CN107071189B - Connection method of communication equipment physical interface - Google Patents
Connection method of communication equipment physical interface Download PDFInfo
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- CN107071189B CN107071189B CN201611066016.8A CN201611066016A CN107071189B CN 107071189 B CN107071189 B CN 107071189B CN 201611066016 A CN201611066016 A CN 201611066016A CN 107071189 B CN107071189 B CN 107071189B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/18—Automatic or semi-automatic exchanges with means for reducing interference or noise; with means for reducing effects due to line faults with means for protecting lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
Abstract
The invention mainly introduces a connection method of a physical interface of communication equipment, which mainly comprises the following operations: connecting the master device and the slave device through a tap of a physical line; the method comprises the steps that the driving enabling states of two ends of a high-availability physical interface are used for ensuring that a line signal source is only used by a master device at the same time; and when the master device is abnormal and cannot be continuously used, the slave devices in the cluster re-confirm the new master device in the network cluster by acquiring the abnormal state of the master device for corresponding processing. The scheme of the invention replaces the existing FOS design, a signal source line is directly plugged into the master-slave equipment through a tap of a physical line, and the master-slave equipment is driven by a corresponding interface of a self high-availability physical interface to determine whether the line signal is enabled or not so as to ensure that the line signal can only be used by the master equipment at the same time. In addition, although the equipment nodes are added, due to the existence of the high-availability physical interface, excessive cost is not consumed, the reliability is extremely high, and the fault risk is reduced.
Description
Technical Field
The invention is applied to the field of hardware equipment communication, is mainly applied to the connection of the traditional telephone line main host computer and can be applied to the connection of computer cluster equipment.
Background
A cluster (cluster) is a group of mutually independent computers interconnected by a high-speed network, which form a group and are managed in a single system mode. A client interacts with a cluster, which appears as a stand-alone server. The cluster configuration is for improved availability and scalability.
When one system in the cluster fails, the cluster software quickly reacts and distributes the tasks of the system to other working systems in the cluster for execution. Given the error-prone nature of computer hardware and software, the primary purpose of high-availability clusters is to make the overall services of the cluster as available as possible. If a primary node in a high availability cluster fails, it will be replaced by a secondary node during this time. The secondary node is typically a mirror image of the primary node. When it replaces the master node, it can take over its identity completely, thus making the system environment consistent for the user.
Ha (high available), a high availability cluster, is an effective solution for ensuring service continuity, and generally has two or more nodes, which are divided into active nodes and standby nodes. The node that is performing the service is usually called the active node, and the node that is a backup of the active node is called the standby node. When the active node has a problem, which causes the running service (task) not to run normally, the standby node will detect this moment and immediately continue the active node to execute the service. Thereby realizing uninterrupted or short interruption of the service.
At present, many connection modes of master and slave devices are managed through an HA (high available), the HA is generally implemented based on a Fail-Over-Switch, for example, the HA of a PSTN physical interface such as a traditional telephone line is implemented based on an FOS, the master and slave devices in a cluster all need to be in heartbeat connection with the FOS, the switching of the line is performed by the FOS, and higher maintenance cost and higher fault risk are caused every time an equipment node is added, such a design cost is higher, the later maintainability is poorer, and there is a higher fault risk.
Disclosure of Invention
The invention aims to provide a connection method of a physical interface of communication equipment, which is used for connecting a master device and a slave device in a cluster network and can ensure that signals of a line can only be processed by the master device at the same time by updating the state of the interface in real time.
In order to achieve the above object, the method for connecting a physical interface of a communication device of the present invention mainly includes the following operations: connecting the master device and the slave device through a tap of a physical line; the method comprises the steps that the driving enabling states of two ends of a high-availability physical interface are used for ensuring that a line signal source is only used by a master device at the same time; and when the master device is abnormal and cannot be continuously used, the slave devices in the cluster re-confirm the new master device in the network cluster by acquiring the abnormal state of the master device for corresponding processing.
Preferably, the high availability physical interface stores four status flag bits:
(1) and (3) power supply state: 1 indicates normal, 0 indicates abnormal
(2) Whether the main chip is normal or not: 1 indicates normal, 0 indicates abnormal
(3) Role states of the master and slave devices: 1 denotes a master device, 0 denotes a slave device
(4) Enabling state of high availability physical interface: 1 represents enabled and 0 represents not enabled.
Meanwhile, the main device periodically scans the self function state, maintains the state flag bits, and periodically sends the self state to the cluster network.
