CN102143414B - Method for implementing network connection test between local-side device and terminal device in EPON (Ethernet passive optical network) - Google Patents
Method for implementing network connection test between local-side device and terminal device in EPON (Ethernet passive optical network) Download PDFInfo
- Publication number
- CN102143414B CN102143414B CN 201110131939 CN201110131939A CN102143414B CN 102143414 B CN102143414 B CN 102143414B CN 201110131939 CN201110131939 CN 201110131939 CN 201110131939 A CN201110131939 A CN 201110131939A CN 102143414 B CN102143414 B CN 102143414B
- Authority
- CN
- China
- Prior art keywords
- local side
- side apparatus
- test
- result
- described local
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention relates to a method for implementing network connection test between a local-side device and a terminal device in an EPON (Ethernet Passive Optical Network), comprising the following steps of: after the local-side device receives an analogue dialing test instruction, establishing a virtual interface, and performing a PPPOE (Point-To-Point Protocol Over Ethernet) dial-up linkage via the virtual interface to detect whether the network connection is normal. By using the method provided by the invention, network managers can judge whether the Ethernet ports of devices dispersed at home of each user or each corridor can normally use a network access service after issuing a remote order in a centre machine room via the local-side device to perform related operations, thus the remote station opening mounting configuration acceptance check is realized, without performing filed test for acceptance check at home of each user or each corridor by engineering workers; therefore, the network connection test method between the traditional local-side device and the terminal device is simplified, the test efficiency and the preparation rate are improved, and the influence on the normal life of the user is eliminated; furthermore the realization mode is simple and convenient, the operation cost is low and the application range is wider.
Description
Technical field
The present invention relates to the Ethernet passive optical network field, the particularly professional checking and accepting technology of the beginning in gigabit ethernet passive optical network field specifically refers to realize between local side apparatus and terminal equipment among a kind of EPON the method for network connection test.
Background technology
When setting up Access Network beginning based on Ethernet passive optical network EPON technology at present, after needing the engineering staff to install the equipment of user side, the network configuration personnel of notice local side, dispose the relevant configuration of the equipment of this user port by remote network management, acceptance of work personnel carry out the PPPOE Acceptance Test of dialling up on the telephone to this locality of ustomer premises access equipment by the actual user of computer use test number of the account simulation then, could guarantee this installed device like this to the correctness of the relevant configuration of the physical link between the service server and equipment itself, think that follow-up customer service is opened to do assurance.
Present way has following defective:
(1) the tester this locality that must arrive ustomer premises access equipment is tested, and the installation of ustomer premises access equipment generally all relatively disperses, and all is installed on the wall of user's family or corridor usually; So not only waste the plenty of time of engineering test software, and may also need to take time and preengage just can advance user's family and test with the user.Need into user's family or corridor to a certain degree to bother the user simultaneously, influence user's normal life.
(2) if find allocation problem in the on-the-spot test, must long-range network configuration personnel by phone contact local side be configured the inspection affirmation, see whether omit configuration or have a configuration error, like this AC mode by phone reduce greatly with respect to the operating efficiency of confirming face to face and the accuracy of working not high yet.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, providing a kind of can dial up on the telephone at long-range local side apparatus execution analog subscriber, whether correct with configuration with the physical link that checks each port of ustomer premises access equipment, thereby simplify the network connection method of testing of existing local side and terminal room, improve testing efficiency and preparation rate, eliminate the influence to user's normal life simultaneously, and implementation is easy, implementation cost is cheap, and range of application realizes the method for network connection test comparatively widely among the EPON between local side apparatus and terminal equipment.
