CN111130862A - Main/standby system switching method and device based on IPPBX - Google Patents
Main/standby system switching method and device based on IPPBX Download PDFInfo
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- CN111130862A CN111130862A CN201911266461.2A CN201911266461A CN111130862A CN 111130862 A CN111130862 A CN 111130862A CN 201911266461 A CN201911266461 A CN 201911266461A CN 111130862 A CN111130862 A CN 111130862A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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Abstract
The invention provides a main and standby system switching method based on an IPPBX, which comprises a first server and a second server which are mutually hot backed up, and the method comprises the following steps: a first network card port of the first server and a third network card port of the second server are respectively connected with an external network, and a second network card port of the first server and a fourth network card port of the second server are mutually connected; when the first server is a main system, the second server is a standby system; the second server acquires the network configuration parameters and the service data from the first server and keeps the network configuration parameters and the service state consistent with those of the first server; when the second server is switched to the main system, the bidirectional voice stream can be quickly recovered by canceling the limitation of the data function of the third network card port and sending the message. The invention also provides a main and standby system switching device based on the IPPBX, which realizes the second-level switching of the main and standby servers, ensures that the existing service is not interrupted, does not influence the new service, improves the reliability of the system and gives consideration to the economy.
Description
Technical Field
The invention relates to the field of communication equipment, in particular to a method and a device for switching a main system and a standby system based on an IPPBX.
Background
A Private Branch Exchange (PBX), which is simply a group telephone, is widely used in an enterprise office, and greatly improves the business efficiency of the enterprise. However, the conventional PBX has many problems, and in recent years, with the popularity of the Internet (Internet) and the success of a network Protocol (IP), an IP PBX based on the IP Protocol has come up.
IP pbx is an IP-based corporate telephone system that fully integrates voice communications into the corporate data network, creating a unified voice and data network that can connect office sites and employees distributed around the globe. The most notable features of an ip pbx are: the system becomes an integrated communication system, and can provide a plurality of communication modes such as voice, fax, data, video and the like for users by only needing a single device through a telecommunication network and the Internet.
In order to ensure that the communication system can be quickly recovered after a fault, a dual-computer hot standby working mode is generally used. When the system provides service normally, one server is in the activated state of the service, the other server is in the standby state of the service, and when the running server fails to provide service continuously (for example, an operating system goes down, the server is powered down accidentally, a network failure occurs and the like), the other backup server can take over running quickly, so that the normal running of the system is ensured.
However, due to the complexity of the communication system, the switching between the active and standby systems usually causes a short interruption of the communication service, which affects the user experience. The prior art mainly has the problems of long time for switching between the main and the standby, dependence on specific hardware and poor universality.
Disclosure of Invention
One of the technical problems to be solved by the present invention is to provide a method for switching between a main system and a standby system based on an ip pbx, which does not need to rely on specific hardware to realize fast switching.
One of the technical problems solved by the invention is realized as follows:
a main and standby system switching method based on IPPBX comprises a first server and a second server which are mutually hot-backed, and the method comprises the following steps:
a first network card port of the first server and a third network card port of the second server are respectively connected with an external network, and a second network card port of the first server and a fourth network card port of the second server are mutually connected;
when the first server is a main system, the second server is a standby system, the main system sends a first periodic heartbeat message to the standby system, and the standby system sends a second periodic heartbeat message to the main system;
the second server acquires network configuration parameters from the first server, sets the network configuration parameters of the second server to be consistent with those of the first server, and then limits a data function of a third network card port by configuring a special network driver;
when the first server provides service, the second server acquires service data from the first server, and adjusts the service state by using the service data so as to keep consistent with the service state of the first server;
when the second server receives a switching instruction sent by the first server or does not receive the first periodic heartbeat message sent by the first server within a set time, the second server switches the state to the main system, then cancels the limitation of the data function of a third network card port by configuring a special network driver, and sends at least one free ARP message to an external network to recover the bidirectional voice stream.
Further, when the first server sends a switching instruction or reconnects the network after a failure, the first server is switched to a standby system, and a dedicated network driver is configured to limit the data function of the first network card port, and then the first server acquires service data from the second server, and adjusts the service state by using the service data, so that the service state is consistent with the service state of the second server.
Further, the function of limiting the data of the third network card port is to discard a message sent or received by the third network card port.
