CN112217717A - Network switching method and system based on dual-computer hot standby - Google Patents
Network switching method and system based on dual-computer hot standby Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 claims description 6
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- 230000000593 degrading effect Effects 0.000 claims description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/12—Network monitoring probes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
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Abstract
The invention discloses a network switching method and system based on dual-computer hot standby, and relates to the technical field of the Internet, when the networking state of a main route is broken, the network switching method and system can be used for quickly switching to a standby route to access an external network, so that the effect of quick redundancy is achieved, and the Internet surfing experience of a user is improved. The method comprises the following steps: respectively configuring the same DHCP address pools in the main route and the standby route, and establishing a heartbeat link between the main route and the standby route; when the network state access of the main route is available, the terminal equipment acquires an IP address through a DHCP address pool of the main route to access the external network; when the networking state of the main route is broken, the terminal equipment acquires the IP address through the DHCP address pool of the standby route to access the external network. The system is applied with the method provided by the scheme.
Description
Technical Field
The invention relates to the technical field of internet, in particular to a network switching method and system based on dual-computer hot standby.
Background
With the development of internet technology, more and more terminal devices access the internet through an intranet, so that the hot standby work of an exit gateway is more and more important.
The hot standby scheme in the prior art is usually realized by adopting a stacking technology, namely, the hot standby scheme is accessed through a plurality of external network links, and when one external network link cannot be networked, the hot standby scheme is manually switched to the other external network link to realize network switching. Therefore, the response of manually switching the external network link is slow, and the effect of quick redundancy cannot be achieved.
Disclosure of Invention
The invention aims to provide a network switching method and system based on dual-computer hot standby, which can be used for quickly switching to a standby route to access an external network when a main route networking state is broken, so that the effect of quick redundancy is achieved, and the internet surfing experience of a user is improved.
In order to achieve the above object, a first aspect of the present invention provides a network switching method based on dual-device hot standby, including:
respectively configuring the same DHCP address pools in the main route and the standby route, and establishing a heartbeat link between the main route and the standby route;
when the network state access of the main route is available, the terminal equipment acquires an IP address through a DHCP address pool of the main route to access the external network;
when the networking state of the main route is broken, the terminal equipment acquires the IP address through the DHCP address pool of the standby route to access the external network.
Preferably, before the step of configuring the same DHCP address pool in the primary route and the backup route respectively, the method further includes:
the plurality of terminal devices are respectively connected with the main route and the standby route through the two-layer switch, the main route is connected with the external network through the first link, and the standby route is connected with the external network through the second link.
Preferably, the main route and the standby route are respectively provided with a detection website for detecting the network status of the main route or the standby route.
Preferably, the method for establishing the heartbeat link between the primary route and the standby route includes:
and acquiring the heartbeat IP address of the main route and the heartbeat IP address of the standby route in the heartbeat link, acquiring the heartbeat IP address of the standby route and the heartbeat port of the main route in the heartbeat link, and establishing the heartbeat link between the main route and the standby route.
Preferably, the transmission ports and the virtual gateway IP addresses used by the underlying transmission links of the main route and the standby route are set respectively.
Preferably, the method for judging the network states of the main route and the standby route comprises the following steps:
when the network state acquired by the main route based on the detection website is abnormal, stopping sending a link heartbeat signal to the standby route;
when the state of the host of the main route is abnormal, the state heartbeat signal is stopped being sent to the standby route;
and when the standby route does not receive the link heartbeat signal and/or the state heartbeat signal in a preset time period, judging that the networking state of the main route is broken, otherwise, judging that the networking state of the main route is connected.
Preferably, when the networking state of the main route is on, the terminal device accesses the external network by acquiring the IP address through the DHCP address pool of the main route, and when the networking state of the main route is off, the method for the terminal device to access the external network by acquiring the IP address through the DHCP address pool of the standby route includes:
the terminal equipment sends a request message through a two-layer switch;
when the networking state of the main route is accessed, the main route extracts an IP address from a DHCP address and feeds back the IP address together with the virtual gateway IP address of the main route to the terminal equipment, so that the terminal equipment accesses the external network through a first link;
and when the networking state of the main route is broken, switching to the standby route, wherein the standby route accesses the external network through the second link based on the IP address previously extracted from the DHCP address of the main route by the terminal equipment and the IP address of the virtual gateway.
Preferably, when the networking state of the main route is broken, the step that the terminal device obtains the IP address through the DHCP address pool of the standby route to access the external network further includes:
and upgrading the standby route in the on-line state to the main route, and degrading the main route in the off-line state to the standby route.