In order to realize above-mentioned purpose, the local side apparatus among the EPON of the present invention comprises CPU and the memory cell that is connected with CPU, realizes between local side apparatus and terminal equipment that the method for network connection test comprises the steps:
(1) described local side apparatus receives maintenance instruction according to local side user operation;
(2) described local side apparatus judges whether described maintenance instruction is the analog dialup test instruction, if, then enter step (3), if not, then enter step (9);
(3) described local side apparatus detects the configuration parameter of described maintenance instruction;
(4) if by detecting, then enter step (5), if do not pass through, then enter step (8);
(5) described local side apparatus is created virtual interface based on virtual LAN VLAN according to the configuration parameter of described maintenance instruction at CPU;
(6) described local side apparatus is created the PPPOE dial-links according to described virtual interface, and carries out the PPPOE dialing by this virtual interface;
(7) described local side apparatus judges that according to described PPPOE dialing result whether dialing is successful, is stored in described memory cell with this judged result, and enters step (11);
(8) described local side apparatus detects error result with described analog dialup test instruction configuration parameter and deposits described memory cell in, and enters step (11);
(9) described local side apparatus judges whether described maintenance instruction is analog dialup test result query statement, if, then enter step (10), if not, then enter step (11);
(10) described local side apparatus obtains corresponding simulating dialup test result according to described analog dialup test result query statement from described memory cell, and enters step (11);
(11) finish and withdraw from.
Wherein, the configuration parameter of maintenance instruction comprises: command code, analog dialup test lead slogan, the analog dialup of distinguishing analog dialup test instruction and analog dialup test result query statement are tested user name and the password of vlan number, PPPOE dial up account.
Realize between local side apparatus and terminal equipment in this Ethernet passive optical network that described local side apparatus detects the configuration parameter of maintenance instruction, may further comprise the steps in the method for network connection test:
(31) described local side apparatus detect the used vlan number of nominative testing in the described maintenance instruction whether with the current VLAN configuration conflict of nominative testing port;
(32) if the not result by detecting is then returned in conflict;
(33) if do not conflict, then return the result by detecting.
Realize in the method for network connection test in this Ethernet passive optical network between local side apparatus and terminal equipment, described local side apparatus detects error result with analog dialup test instruction configuration parameter and deposits memory cell in, and be specially: described local side apparatus deposits the test result of " configuration error " in described memory cell.
Realize in the method for network connection test in this Ethernet passive optical network between local side apparatus and terminal equipment, described local side apparatus detect the used vlan number of nominative testing in the maintenance instruction whether with the current VLAN configuration conflict of nominative testing port, be specially: local side apparatus detects the used vlan number of specified test in the maintenance instruction whether in all vlan lists of the current support of designated port.
Realize between local side apparatus and terminal equipment in this Ethernet passive optical network in the method for network connection test that described local side apparatus judges that according to PPPOE dialing result whether dialing is successful, may further comprise the steps:
(71) described local side apparatus judges whether obtain public network IP address on the described virtual interface according to described PPPOE dialing result;
(72) if, dial-up success then, and return the test result of " link connection ";
(73) if not, then dialing is failed, and returns the test result of " link is not communicated with ".
Adopted the method that realizes the network connection test in the Ethernet passive optical network of this invention between local side apparatus and terminal equipment, after its local side apparatus receives the analog dialup test instruction, whether set up virtual interface, and carry out the PPPOE dial-links by this virtual interface, it is normal to detect network connection with this.Thereby utilize this method that the network management personnel is issued by local side apparatus at central machine room and judge after remote command is carried out associative operation whether the ethernet port of the equipment that is dispersed in each user's family or corridor can normally use business of networking, realize remote exchange deployment installation configuration examination, do not go field test to carry out an acceptance inspection and do not need the engineering staff in each user family or in each corridor, thereby simplify the network connection method of testing of existing local side and terminal room, improve testing efficiency and preparation rate, eliminate the influence to user's normal life simultaneously, and implementation is easy, implementation cost is cheap, and range of application is comparatively extensive.
Description of drawings
Fig. 1 is the schematic flow sheet of realizing the method for network connection test in the Ethernet passive optical network of the present invention between local side apparatus and terminal equipment.
Fig. 2 is the method flow chart in actual applications of realizing the network connection test in the Ethernet passive optical network of the present invention between local side apparatus and terminal equipment.
Embodiment
In order more to be expressly understood technology contents of the present invention, describe in detail especially exemplified by following examples.
