ...

Страница 35: ...ancy protocol is none can configure it through Settings Ring V3 support Single ring coupling ring chain ring and Dual_homing Method to enable Ring V3 Enable Ring V3 Select Ring V3 in Settings drop down menu figure as shown below Step 1 After select Ring V3 Configuration interface is as figure below we can see Ring V3 Step 2 support 4 different ring group Single Coupling Chain and Dual_homing Enabl...

Страница 36: ...tralized management of several Rings Method to enable Chain and Dual Homing is similar to that to enable Single Ring and Coupling Ring It only needs to select corresponding items in Type 1 Method to enable Ring V3 coupling ring The architecture of coupling ring as figure below Operation method Select Ring V3 enable ring group 1 and 2 Hello_time can be disable if enable Step 1 time of sending Hello...

Страница 37: ... 109 device s ring port as port 1 and port 2 in ring group 1 network ID 1 Step 6 type single ring Set 102 103 104 device s ring port as port 4 and port 5 in group 1 network ID 2 type single ring Connect 100 104 devices port 4 and port 5 with network cable Connect 105 109 Step 7 devices port 1 and port 2 with network cable Connect 101 device s port 1 to 106 device s port 4 with network cable Connec...

Страница 38: ...f Device 109 to normal port of Device 102 and 103 Chain is finished Notes Port can not be trunking setting when it is already Ring port In the same single ring identity must be consistent otherwise it will not build a ring and can not communicate All ring ports in the VLAN settings must be TRUNK tagged VLAN member otherwise can not communicate To form tangent ring or other complex rings should pay...

Страница 39: ...or the network administrator as illustrated by the problem discussed in an on line Cisco document In 2001 the IEEE introduced Rapid Spanning Tree Protocol RSTP as 802 1w RSTP provides significantly faster spanning tree convergence after a topology change introducing new convergence behaviors and bridge port roles to do this RSTP was designed to be backwards compatible with standard STP While STP c...

Страница 40: ...g Discarding Learning Forwarding Don t join RST structure don t participate in RSTP running RSTP switch port states Blocking A port that would cause a switching loop if it were active No user data is sent or received over a blocking port but it may go into forwarding mode if the other links in use fail and the spanning tree algorithm determines the port may transition to the forwarding state BPDU ...

Страница 41: ...to increase the bandwidth between the switch and the network node Trunking is a packaging technology it is a peer to peer link both ends of the link are switches it can be a switch and a router and also can be a host switch or router Based on port trunking function that allows between two or more ports between switches switches and routers hosts the switch or router connected in parallel to provid...

Страница 42: ... more 4 1 port cannot exist in 2 trunking group Notes The trunking groups require all the attributes can be the same including speed duplex STP state etc If you do not confirm the STP state please disable RSTP function or close others leaving only one STP channel Port 1 as the system reserved cannot be used as trunking The ports of having been set to the port aggregation that cannot be set to ring...

Страница 43: ...he current second layer connection It should be noted that LLDP is only a remote device status information discovery protocol it can t complete the network device configuration and port control and other functions Configuration item meaning Disable The switch will not send the LLDP message and will reduce the LLDP message received from the neighbor Enable The switch will send the LLDP message whic...

Страница 44: ...ent address is the address of the network management system identification and management Management address can clearly identify a device it is conducive to the network topology network management network management The management address is encapsulated in the Management Address TLV field of the LLDP message and is sent to the neighbor node ...

Страница 45: ...rity and Observer authority Observer just had authority to check the status of switch Administrator had the authority to configure the parameters of the switch Index User index indicates which group of users There are three user indexes in drop down list Access level administrator have the right to check and configure all settings observer have the right to check all settings merely Login name The...

Страница 46: ...se this equipment as a DHCP server by setting the static address table realization this equipment is able to assign IP addresses to other devices connected to this equipment For example If the device is a turn on DHCP Server functionality 2 sets the static address table 192 168 1 19 corresponds to port 1 192 168 1 20 port 2 Unit b opens automatically obtain an IP address feature if the device is c...

Страница 47: ...to a valid time Range from 1 360 hours 9 3 MAC port lock Static MAC address table Static MAC address is different from dynamic MAC address Once the static address is added the address will remain in effect before deleting it cannot be limited by the maximum aging time Static address list records the static address of ports In the static address list one MAC address corresponds to one port if try t...