Compared with the prior art, the network switching method based on dual-computer hot standby provided by the invention has the following beneficial effects:
in the network switching method based on the dual-computer hot standby provided by the invention, the same DHCP address pools are respectively configured in the main route and the standby route, and the heartbeat link between the main route and the standby route is simultaneously established, so that the main route can be used for receiving the external network access path of the terminal equipment preferentially when the networking state of the main route is in a path, and the standby route can be used for receiving the external network access path of the terminal equipment automatically when the networking state of the main route is in a broken circuit.
Therefore, the method and the device can realize the hot standby of the two machines of the enterprise network, and can quickly switch to the standby route to access the external network when the networking state of the main route is broken, thereby achieving the effect of quick redundancy and improving the internet experience of users.
A second aspect of the present invention provides a network switching system based on dual-server hot standby, which is applied to the network switching method based on dual-server hot standby in the above technical solution, and the system includes:
the routing unit is used for configuring the same DHCP address pools in the main route and the standby route respectively and establishing a heartbeat link between the main route and the standby route;
and the switching unit is used for acquiring the IP address to access the external network through the DHCP address pool of the main route by the terminal equipment when the networking state of the main route is on or acquiring the IP address to access the external network through the DHCP address pool of the standby route by the terminal equipment when the networking state of the main route is off.
Compared with the prior art, the beneficial effect of the network switching system based on dual-computer hot standby provided by the invention is the same as that of the network switching method based on dual-computer hot standby provided by the technical scheme, and details are not repeated herein.
A third aspect of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the network handover method based on dual-device hot standby are executed.
Compared with the prior art, the beneficial effect of the computer-readable storage medium provided by the present invention is the same as that of the network switching method based on dual-computer hot standby provided by the above technical scheme, and details are not repeated herein.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart illustrating a network switching method based on dual-server hot standby in an embodiment of the present invention;
fig. 2 is a topology diagram of a dual-device hot-standby network switching system according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a process of switching from a primary route to a standby route according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the 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, the present embodiment provides a network switching method based on dual-device hot standby, including:
respectively configuring the same DHCP address pools in the main route and the standby route, and establishing a heartbeat link between the main route and the standby route; when the network state access of the main route is available, the terminal equipment acquires an IP address through a DHCP address pool of the main route to access the external network; when the networking state of the main route is broken, the terminal equipment acquires the IP address through the DHCP address pool of the standby route to access the external network.
In the network switching method based on dual-computer hot standby provided by this embodiment, the same DHCP address pools are respectively configured in the main route and the standby route, and the heartbeat link between the main route and the standby route is established at the same time, so that the main route can preferentially accept the external network access path of the terminal device when the networking state of the main route is on, and the standby route can automatically switch to the standby route and accept the external network access path of the terminal device when the networking state of the main route is off.
Therefore, the embodiment can realize the hot standby of the enterprise network, and when the networking state of the main route is broken, the main route can be quickly switched to the standby route to access the external network, so that the effect of quick redundancy is achieved, and the internet surfing experience of a user is improved.
In the above embodiment, before configuring the same DHCP address pool in the primary route and the backup route respectively in the step, the method further includes:
the plurality of terminal devices are respectively connected with the main route and the standby route through the two-layer switch, the main route is connected with the external network through the first link, and the standby route is connected with the external network through the second link.
Referring to fig. 2, in a specific implementation, a dual-standby network switching system is first constructed, where the dual-standby network switching system includes a dual-layer switch, a main route, a standby route, and an external network broadband, a terminal device is networked with the dual-layer switch, the dual-layer switch is further networked with the main route and the standby route, the main route and the standby route are further connected to the external network broadband, and a heartbeat link is established between the main route and the standby route, so as to monitor a networking state of an opposite route through the heartbeat link, so as to quickly complete network switching when the networking state of the opposite route is disconnected, thereby ensuring a user's internet experience.
Specifically, the main route and the standby route have an external network detection function and a dual-computer hot standby function, and the network state of the main route or the standby route is detected in real time by setting the hot standby mode of the main route and the standby route to be single-line hot standby and respectively setting a detection website to open a network detection function.
In the above embodiment, the method for establishing a heartbeat link between the primary route and the standby route includes:
and acquiring the heartbeat IP address of the main route and the heartbeat IP address of the standby route in the heartbeat link, acquiring the heartbeat IP address of the standby route and the heartbeat port of the main route in the heartbeat link, and establishing the heartbeat link between the main route and the standby route.