See also shown in Figure 1ly, be to realize between local side apparatus and terminal equipment in the Ethernet passive optical network of the present invention the schematic flow sheet of the method for network connection test.
Local side apparatus comprises CPU and the memory cell that is connected with CPU in the Ethernet passive optical network, and described method may further comprise the steps:
(1) described local side apparatus receives maintenance instruction according to local side user operation;
(2) described local side apparatus judges whether described maintenance instruction is the analog dialup test instruction, if, then enter step (3), if not, then enter step (9);
(3) described local side apparatus detects the configuration parameter of described maintenance instruction;
(4) if by detecting, then enter step (5), if do not pass through, then enter step (8);
(5) described local side apparatus is created virtual interface based on virtual LAN VLAN according to the configuration parameter of described maintenance instruction at CPU;
(6) described local side apparatus is created the PPPOE dial-links according to described virtual interface, and carries out the PPPOE dialing by this virtual interface;
(7) described local side apparatus judges that according to described PPPOE dialing result whether dialing is successful, is stored in described memory cell with this judged result, and enters step (11);
(8) described local side apparatus detects error result with described analog dialup test instruction configuration parameter and deposits described memory cell in, and enters step (11);
(9) described local side apparatus judges whether described maintenance instruction is analog dialup test result query statement, if, then enter step (10), if not, then enter step (11);
(10) described local side apparatus obtains corresponding simulating dialup test result according to described analog dialup test result query statement from described memory cell, and enters step (11);
(11) finish and withdraw from.
Wherein, the configuration parameter of described maintenance instruction comprises: command code, analog dialup test lead slogan, the analog dialup of distinguishing analog dialup test instruction and analog dialup test result query statement are tested user name and the password of vlan number, PPPOE dial up account.
In a kind of more preferably execution mode, described local side apparatus detects the configuration parameter of maintenance instruction, may further comprise the steps:
(31) described local side apparatus detect the used vlan number of nominative testing in the described maintenance instruction whether with the current VLAN configuration conflict of nominative testing port;
(32) if the not result by detecting is then returned in conflict;
(33) if do not conflict, then return the result by detecting.
In a kind of further preferred embodiment, described local side apparatus detects error result with analog dialup test instruction configuration parameter and deposits memory cell in, and be specially: described local side apparatus deposits the test result of " configuration error " in described memory cell.
In another kind of further preferred embodiment, described local side apparatus detect the used vlan number of nominative testing in the maintenance instruction whether with the current VLAN configuration conflict of nominative testing port, be specially: local side apparatus detects the used vlan number of specified test in the maintenance instruction whether in all vlan lists of the current support of designated port.
In preferred execution mode, described local side apparatus judges that according to PPPOE dialing result whether dialing is successful, may further comprise the steps:
(71) described local side apparatus judges whether obtain public network IP address on the described virtual interface according to described PPPOE dialing result;
(72) if, dial-up success then, and return the test result of " link connection ";
(73) if not, then dialing is failed, and returns the test result of " link is not communicated with ".
In an application of the invention, as shown in Figure 2, the method that realizes the network connection test in the Ethernet passive optical network of the present invention between local side apparatus and terminal equipment comprises that the analog subscriber computer dials up on the telephone and handles operation and realize the operation of remote testing command process.
Be to be equal to surf the Net after the user uses a computer expert to cross to be undertaken by computer then on the ethernet port that netting twine is connected to ustomer premises access equipment PPPOE to obtain the IP address of public network in the purpose of local side apparatus CPU simulation subscriber dialing online.The rule of setting up the analog dialup condition and following:
A, obtain the relevant parameter of dialing: the password that the user name that the vlan number that business of networking is used, PPPOE number of the account are used, PPPOE number of the account are used, the subscriber equipment ethernet side slogan that needs simulation;
B, must test based on ustomer premises access equipment ethernet side slogan;
The last simulation test state and the test result that have each ethernet port of table detail record in c, the system;
D, carry out the test mode that needs to check earlier this port before the simulation test at every turn, only non-" test " and state under just can carry out proper testing, test otherwise return.