Preferably, after the master device and the slave device are connected through the physical line plug, the master device and the slave device are powered on, and when the initial state is 1100, the master device is determined to be the slave device, and the high-availability physical interface is determined to be in an disabled state; and determining the master device as the election mechanism, wherein the role status flag is set to be 1, the high-availability physical interface enables the concatenation to be 1, and other slave devices in the cluster network keep the startup state.
Preferably, the high availability physical interface of the master device will periodically send its status to the slave device, and the slave device will receive and interpret the status command:
(1) if the state of the master device is: 1111, indicating that all the slave devices are normal and can continue to be in service, and keeping the slave devices in a standby state;
(2) if the state of the master device is: 1110, re-triggering election mechanism to determine master-slave role in network device;
(3) if the state of the master device is: 1101, the master-slave role in the cluster network is disordered, and an election mechanism is triggered to re-determine the master-slave relationship;
(4) if the state of the master device is: 1011, the chip function of the master device is abnormal, but at this time, the high-availability physical interface is still in an enabled state, but obviously cannot be continuously used, at this time, the slave device sends a command to close the high-availability physical interface of the master device, and the election mechanism is retriggered to re-determine the master-slave role in the network.
Preferably, if the master device is abnormally down, the slave device does not receive the status update of the master device within a certain time limit, and then sends a command to the master device to acquire the status, and if no response is generated, it is determined that the master device is down, and then the election mechanism is triggered to reselect the normal device as the new master device to continue to be in service.
Preferably, the implementation method further comprises: when the master device is in normal service, the slave device can acquire the state of the master device in real time, check the state of the master device in real time and update the state of the slave device, and the master device can also send a notifyDataStatus command to update the data information of the slave device in the network, so that the slave device can be ensured to be ready to enter the service state at any time.
Preferably, after the master device is down, that is, after the heartbeat is over time, the slave device that first finds this situation in the cluster network initiates a new election, and the other slave devices only need to update their current states.
Preferably, the high-availability physical interfaces can perform command interaction, state acquisition, inspection and real-time update, so that only one high-availability physical interface in the network cluster is ensured to be in an enabling state at the same time, and only one device is ensured to be in a service function really.
Preferably, the connection method further includes: when the device is started up, the function register of the high availability physical interface is not turned on as default, the device does not use the high availability physical interface to receive the signal of the line, and the connection with the line is invalid, so that the four status flag bits of the high availability physical interface are 1100 when the device is started up.
Preferably, when the election module in the network cluster confirms that a device is a master device, the election module notifies the device that the register value of the high-availability physical interface function module of the device will be set to 1, that is, the function of the high-availability physical interface is turned on, when the connection is successful and the device can receive and process signals by using the high-availability physical interface.
The scheme of the invention abandons the FOS design on the market at present, and can reconfirm the relationship between the master and the slave equipment in time when the equipment is found to be abnormal, thereby ensuring that the master and the slave relationships in the cluster network can be maintained correctly. Meanwhile, with the high-availability physical interface, the equipment connection cost in the network cluster can be reduced, and the fault risk is reduced.
Drawings
FIG. 1 is a FOS design connection diagram of a master-slave device in the prior art;
FIG. 2 is a diagram illustrating the connection of high availability physical interfaces in an embodiment of the present invention;
FIG. 3 is a functional diagram illustrating operation of an election module according to an embodiment of the present invention.
Detailed Description
The basic principle of the invention is as follows: at present, connection of a master device and a slave device is managed through an HA (high available), the HA is generally realized based on Fail-Over-Switch (FOS for short), all the master devices and the slave devices need heartbeat connection with the FOS, line switching is performed through the FOS, maintenance cost needs to be increased and fault risk needs to be increased every time an equipment node is added, and the cost of the scheme is high. The scheme of the invention is to realize a high-availability physical interface on the equipment, the FOS can be directly removed by the connection between the master equipment and the slave equipment, the master equipment and the slave equipment are directly connected by using the branch plug of a physical line, and whether the driving of the corresponding physical interfaces at the two ends of the master equipment and the slave equipment is enabled or not is used for ensuring that the line can be only used by the master equipment at the same time.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, and the following description is only some embodiments of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Other embodiments of the invention can be obtained according to these examples without inventive effort for a person skilled in the art.
In the specific embodiment of the present invention, in the cluster network, it is generally determined that a certain device is a master device and other devices are slave devices through an election mechanism by an election module, where a high-availability physical interface of the master device is enabled and a high-availability physical interface of the slave device is not enabled, and at this time, it is ensured that only the master device in the network cluster will be in service.
The election mechanism is that a weight is calculated by considering factors such as a CPU, a memory, a disk space, a current connection number and the like of each device, each device transmits the weight values to be compared until the device with the maximum value is compared, and the device becomes a main device.