Страница 48: ...address requests a valid input from the user will display warning messages if you enter an invalid MAC address Port field is used to select a static MAC address forwarding ports you can specify one or more forward ports Click Add Edit and Delete will trigger the static MAC address forwarding table updates Notes This function is a security mechanism be careful to confirm the setting otherwise be us...

Страница 49: ...Industrial Ethernet Switch User Manual 3onedata proprietary and confidential 42 Copyright 3onedata Co Ltd ...

Страница 50: ...s the software of the server running in the network device NMS can send Get Request Get Next Request and Set Request message to Agent After Agent gets those messages it will read or write according to the message type to create Response message and send the Response message back to NMS Agent will also send Trap message to NMS when the device is abnormal SNMP Version Currently SNMP Agent of the dev...

Страница 51: ...s UDP Port 161 SNMP and 162 SNMP traps based on TCP IP protocol SNMP protocol agent is existed in network device MIB information specific to the device is uses as device connector These network devices can be monitored or controlled through the agent When trap event happens a message is transmitted by SNMP Trap an available trap receiver can get this trap information SNMP supports 3 kinds of basic...

Страница 52: ...an get the trap information If the trap receiver cannot get trap information please check network setting and connecting Please pay attention to the privilege of Read and Write in SNMP Explorer 10 2 Email Warning Please make sure the switch can access internet regularly if use Email Warning The gateway of the switch and local area network must identical Email warning function will send the warn in...

Страница 53: ...unusual status can inform administrator in time and repair the status of device quickly can avoid more lose Relay warning input type Close Open Once select close the light will be bright when alarms have Relay will be in open status Power alarm Switch provided dual DC power supply AC power supply did not have alarm if one power supply had problem another will support power supply immediately dual ...

Страница 54: ...al 3onedata proprietary and confidential 47 Copyright 3onedata Co Ltd Note In default status the type of relay output is open the alarm light is OFF and have no alarm relay alway open When the device have alarm the light is ON relay close ...

Страница 55: ...lculate the data packets in a fixed time included transmit and receive data packets Operate method Start to calculate after select clear 11 1 RX frame statistics Unicast Numbers of the unicast data packets received by the port Multicast Numbers of the multicast data packets received by the port Broadcast Numbers of the broadcast data packets received by the port Drop ...

Страница 56: ...g Undersize Number of data packets including FCS less than 64 bytes Oversize Number of data packets including FCS more than 1518 or 1522 bytes Enable VLAN Fragments Number of incorrect or incomplete FCS data packets including FCS less than 64 bytes Jabber Number of incorrect or incomplete FCS data packets including FCS more than 1522 bytes SysbolErr Number of data packets which is incorrect incomp...

Страница 57: ...of conflict Pause Ethernet control frames of protocol 0x8808 sent by the port in full duplex mode this data packet is used to control frequency of data sending Collision Number of conflicts encountered in the port while sending data Multiple Collision Number of successful output packets collision more than 1 time Late Collision Numbers of packets less than 64 bytes when a conflict is detected Conf...

Страница 58: ...port Broadcast Number of broadcast data packets sent and received by the port Error Number of error packets because of some reasons sent and received by the port 11 4 MAC address table MAC Media Access Control address is the network device hardware identification the switch to forward packets based on MAC addresses The MAC address is unique which ensures correct packet forwarding Each switch maint...

Страница 59: ...h will not be aging Regardless of the device is connected to the switch port happen to the MAC address table MAC address and port corresponding relationship always will not change the relationship is completely controlled by the IEEE 802 1X authentication server Static MAC address after the switch is powered restart will disappear Permanent static MAC addresses permanent MAC address generated thro...

Страница 60: ... displayed VLAN value is 0 Permanent static address configured in the previous static MAC address port list need to modify the corresponding item when port changed Multicast address list displays the IGMP snooping item in the address list here all unicast address MAC address aging time is 300 seconds the port is disconnected our parent program to clear all the corresponding port items ...

Страница 61: ... a monitored port User can appoint the direction of monitored message such as only monitoring of transmitted messages of appointed port The device configures port mirroring function through port mirroring group Each group includes a monitored port and a group of mirror ports Total bandwidth of mirroring is not more than that of monitored port It is good to monitor and manage its internal network d...

Страница 62: ...nd confidential 55 Copyright 3onedata Co Ltd Note This function is not often used Otherwise other port based higher management function like RSTP IGMP SNOOPING Port mirroring function can only deal with the normal FCS packets It cannot deal with error data frames ...

Страница 63: ...be recorded The all information boot information handing information linkage information 13 2 SNTP NTP Network Time Protocol is a protocol and software implementation for synchronizing the clocks of computer systems over packet switched data network It provides coordinated universal time including scheduled adjustments No information about time zones or daylight saving time is transmitted this inf...

Страница 64: ... The local time in neighboring zones would differ by one hour And the variation in the position of the sun from one end of the zone to the other east vs west would be at most 1 24 of the sky Most of the 25 nautical time zones specifically UTC 11 to UTC 11 are indeed defined this way and are 15 of longitude wide An hourly zone in the central Pacific Ocean is split into two 7 5 wide zones UTC 12 by ...

Страница 65: ...internet please enter the available and correct gateway and DNS address IP Address IP address is a address of 32 bits length which is assigned to the device on the internet The IP address consists of two fields the network number field net id and the Host ID field host id For can conveniently manage IP address IP addresses are divided into five categories Subnet Mask Mask is corresponding 32 bits ...

Страница 66: ...to reboot interface figure as shown below Knock OK button after confirmation device will be logout After 20 seconds know menu bar and back to WEB manged login interface Notes Before reboot please save all configurations Otherwise all configuration will be lost 13 4 System identification In System Identification interface we can see Model Name Description Serial NO and Contact Information We can mo...

Страница 67: ...ce length is not more than 16 bytes Description A brief description to a device the length is not more than 16 bytes Serial No Display Installation Location of the device the length is not more than 30 bytes 13 5 System File Upgrade The menu included 4 functions Factory default Download Configuration upload configuration upgrade firmware ...

Страница 68: ...Click OK Step 5 Notice the IP address will be 192 168 1 254 Open a new interface input 192 168 1 254 to make a new configuration 2 Download Configuration If you know the IP address of the device user name and password Use IE to login Web interface Step 1 Click System Management Step 2 Click System File Update Step 3 Choose Download Configuration Step 4 Click Download Step 5 Choose the name of the ...

Страница 69: ... the file Step 5 Click Upgrade Step 6 A suggestion interruption of power is not allowed during uploading confirm it Notes Load factory default will result in all status be in factory default settings the IP could be static IP address 192 168 1 254 Upload the configuration file in the new configuration if static IP is not in the same network segment the website will not be opened Use dynamic IP set...

Страница 70: ...assword the password can be initialized by restoring factory setting specific method is adopt BlueEyes_Ⅱ software to search and use restore factory setting function to initialize the password 3 Is configuring via WEB browser same to configuring via BlueEyes_Ⅱ software Both configurations are the same without conflict 14 2 Configuration Problem 1 How to configure the device restore default setting ...

Страница 71: ... tests Connected computer and switch ports keep invariant change other network cable Connected network cable and switch port keep invariant change other computers Connected network cable and computer keep invariant change other switch port If the switch port faults are confirmed please contact supplier for maintenance 5 How about the order of port self adaption state detection The port self adapti...

Страница 72: ...card works abnormally troubleshooting eliminate the terminal device fault Not connected to the power socket troubleshooting connected to the power socket Interface rate doesn t match the pattern troubleshooting examine whether the device transmission speed matches the duplex mode 3 Ethernet copper port and fiber port indicator are connected normally but can t transmit data what s the reason When t...

Страница 73: ...roubleshooting optical fiber network cable optical cable cannot be arranged with power line and high voltage line Network cable is disturbed by static electricity or surge Troubleshooting change the shielded cable or install a lightning protector High and low temperature influence troubleshooting check the device temperature usage range ...

Страница 74: ...mproper usage accident natural disaster incorrect operation or improper installation In order to ensure that consumers benefit from our company s managed switch products consumers can get help and solutions in the following ways Internet service Call technical support office Product repair or replacement 15 1 Internet Service More useful information and tips are available via our company website W...

Страница 75: ...r the product repair replacement or return customers should firstly confirm with the company technical staff and then contact the company salesmen and solve the problem According to the company s handling procedure customers should negotiate with our company s technical staff and salesmen to complete the product maintenance replacement or return ...

Страница 76: ...l 69 Copyright 3onedata Co Ltd 3onedata Co Ltd Headquarter address 3 B Zone 1 Baiwangxin High Technology Industrial Park Song Bai Road Nanshan District Shenzhen Technology support tech support 3onedata com Service hotline 86 400 880 4496 Official Website http www 3onedata com ...

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