Comprise following parameter in the test command:
(1) command code, explanation begin test or inquiry test result;
(2) port numbers is specified the user port number that needs simulation test;
(3) vlan number is specified the vlan number that needs simulation test;
(4) user name, the user name that simulation test PPPOE dial up account uses;
(5) password, the password that simulation test PPPOE dial up account uses.
Test mode comprises following several:
Do not begin, begin this port from device power and do not carry out test;
Test, this port is tested;
EOT begins this port from device power and carried out once test at least, and maintains test result;
Test result comprises following several:
The configuration at present of configuration error, port does not meet with the configuration data of test request;
Link is obstructed, and port disposes correct at present but can not carry out normal PPPOE by this port and dial up on the telephone;
Test successfully, port arrangement is correct and can carry out normal PPPOE by this port and dial up on the telephone;
Process based on above-mentioned debugging and the simple description simulation of rule pppoe dialup test is as follows:
The test command that receives local side apparatus judges that command operation begins test or inquiry test;
If order is the inquiry test, then from the order parameter list, take out port numbers, by this port numbers test mode and the test result of this port of preserving in the equipment returned to local side by command parameter, the network management personnel of local side can judge easily by this test result whether the data business of networking data configuration of this remote port is correct, and whether this remote port is correct to the physical link between the webserver.
If order is the beginning test command, then from the order parameter list, take out the port numbers that needs test, the user name of operational trials VLAN, PPPOE dialing, the password of PPPOE dialing; Judge the test mode of working as front port by reading database then, if test, then finish this test and simultaneously this state is returned to local side, the network management personnel of local side sees can directly using behind this result and checks that the test result order checks that test result gets final product.If port is not test or the state of EOT, then proof can begin this port is tested, and it is as follows to carry out the detailed step that begins to test:
1, writing database is revised as the test mode of this port and tests;
2, configuration inspection: mainly be the vlan number inspection, check in the vlan list of the current support of port and whether comprise operational trials vlan number specified in the order, if do not comprise then, write this port test of data-base recording result " data collocation error ", with this port test status modifier be simultaneously " EOT ", finish this test.If comprise operational trials vlan number specified in the order in the vlan list of the current support of port, then carry out following operation
3, the virtual interface of the VLAN that mentions in the management ethernet port of CPU is created based on 2, the username and password that imports in the utility command are enabled the PPPOE client and are carried out dial-links to obtain the IP address that online is used by this virtual interface;
4, wait for PPPOE dial-links result, judge whether this virtual interface successfully gets access to the IP address
If do not get access to the IP address in 54 steps, the test result of then writing this port of database update for " link obstructed ", the test mode of revising this port simultaneously for " EOT ".
If correctly get access to the IP address in 64 steps, the test result of then writing this port of database update for " test successfully ", the test mode of revising this port simultaneously is " EOT ".
7, discharge the PPPOE link, finish this test operation.
Adopted the method that realizes the network connection test in the Ethernet passive optical network of this invention between local side apparatus and terminal equipment, after its local side apparatus receives the analog dialup test instruction, whether set up virtual interface, and carry out the PPPOE dial-links by this virtual interface, it is normal to detect network connection with this.Thereby utilize this method that the network management personnel is issued by local side apparatus at central machine room and judge after remote command is carried out associative operation whether the ethernet port of the equipment that is dispersed in each user's family or corridor can normally use business of networking, realize remote exchange deployment installation configuration examination, do not go field test to carry out an acceptance inspection and do not need the engineering staff in each user family or in each corridor, thereby simplify the network connection method of testing of existing local side and terminal room, improve testing efficiency and preparation rate, eliminate the influence to user's normal life simultaneously, and implementation is easy, implementation cost is cheap, and range of application is comparatively extensive.