A high availability physical interface of a device will typically store four status flag bits: the power supply condition of the power supply, whether the function of the main chip is normal or not, the role of the equipment and whether the high-availability physical interface of the equipment is enabled or not. The devices in the cluster will ensure that only the master device in the network will process the line's source signal by maintaining these states. The slave device will obtain data information from the master device to update its own database.
When the device is started up, the function register of the high availability physical interface is not turned on as default, the device does not use the high availability physical interface to receive the signal of the line, and the connection with the line is invalid, so that the four status flag bits of the high availability physical interface are 1100 when the device is started up. When the election module in the network cluster confirms that a device is a master device, the device is notified, and the device sets the register value of the high-availability physical interface function module to 1, that is, the function of the high-availability physical interface is turned on, when the connection is successful and the device can receive and process signals by using the high-availability physical interface.
And the master equipment can update the state of each functional module and the data state of the master equipment to the cluster network when the master equipment is in normal service. Other slave devices in the network monitor and determine whether the master device can be normally serviced according to the state of the master device. If the state of the master device is normal, the slave device updates the data state of the slave device according to the data information of the master device. If the master device is abnormal and is in a non-normal state, a new selection needs to be performed, and the slave device also needs to calculate the own state value in the latest period of time to prepare for the next election. At the same time, the master device is placed in a cooling tank, and when it is restored to normal level, it is placed in an available tank.
The abnormality of the equipment is various, and corresponding measures can be taken to remove through a high-availability physical interface. If the high-availability physical interface of the master device is abnormally closed, the slave device triggers an election mechanism to wake up through the availability physical interface, if the wake-up fails, the master device is killed and placed in a cooling pool, and the election module reselects to confirm the master device. If the function of the main chip of the main equipment is abnormal, the auxiliary equipment can directly kill the main equipment, and the election module can reselect to confirm the main equipment. If the master equipment is abnormally shut down, the slave equipment can trigger the election module to perform election again. The state of the main equipment is monitored, and the main equipment can be guaranteed to be in normal service.
Fig. 2 is a diagram illustrating a connection mode of a high availability physical interface according to an embodiment of the present invention, in which a line of a signal source is directly connected to the high availability physical interfaces of a plurality of devices by using a drop plug of a physical line. 1100, an election module in a cluster network selects a master device first, the master device modifies the role of the master device as the master device first and enables a register of a functional module of a high-availability physical interface of the master device to write 1, and the state of the master device is changed into: 1111, showing that all the modules of the device are normal, and other devices in the cluster network can keep the startup state and be ready to be used as slave devices at any time.
FIG. 3 is a functional diagram illustrating operation of an election module according to an embodiment of the present invention. As shown in the figure, the election module is connected to each device in the network cluster, and obtains data information of each device in real time, including cpu resources of the device, disk usage resources, enabling states of high-availability physical interfaces, and the like, and the election module performs weight calculation according to the information to select a device with the best performance in the network cluster to serve.
After the master role and the slave role are determined, the master device in the cluster network can be normally used, and the functional state and the data information of each current module are sent to the cluster at regular time through the high-availability network interface:
the status message commands for each function module are sent as follows:
<xml version="1.0" encoding="utf-8" >
<request>
<request_type>self_status</request_type>
<status_flag>1111</status_id>
</request>
the data information command of the sending master device is as follows:
<xml version="1.0" encoding="utf-8" >
<request>
<request_type>data_information</request_type>
<encode_method>base64</encode_method>
<data>..............</data>
</request>
the slave devices in the cluster network receive and analyze the data information command, and update own databases after analyzing the data information.
The slave equipment receives and analyzes the function state command of the master equipment and monitors whether the function of the master equipment is abnormal or not at any time.
If the state of the master device is 1111, the state of the master device is normal.
If 1110 is the state of the master device, it indicates that the high-availability physical interface of the master device is abnormally shut down, at this time, no device processing signal is present in the cluster network, at this time, the master device is abnormal, the slave device in the network triggers an election mechanism to wake up the high-availability physical interface of the master device, generally initiated by the slave device which first discovers master device heartbeat timeout in the cluster, and in the wake-up process, the election module simultaneously informs other slave devices that there is a device which is already waking up. If the awakening is successful, the master device continues to be in service, and if the awakening is failed, the slave device initiates a new election.
Kill command:
<xml version="1.0" encoding="utf-8" >
<request>
<request_type>abnormal_notify</request_type>
<attribute>kill</attribute>
</request>
if the state of the master device is analyzed to be 1101, the fact that the role of the master device is abnormal is indicated, the role needs to be confirmed again, and the slave device triggers an election mechanism to confirm the master role and the slave role in the cluster network again.