During specific implementation, the heartbeat link setting is completed in the main route based on the heartbeat port of the main route and the heartbeat IP address of the standby route, the heartbeat link setting is completed in the standby route based on the heartbeat port of the standby route and the heartbeat IP address of the main route, and after the heartbeat link setting of the main route and the heartbeat IP address of the standby route is completed, the heartbeat monitoring between the main route and the standby route can be realized.
Preferably, the above embodiment sets the transmission ports and the virtual gateway IP addresses used by the lower transmission links of the main route and the standby route respectively.
Further, the method for determining the network states of the primary route and the standby route in the above embodiment includes:
when the network state acquired by the main route based on the detection website is abnormal, stopping sending a link heartbeat signal to the standby route; when the state of the host of the main route is abnormal, the state heartbeat signal is stopped being sent to the standby route; and when the standby route does not receive the link heartbeat signal and/or the state heartbeat signal in a preset time period, judging that the networking state of the main route is broken, otherwise, judging that the networking state of the main route is connected.
Further, when the networking state of the main route is on, the terminal device obtains the IP address through the DHCP address pool of the main route to access the external network, and when the networking state of the main route is off, the terminal device obtains the IP address through the DHCP address pool of the standby route to access the external network, the method includes:
the terminal equipment sends a request message through a two-layer switch; when the networking state of the main route is accessed, the main route extracts an IP address from a DHCP address and feeds back the IP address together with the virtual gateway IP address of the main route to the terminal equipment, so that the terminal equipment accesses the external network through a first link; and when the networking state of the main route is broken, switching to the standby route, wherein the standby route accesses the external network through the second link based on the IP address previously extracted from the DHCP address of the main route by the terminal equipment and the IP address of the virtual gateway.
Further, when the networking state of the main route is broken, the method for accessing the external network by the terminal device obtaining the IP address through the DHCP address pool of the standby route further comprises:
and upgrading the standby route in the on-line state to the main route, and degrading the main route in the off-line state to the standby route.
For convenience of understanding, the switching process of the main route and the standby route is exemplarily explained based on the dual-server hot-standby network switching system constructed in the embodiment:
as shown in fig. 3, the extranet detection function of the main route and the standby route is firstly turned on, the main route detects the networking state of the main route according to the detection website, if the networking state of the main route is a path, the main route sends a link heartbeat signal and a state heartbeat signal to the standby route at regular time, so as to inform the standby route that the current networking state of the main route is the path, and at the moment, the main route forwards the traffic flow of the terminal device, thereby realizing extranet access of the terminal device. If the networking state of the main route is open circuit, the main route stops sending a link heartbeat signal and a state heartbeat signal to the standby route, when the standby route does not receive the link heartbeat signal and the state heartbeat signal sent by the main route in a preset time period, the main route is known to be open circuit, the previous main route is degraded into the standby route, the previous standby route is upgraded into the main route, then the current main route bears the extranet access service of the terminal equipment, and the link switching between the main route and the standby route is realized. And until the networking state of the current main route is disconnected again, and/or the host state of the current main route is abnormal again, degrading the current main route into a standby route, upgrading the previous standby route into the main route, and so on.
In summary, the present embodiment has the following beneficial effects:
1. the method can realize the fast switching to the standby route to execute data forwarding when the main router fails;
2. the method can realize the quick switching to the DHCP address pool of the standby route when the main router fails;
3. when the original main route is recovered to be normal again, the status of the current main route cannot be immediately preempted, and the state of the main route cannot be changed frequently, so that the operation of the enterprise network is more stable.
Example two
The embodiment provides a network switching system based on dual-computer hot standby, including:
the routing unit is used for configuring the same DHCP address pools in the main route and the standby route respectively and establishing a heartbeat link between the main route and the standby route;
and the switching unit is used for acquiring the IP address to access the external network through the DHCP address pool of the main route by the terminal equipment when the networking state of the main route is on or acquiring the IP address to access the external network through the DHCP address pool of the standby route by the terminal equipment when the networking state of the main route is off.
Compared with the prior art, the beneficial effects of the network switching system based on dual-computer hot standby provided by the embodiment of the present invention are the same as the beneficial effects of the network switching method based on dual-computer hot standby provided by the first embodiment, and are not described herein again.
EXAMPLE III
The present embodiment provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and the computer program is executed by a processor to perform the steps of the network handover method based on dual-computer hot standby.
Compared with the prior art, the beneficial effect of the computer-readable storage medium provided in this embodiment is the same as that of the network switching method based on dual-computer hot standby provided in the above technical solution, and details are not repeated here.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the invention may be implemented by hardware instructions related to a program, the program may be stored in a computer-readable storage medium, and when executed, the program includes the steps of the method of the embodiment, and the storage medium may be: ROM/RAM, magnetic disks, optical disks, memory cards, and the like.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The network switching method based on dual-computer hot standby is characterized by comprising the following steps:
respectively configuring the same DHCP address pools in the main route and the standby route, and establishing a heartbeat link between the main route and the standby route;
when the network state access of the main route is available, the terminal equipment acquires an IP address through a DHCP address pool of the main route to access the external network;
when the networking state of the main route is broken, the terminal equipment acquires the IP address through the DHCP address pool of the standby route to access the external network.
2. The method according to claim 1, further comprising, before the step of configuring the same DHCP address pool in the primary route and the backup route, respectively:
the plurality of terminal devices are respectively connected with the main route and the standby route through the two-layer switch, the main route is connected with the external network through the first link, and the standby route is connected with the external network through the second link.
3. The method according to claim 2, wherein the main route and the backup route are respectively provided with a probing website for probing the network status of the main route or the backup route.
4. The method of claim 3, wherein the method of establishing the heartbeat link between the primary route and the backup route comprises:
and acquiring the heartbeat IP address of the main route and the heartbeat IP address of the standby route in the heartbeat link, acquiring the heartbeat IP address of the standby route and the heartbeat port of the main route in the heartbeat link, and establishing the heartbeat link between the main route and the standby route.
5. The method of claim 4, wherein the transmission ports and virtual gateway IP addresses used by the underlying transmission links of the main route and the standby route are set separately.
6. The method of claim 5, wherein the method of determining the network states of the primary route and the backup route comprises:
when the main route acquires the abnormal network state based on the detection website, stopping sending a link heartbeat signal to the standby route;
when the state of the host is abnormal, the main route stops sending a state heartbeat signal to the standby route;
and when the standby route does not receive the link heartbeat signal and/or the state heartbeat signal in a preset time period, judging that the networking state of the main route is broken, otherwise, judging that the networking state of the main route is connected.
7. The method of claim 6, wherein the method for the terminal device to access the external network by acquiring the IP address through the DHCP address pool of the main route when the networking state of the main route is on, and the method for the terminal device to access the external network by acquiring the IP address through the DHCP address pool of the standby route when the networking state of the main route is off comprises:
the terminal equipment sends a request message through a two-layer switch;
when the networking state of the main route is accessed, the main route extracts an IP address from a DHCP address and feeds back the IP address together with the virtual gateway IP address of the main route to the terminal equipment, so that the terminal equipment accesses the external network through a first link;
and when the networking state of the main route is broken, switching to the standby route, wherein the standby route accesses the external network through the second link based on the IP address previously extracted from the DHCP address of the main route by the terminal equipment and the IP address of the virtual gateway.
8. The method according to any one of claims 1 to 7, wherein after the step of the terminal device obtaining the IP address through the DHCP address pool of the standby route to access the external network when the networking state of the main route is broken, the method further comprises:
and upgrading the standby route in the on-line state to the main route, and degrading the main route in the off-line state to the standby route.
9. A network switching system based on dual-computer hot standby is characterized by comprising:
the routing unit is used for configuring the same DHCP address pools in the main route and the standby route respectively and establishing a heartbeat link between the main route and the standby route;
and the switching unit is used for acquiring the IP address to access the external network through the DHCP address pool of the main route by the terminal equipment when the networking state of the main route is on or acquiring the IP address to access the external network through the DHCP address pool of the standby route by the terminal equipment when the networking state of the main route is off.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of the claims 1 to 8.
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| CN108574626A (en) * | 2017-03-13 | 2018-09-25 | 中兴通讯股份有限公司 | A kind of distribution NAT two-node cluster hot backup flow switching systems and method |
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- 2020-08-31 CN CN202010894277.9A patent/CN112217717A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090172151A1 (en) * | 2007-12-29 | 2009-07-02 | Cisco Technology, Inc. | Dynamic network configuration |
| CN102025798A (en) * | 2010-12-15 | 2011-04-20 | 华为技术有限公司 | Address allocation processing method, device and system |
| CN103546315A (en) * | 2013-10-11 | 2014-01-29 | 北京星网锐捷网络技术有限公司 | System, method and equipment for backing up DHCP (dynamic host configuration protocol) server |
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