In this specification, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (4)
1. realize the method for network connection test in the Ethernet passive optical network between local side apparatus and terminal equipment, it is characterized in that described local side apparatus comprises CPU and the memory cell that is connected with CPU, described method may further comprise the steps:
(1) described local side apparatus receives maintenance instruction according to local side user operation;
(2) described local side apparatus judges whether described maintenance instruction is the analog dialup test instruction, if, then enter step (3), if not, then enter step (9);
(3) described local side apparatus detects the configuration parameter of described maintenance instruction, the configuration parameter of described maintenance instruction comprises: command code, analog dialup test lead slogan, the analog dialup of distinguishing analog dialup test instruction and analog dialup test result query statement are tested user name and the password of vlan number, PPPOE dial up account, described local side apparatus detects the configuration parameter of maintenance instruction, may further comprise the steps:
(a) described local side apparatus detect in the described maintenance instruction the used vlan number of nominative testing whether with nominative testing
The current VLAN configuration conflict of port;
(b) if the not result by detecting is then returned in conflict;
(c) if do not conflict, then return the result by detecting;
(4) if by detecting, then enter step (5), if do not pass through, then enter step (8);
(5) described local side apparatus is created virtual interface based on virtual LAN VLAN according to the configuration parameter of described maintenance instruction at CPU;
(6) described local side apparatus is created the PPPOE dial-links according to described virtual interface, and carries out the PPPOE dialing by this virtual interface;
(7) described local side apparatus judges that according to described PPPOE dialing result whether dialing is successful, is stored in described memory cell with this judged result, and enters step (11);
(8) described local side apparatus detects error result with described analog dialup test instruction configuration parameter and deposits described memory cell in, and enters step (11);
(9) described local side apparatus judges whether described maintenance instruction is analog dialup test result query statement, if, then enter step (10), if not, then enter step (11);
(10) described local side apparatus obtains corresponding simulating dialup test result according to described analog dialup test result query statement from described memory cell, and enters step (11);
(11) finish and withdraw from.
2. realize the method for network connection test in the Ethernet passive optical network according to claim 1 between local side apparatus and terminal equipment, it is characterized in that, described local side apparatus detects error result with analog dialup test instruction configuration parameter and deposits memory cell in, is specially:
Described local side apparatus deposits the test result of " configuration error " in described memory cell.
3. realize the method for network connection test in the Ethernet passive optical network according to claim 1 between local side apparatus and terminal equipment, it is characterized in that, described local side apparatus detect the used vlan number of nominative testing in the maintenance instruction whether with the current VLAN configuration conflict of nominative testing port, be specially:
Local side apparatus detects the used vlan number of specified test in the maintenance instruction whether in all vlan lists of the current support of designated port.
4. according to the method that realizes the network connection test in each described Ethernet passive optical network in the claim 1 to 3 between local side apparatus and terminal equipment, it is characterized in that, described local side apparatus judges that according to PPPOE dialing result whether dialing is successful, may further comprise the steps:
(71) described local side apparatus judges whether obtain public network IP address on the described virtual interface according to described PPPOE dialing result;
(72) if, dial-up success then, and return the test result of " link connection ";
(73) if not, then dialing is failed, and returns the test result of " link is not communicated with ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110131939 CN102143414B (en) | 2011-05-20 | 2011-05-20 | Method for implementing network connection test between local-side device and terminal device in EPON (Ethernet passive optical network) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110131939 CN102143414B (en) | 2011-05-20 | 2011-05-20 | Method for implementing network connection test between local-side device and terminal device in EPON (Ethernet passive optical network) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102143414A CN102143414A (en) | 2011-08-03 |
| CN102143414B true CN102143414B (en) | 2013-09-11 |
Family