If the state of the master device is 1011, it indicates that the function module of the master device is abnormal, and at this time, the high-availability physical interface of the master device obviously cannot be continuously active any more although the high-availability physical interface of the master device is normally operated. At this point a kill command is sent to kill the master, which is placed in the cooling pool. The election mechanism will re-acknowledge the master and slave devices in the clustered network.
When the master device goes down abnormally, the slave devices in the network do not receive the status update of the master device within a fixed time. Then the getStatus command is actively sent to acquire the status of the master device:
the getStatus command is as follows:
<xml version="1.0" encoding="utf-8" >
<request>
<request_type>get_status</request_type>
<need_response>true</need_response>
</request>
the command needs the response of the main equipment, the main equipment cannot respond due to downtime, and at the moment, the election mechanism puts the main equipment into a cooling pool and reselects the corner to confirm the main equipment in the network.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A connection method of a physical interface of communication equipment is used for connecting a master device and a slave device in a cluster network, and is characterized by mainly comprising the following operations:
connecting the master device and the slave device by a drop of a physical line;
ensuring that a line signal source is only used by the master device at the same time through the drive enabling states at two ends of the high-availability physical interface;
and when the master equipment is abnormal and cannot be continuously used, the slave equipment in the cluster network reconfirms the new master equipment in the cluster network by acquiring the abnormal state of the master equipment and correspondingly processing.
2. The connection method according to claim 1, wherein the high availability physical interface stores four status flag bits: the method comprises the steps of providing a power supply state, judging whether a main chip is normal or not, judging the role state of a main device and a slave device, and judging the enabling state of a high-availability physical interface, wherein the main device periodically scans the self function state, maintains the state zone bit and periodically sends the self state to the cluster network.
3. The method of connecting according to claim 1, further comprising: after the master device and the slave device are connected through the physical line plug, connecting a power supply to supply power, and determining the slave device, wherein the high-availability physical interface is in an disabled state; and setting a position value of a role state flag for the master equipment through an election mechanism, enabling the high-availability physical interface and setting a corresponding value, and keeping other slave equipment in the cluster network in a startup state.
4. The connection method according to claim 3, wherein the high availability physical interface of the master device periodically sends its own status to the slave device, and the slave device receives and interprets different status commands: (1) all the slave equipment is normal and can continue to be in service, and the slave equipment still keeps a standby state; (2) re-triggering the election mechanism to determine master and slave roles in the network device; (3) the master-slave role in the cluster network is disordered, and an election mechanism is triggered to re-determine the master-slave relationship; (4) the chip of the master device is abnormal in function, but the high-availability physical interface is still in an enabled state at the moment, but obviously cannot be continuously used, at the moment, the slave device sends a command to close the high-availability physical interface of the master device, and triggers an election mechanism to re-determine the master role and the slave role in the network.
5. The connection method according to claim 4, wherein if the master device is abnormally down, and the slave device does not receive the status update of the master device for a certain period of time, a command is sent to the master device to obtain the status, and if no response is made, it is confirmed that the master device is down at this time, and the election mechanism is triggered to reselect a normal device as a new master device to continue to be in service.
6. The connecting method according to claim 5, characterized in that the connecting method further comprises: when the master device is in normal service, the slave device can acquire the state of the master device in real time, check the state of the master device in real time and update the state of the slave device, and the master device can also send a device state notification (notifyDataStatus) command to update the data information of the slave device in the network, so that the slave device is ensured to be ready to enter the service state at any time.
7. The connection method according to claim 6, wherein when the master device is down, that is, after the heartbeat times out, the slave device in the clustered network that found the condition first initiates a new election, and the remaining slave devices only need to update their current states.
8. The connecting method according to claim 7, characterized in that the connecting method further comprises: the high-availability physical interface can perform command interaction, obtain, check and update in real time, can ensure that only one high-availability physical interface in a network cluster is in an enabling state at the same time, and ensures that only one device is really in a service function.
9. The connecting method according to claim 8, characterized in that the connecting method further comprises: when the device is started up, the function register of the high-availability physical interface is not opened as the default is 0, and then the device does not utilize the high-availability physical interface to receive the signal of the line, and the connection with the line is invalid.
10. The connection method according to claim 9, wherein when the election module in the network cluster confirms that a certain device is a master device, the certain device is notified that the register value of its high availability physical interface function module will set to 1, i.e. the function of the high availability physical interface is turned on, and the connection is successful and the device can receive and process signals using the high availability physical interface.
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