Further, the function of limiting the data of the first network card port is to discard a message sent or received by the first network card port.
Further, the service data includes a session state, a voice port, an IP address of the remote device, and an MAC address of the remote device, and the gratuitous ARP packet includes the IP address of the second server and the MAC address of the second server.
The second technical problem solved by the invention is realized as follows:
a main-standby system switching device based on an IPPBX comprises a first server and a second server which are mutually hot-backed, wherein the device comprises a communication connection module, a heartbeat monitoring module, a network synchronization module, a service synchronization module and a first main-standby switching module;
the communication connection module is used for connecting a first network card port of the first server and a third network card port of the second server with an external network respectively, and a second network card port of the first server and a fourth network card port of the second server are connected with each other;
the heartbeat monitoring module is configured to, when the first server is a primary system, use the second server as a standby system, send a first periodic heartbeat packet to the standby system by the primary system, and send a second periodic heartbeat packet to the primary system by the standby system;
the network synchronization module is used for the second server to acquire network configuration parameters from the first server, set the network configuration parameters of the second server to be consistent with the network configuration parameters of the first server, and then limit the data function of a third network card port by the second server through configuring a special network driver;
the service synchronization module is configured to, when the first server provides a service, acquire service data from the first server by the second server, and adjust a service state by using the service data so that the service state of the second server is consistent with the service state of the first server;
the first active/standby switching module is configured to switch a state to the active system when the second server receives a switching instruction sent by the first server or does not receive the first periodic heartbeat packet sent by the first server within a set time, and then cancel a limitation of a third network card port data function by configuring a dedicated network driver, and send at least one free ARP packet to an external network to recover a bidirectional voice stream.
Further, the device further comprises a second main/standby switching module;
the second main/standby switching module is used for switching the first server into a standby system when the first server sends a switching instruction or reconnects a network after a fault, limiting the data function of a first network card port by configuring a special network driver, then acquiring service data from the second server by the first server, and adjusting the service state by using the service data so as to keep the same as the service state of the second server.
Further, the function of limiting the data of the third network card port is to discard a message sent or received by the third network card port.
Further, the function of limiting the data of the first network card port is to discard a message sent or received by the first network card port.
Further, the service data includes a session state, a voice port, an IP address of the remote device, and an MAC address of the remote device, and the gratuitous ARP packet includes the IP address of the second server and the MAC address of the second server.
The invention has the following advantages:
by defining the step of switching the main and standby systems, and by using specific network configuration and matching with the control of a driving layer, the problems of long time for switching the main and standby systems and dependence on specific hardware are solved, and the second-level switching of the main and standby servers can be realized without adding additional hardware and complicated network operation, so that the existing service is not interrupted, the new service is not influenced, the reliability of the system can be improved, and the economy is also considered.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating an implementation of a method for switching between an active system and a standby system based on an ip pbx according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a main/standby system switching device based on an ip pbx according to an embodiment of the present disclosure;
fig. 3 is a network connection diagram of an active/standby system based on an ip pbx in an embodiment of the present description;
fig. 4 is a flowchart illustrating an embodiment of the present disclosure for switching between an active system and a standby system based on an ip pbx.
Detailed Description
Embodiments of the present description provide a method and an apparatus for switching between a main system and a standby system based on an ip pbx, so as to solve the problems of long time for switching between the main system and the standby system, dependence on specific hardware, and poor universality in the prior art.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1 to 4, the present embodiment provides a method for switching between a primary system and a secondary system based on an ip pbx, including a first server and a second server that are hot-backed up with each other, the method includes:
a first network card port of the first server (for example, an eth1 port of the server a or an eth1 port of the server B) and a third network card port of the second server (for example, an eth1 port of the server B or an eth1 port of the server a) are respectively connected to an external network, and a second network card port of the first server (for example, an eth2 port of the server a or an eth2 port of the server B) and a fourth network card port of the second server (for example, an eth2 port of the server B or an eth2 port of the server a) are connected to each other; the first server and the second server are connected with each other through the network card port, and information synchronization is facilitated.
When the first server (for example, server a or server B) is an active system, the second server (for example, server B or server a) is a standby system, the active system sends a first periodic heartbeat packet (for example, a heartbeat packet with an interval of 20 ms) to the standby system, and the standby system sends a second periodic heartbeat packet (for example, a heartbeat packet with an interval of 200 ms) to the active system; the main system sends heartbeat messages to the standby system in a first smaller period, so that the standby system can sense and process the heartbeat messages in time when the main system fails, and the standby system sends the heartbeat messages to the main system in a second larger period, so that the processing load of the main system is reduced, and the smooth service processing is ensured.
The second server obtains the network configuration parameters from the first server, sets the network configuration parameters of the second server to be consistent with the first server (such as IP/mask code/gateway/MAC address and the like), then limits the data function of the third network card port by configuring a special network driver, and discards the message sent or received by the third network card port (such as realized by a netfilter mechanism under a Linux system); at this time, the first network card port of the first server is in a normal working state, and the third network card port of the second server is in a restricted state, so that the network does not generate conflict.
When the first server provides service, the second server obtains service data from the first server, the service data includes a session state, a voice port, an IP address of a remote device and an MAC address of the remote device (the remote device includes a terminal device and/or a platform server), and adjusts the service state using the service data so as to keep consistent with the service state of the first server.
When the second server receives a switching instruction sent by the first server (for example, when the primary system fails, although the server still works, but cannot continue to provide voice service), or does not receive the first periodic heartbeat packet sent by the first server within a set time (for example, 100ms), the primary system actively sends the switching instruction to the standby system, and then the second server switches the state to the primary system, and then cancels the limitation of the data function of the third network card port by configuring a dedicated network driver, and sends at least one (for example, 10) gratuitous ARP packet (for example, including the IP address and the MAC address of the second server) to the external network so as to recover the bidirectional voice stream, and when the ARP packet reaches the switch/router, the bidirectional voice stream is immediately recovered. For the external network, the IP and MAC addresses of the servers before and after the active/standby system is switched are not changed (because the second server has already obtained the network configuration parameters from the first server and set the network configuration parameters of the second server to be consistent with the first server when serving as the standby system), and the terminal state does not need to be changed. Because the second server is in the UP state all the time in the working process as the standby system, the working mode and the speed of the network port do not need to be negotiated with the switch after the second server is switched into the main system, the software switching time only needs to be consumed during the main-standby switching, the ongoing voice call interruption time during the switching is within 1s, and the newly initiated call can be immediately carried out, thereby achieving the effect of uninterrupted service and having good user experience.
When the first server sends a switching instruction or reconnects the network after a fault, the first server is switched to a standby system, and the data function of the first network card port is limited by configuring a special network driver, and a message sent or received by the first network card port is discarded (for example, under a Linux system, the message is realized through a netfilter mechanism); and then the first server acquires service data from the second server, and adjusts the service state by using the service data so as to keep the service state consistent with the service state of the second server.
Example two
Based on the same idea, an embodiment of the present specification further provides a device corresponding to the method, please refer to fig. 2 to 4, and this embodiment provides a device for switching between a main system and a standby system based on an ip pbx, including a first server and a second server that are hot-backed up with each other, where the device includes a communication connection module, a heartbeat monitoring module, a network synchronization module, a service synchronization module, a first main/standby switching module, and a second main/standby switching module;
the communication connection module is used for connecting a first network card port of the first server and a third network card port of the second server with an external network respectively, and a second network card port of the first server and a fourth network card port of the second server are connected with each other;
the heartbeat monitoring module is configured to, when the first server is a primary system, use the second server as a standby system, send a first periodic heartbeat packet to the standby system by the primary system, and send a second periodic heartbeat packet to the primary system by the standby system;
the network synchronization module is configured to acquire, by the second server, a network configuration parameter from the first server, set the network configuration parameter of the second server to be consistent with that of the first server, then limit a data function of a third network card port by configuring a dedicated network driver, and discard a packet sent or received by the third network card port (for example, in a Linux system, implemented by a netfilter mechanism);
the service synchronization module is configured to, when the first server provides a service, obtain, by the second server, service data from the first server, where the service data includes a session state, a voice port, an IP address of a remote device, and an MAC address of the remote device (the remote device includes a terminal device and/or a platform server), and adjust a service state by using the service data, so that the service state is consistent with the service state of the first server;
the first active/standby switching module is configured to switch a state to an active system when the second server receives a switching instruction sent by the first server or does not receive the first periodic heartbeat packet sent by the first server within a set time, cancel a limitation of a third network card port data function by configuring a dedicated network driver, and send at least one free ARP packet (including an IP address and an MAC address, for example) to an external network to recover a bidirectional voice stream.
The second active/standby switching module is configured to, when the first server sends a switching instruction or reconnects a network after a failure, switch the first server to a standby system, limit a data function of a first network card port by configuring a dedicated network driver, discard a message sent or received by the first network card port (for example, in a Linux system, the message is implemented by a netfilter mechanism), and then acquire service data from the second server by the first server, and adjust a service state by using the service data, so that the service state of the first server is consistent with the service state of the second server.
EXAMPLE III
Referring to fig. 3 to 4, in an embodiment of the present disclosure, an IP pbx-based active/standby system is composed of a server a and a server B, and after the active/standby negotiation between the two servers is completed, the standby system (for example, the server B or the server a) configures the IP/mask/gateway/MAC address and the state of the network card eth1 port to be the same as that of the active system (for example, the server a or the server B).
The standby system discards the message sent or received by the eth1 port by configuring a dedicated network driver. At this time, the first network card port of the first server is in a normal working state, and the third network card port of the second server is in a restricted state, so that the network does not generate conflict. And the standby system downloads the network configuration and the service data configuration to the main system through ftp by using the eth2 port. The main system sends heartbeat messages with an interval of 20ms to the port of the standby system, and the standby system sends heartbeat messages with an interval of 200ms to the main system.
When the main system initiates a voice call, service data (including a session state, a voice port, a terminal IP address and a terminal MAC address) is sent to the standby system through an eth2 port using event, and the standby system adjusts a program-related state to keep the service state consistent with the main system.
When the main system is abnormal or power-off, the standby system does not detect the heartbeat message of the main system within 100ms, and the standby system immediately switches the state to the main system. After the state switching is finished, the voice module immediately continues the previous voice service; the network module cancels the limitation of the eth1 port by configuring a special network drive, and simultaneously sends 10 gratuitous ARP messages constructed by the IP and MAC addresses of the eth1 port to the external network at 20ms intervals through the eth1 port, and when the ARP messages reach the switch/router, the bidirectional voice flow is immediately recovered. For the external network, the IP and MAC addresses of the server are not changed before and after the active/standby switching, and the terminal state does not need to be changed.
When the main system fails, although the server still works, but the main system can not continuously provide voice service, the main system actively sends a switching instruction to the standby system and switches the state to the standby system, and the network module discards all messages sent or received by the eth1 port by configuring a special network driver; after the original standby system receives the switching instruction, the state is immediately switched to the main system, and the subsequent operation is the same as the power-off condition.
Because the network port is always in the UP state in the working process of the standby system, the standby system does not need to negotiate the working mode and the speed of the network port with the switch after being switched into the main system, and only the software switching time is consumed during the main-standby switching. When the system of the embodiment of the present specification is used, the active/standby switching only needs to consume 200ms to 800ms, the interruption time of the ongoing voice call during switching is within 1s, and the newly initiated call can be immediately performed, so that the effect of uninterrupted service is achieved, and good user experience is achieved. Meanwhile, the system does not need to use special hardware, only needs two same servers, reduces the cost and simultaneously reduces the complexity of the system.
The invention solves the problems of long time for switching the main system and the standby system and dependence on specific hardware by defining the switching steps of the main system and the standby system, does not need to add additional hardware and complex network operation, can realize the second-level switching of the main server and the standby server, ensures that the existing service is not interrupted, does not influence new service, can improve the reliability of the system and also considers the economy.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (10)
1. A method for switching between main and standby systems based on IPPBX is characterized in that: the method comprises a first server and a second server which are mutually hot-backed up, and comprises the following steps:
a first network card port of the first server and a third network card port of the second server are respectively connected with an external network, and a second network card port of the first server and a fourth network card port of the second server are mutually connected;
when the first server is a main system, the second server is a standby system, the main system sends a first periodic heartbeat message to the standby system, and the standby system sends a second periodic heartbeat message to the main system;
the second server acquires network configuration parameters from the first server, sets the network configuration parameters of the second server to be consistent with those of the first server, and then limits a data function of a third network card port by configuring a special network driver;
when the first server provides service, the second server acquires service data from the first server, and adjusts the service state by using the service data so as to keep consistent with the service state of the first server;
when the second server receives a switching instruction sent by the first server or does not receive the first periodic heartbeat message sent by the first server within a set time, the second server switches the state to the main system, then cancels the limitation of the data function of a third network card port by configuring a special network driver, and sends at least one free ARP message to an external network to recover the bidirectional voice stream.
2. The method of claim 1, further comprising: when the first server sends a switching instruction or reconnects the network after a fault, the first server is switched to a standby system, and limits the data function of a first network card port by configuring a special network drive, then the first server acquires service data from the second server, and adjusts the service state by using the service data so as to keep consistent with the service state of the second server.
3. The method according to claim 1, wherein the method comprises: the function of limiting the data of the third network card port is specifically to discard a message sent or received by the third network card port.
4. The method according to claim 2, wherein the method comprises the following steps: the function of limiting the data of the first network card port is specifically to discard a message sent or received by the first network card port.
5. The method according to any of claims 1 to 4, wherein said method comprises: the service data comprises a session state, a voice port, an IP address of a remote device and an MAC address of the remote device, and the gratuitous ARP message comprises the IP address of the second server and the MAC address of the second server.
6. A master spare system switching device based on IPPBX, its characterized in that: the device comprises a first server and a second server which are mutually in hot backup, and the device comprises a communication connection module, a heartbeat monitoring module, a network synchronization module, a service synchronization module and a first main/standby switching module;
the communication connection module is used for connecting a first network card port of the first server and a third network card port of the second server with an external network respectively, and a second network card port of the first server and a fourth network card port of the second server are connected with each other;
the heartbeat monitoring module is configured to, when the first server is a primary system, use the second server as a standby system, send a first periodic heartbeat packet to the standby system by the primary system, and send a second periodic heartbeat packet to the primary system by the standby system;
the network synchronization module is used for the second server to acquire network configuration parameters from the first server, set the network configuration parameters of the second server to be consistent with the network configuration parameters of the first server, and then limit the data function of a third network card port by the second server through configuring a special network driver;
the service synchronization module is configured to, when the first server provides a service, acquire service data from the first server by the second server, and adjust a service state by using the service data so that the service state of the second server is consistent with the service state of the first server;
the first active/standby switching module is configured to switch a state to the active system when the second server receives a switching instruction sent by the first server or does not receive the first periodic heartbeat packet sent by the first server within a set time, and then cancel a limitation of a third network card port data function by configuring a dedicated network driver, and send at least one free ARP packet to an external network to recover a bidirectional voice stream.
7. The ip pbx-based main/standby system switching apparatus according to claim 6, wherein: the device also comprises a second main/standby switching module;
the second main/standby switching module is used for switching the first server into a standby system when the first server sends a switching instruction or reconnects a network after a fault, limiting the data function of a first network card port by configuring a special network driver, then acquiring service data from the second server by the first server, and adjusting the service state by using the service data so as to keep the same as the service state of the second server.
8. The ip pbx-based main/standby system switching apparatus according to claim 6, wherein: the function of limiting the data of the third network card port is specifically to discard a message sent or received by the third network card port.
9. The ip pbx-based main/standby system switching apparatus according to claim 7, wherein: the function of limiting the data of the first network card port is specifically to discard a message sent or received by the first network card port.
10. The ip pbx-based main/standby system switching apparatus according to any one of claims 6 to 9, wherein: the service data comprises a session state, a voice port, an IP address of a remote device and an MAC address of the remote device, and the gratuitous ARP message comprises the IP address of the second server and the MAC address of the second server.
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| CN116170312A (en) * | 2022-12-28 | 2023-05-26 | 天翼云科技有限公司 | System configuration method, intelligent network card, electronic equipment and storage medium |
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| CN106656589A (en) * | 2016-12-13 | 2017-05-10 | 武汉船舶通信研究所 | Server dual hot backup system |
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| CN114124272A (en) * | 2021-11-16 | 2022-03-01 | 广州市保伦电子有限公司 | Hot backup switching method and system based on network card detection |
| CN114124272B (en) * | 2021-11-16 | 2022-09-06 | 广州市保伦电子有限公司 | Hot backup switching method and system based on network card detection |
| WO2023087858A1 (en) * | 2021-11-16 | 2023-05-25 | 广州市保伦电子有限公司 | Hot backup switching method and system based on network card detection |
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