ID=44410590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110131939 Active CN102143414B (en) | 2011-05-20 | 2011-05-20 | Method for implementing network connection test between local-side device and terminal device in EPON (Ethernet passive optical network) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102143414B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036857A (en) * | 2011-09-29 | 2013-04-10 | 中兴通讯股份有限公司 | Remote simulation method and device for checking and accepting broadband access |
| CN102664833B (en) * | 2012-05-03 | 2015-01-14 | 烽火通信科技股份有限公司 | Home gateway and method for analyzing user online behavior and monitoring network quality |
| CN103701656A (en) * | 2012-09-27 | 2014-04-02 | 中兴通讯股份有限公司 | Testing method and system of broadband access unit |
| CN104079436B (en) * | 2014-07-14 | 2017-03-29 | 武汉大学 | A kind of Element management system of striding equipment in the EPON networks of agreement |
| CN108012284B (en) * | 2017-11-29 | 2021-07-23 | 上海新时达电气股份有限公司 | Method for dial-up networking, terminal equipment and computer readable storage medium |
| CN110572725B (en) * | 2019-07-29 | 2021-11-16 | 烽火通信科技股份有限公司 | Method and system for optimizing PPPoE (point-to-point protocol over Ethernet) dialing efficiency of GPON (gigabit-capable passive optical network) gateway |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1538672A (en) * | 2003-04-18 | 2004-10-20 | 中兴通讯股份有限公司 | Broadband insertion server testing gating and testing method |
| CN1764131A (en) * | 2004-10-22 | 2006-04-26 | 华为技术有限公司 | Protocol testing system and method |
| WO2010115824A2 (en) * | 2009-04-02 | 2010-10-14 | Siemens Aktiengesellschaft | A switching device for terminating a passive optical network |
| CN101938388A (en) * | 2010-09-13 | 2011-01-05 | 中兴通讯股份有限公司 | Loop detection method and device in selective virtual local area network (SVLAN) |
-
2011
- 2011-05-20 CN CN 201110131939 patent/CN102143414B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1538672A (en) * | 2003-04-18 | 2004-10-20 | 中兴通讯股份有限公司 | Broadband insertion server testing gating and testing method |
| CN1764131A (en) * | 2004-10-22 | 2006-04-26 | 华为技术有限公司 | Protocol testing system and method |
| WO2010115824A2 (en) * | 2009-04-02 | 2010-10-14 | Siemens Aktiengesellschaft | A switching device for terminating a passive optical network |
| CN101938388A (en) * | 2010-09-13 | 2011-01-05 | 中兴通讯股份有限公司 | Loop detection method and device in selective virtual local area network (SVLAN) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102143414A (en) | 2011-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102143414B (en) | Method for implementing network connection test between local-side device and terminal device in EPON (Ethernet passive optical network) | |
| CN101212357B (en) | Interface testing method and device | |
| US7826597B2 (en) | Methods and apparatus to handle customer support requests | |
| CN109495308A (en) | A kind of automation operational system based on management information system | |
| JP2007293840A (en) | Event log management system | |
| CN102185738A (en) | Communication equipment hardware host testing system and testing method | |
| CN104753586A (en) | Method and system for acquiring passive optical network (PON) element information | |
| CN101540120B (en) | Network-based system and network-based method for automatically diagnosing experimental wiring | |
| CN109150854B (en) | Dynamic configurable communication protocol conversion system based on XML file | |
| CN110086652A (en) | A kind of management system and its method for service network element in 5G core net | |
| CN112463661A (en) | USB device management system and management method | |
| CN107277193A (en) | A kind of baseboard management controller address management method, device and system | |
| CN109787844A (en) | A kind of distribution master station communication fault fast positioning system | |
| CN106302864A (en) | A kind of IP in order arranges system | |
| CN102291274A (en) | System and method for realizing automatic adaptation of network testing instrument | |
| CN107094091A (en) | A kind of intelligent substation station level network configuration method of calibration and system | |
| CN1261890C (en) | Network card testing method capable of balancing loads | |
| CN107870850A (en) | A kind of efficient the Internet, applications log system | |
| CN103152756A (en) | Automation configuration method for wireless local area network access controller (WLAN AC) | |
| CN100559352C (en) | Utilize home loop to set up online test macro and the method for mainboard management control | |
| CN102480472B (en) | Application program integration login method of enterprise inner network and verification server thereof | |
| CN116455869A (en) | Method and system for efficiently configuring public network domain name based on Kubernetes | |
| CN103647760B (en) | The MMS communication platforms and its access method of a kind of intelligent transformer substation digital protection device | |
| CN213817812U (en) | Test service system based on Router OS is built | |
| CN113660560B (en) | Intelligent substation process layer switch topology real-time verification method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |