CN112929265A - Method for any node to place VRRP any node in main in real time - Google Patents
Method for any node to place VRRP any node in main in real time Download PDFInfo
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- CN112929265A CN112929265A CN202110169827.5A CN202110169827A CN112929265A CN 112929265 A CN112929265 A CN 112929265A CN 202110169827 A CN202110169827 A CN 202110169827A CN 112929265 A CN112929265 A CN 112929265A
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- 230000008859 change Effects 0.000 abstract description 2
- 238000004891 communication Methods 0.000 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
- H04L45/58—Association of routers
- H04L45/586—Association of routers of virtual routers
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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
- 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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Abstract
The invention discloses a method for any node to place any node of VRRP in a main mode in real time, which can set any node of VRRP as a main node in real time, and solves the problems that the network quality is influenced and even the network is broken because time delay is caused by the fact that a certain node needs to be adjusted to be the main node in real time and the node cannot be logged in to modify the priority due to the change of the network environment; the effectiveness and the real-time performance of network deployment and network switching are effectively ensured, and the competitiveness of products is improved.
Description
Technical Field
The invention relates to the technical field of network communication, in particular to a method for any node to place a VRRP (virtual router redundancy protocol) arbitrary node in a real-time manner.
Background
VRRP (Virtual Router Redundancy Protocol). The router consists of a main router and a plurality of backup routers, and is functionally equivalent to a virtual router. Each router in the group periodically sends VRRP notification messages to all routers in the group to notify configuration information and working conditions (priority and the like), and according to the priority, a main router is selected to bear the gateway function. And the other routers serve as backup routers, and when the main router fails, the main router is replaced to continue to fulfill gateway responsibilities, so that the hosts in the network are ensured to continuously communicate with the external network.
With the rapid development of networks, in order to provide reliable data communication services, VRRP is widely adopted by manufacturers of various data communication products (routers, switches, firewalls, load balancing, etc.) to implement a cluster redundancy mechanism, thereby improving the reliability and competitiveness of the products. Because of the numerous data communication products, the router of the VRRP is uniformly modified into the node.
The prior art is as follows: under the VRRP networking environment, each VRRP node starts a preemption mode and competes out a main node according to each priority (default 150); if the priority of a certain backup node A is higher, but the priority increment is not larger than the preemption threshold compared with the main node, the main node and the backup node are not switched, otherwise, the node A is switched to the main node.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the technology and provide a method for any node to place a VRRP arbitrary node in a main mode in real time.
In order to solve the technical problem, the technical scheme provided by the invention is a method for any node to place a VRRP arbitrary node in a real-time manner, which comprises the following steps:
(1) logging in any node C, and designating an ideal node A as an expected main node;
(2) the node C sends a VRRP notification message;
(3) when receiving the notification message, the node A dynamically increases the operation priority to the maximum value;
(4) the priority difference between the node A and the main node is larger than a preemption threshold, and the node A is switched to be a main node;
(5) after a period of time, the priority of the node A is restored;
(6) at this time, the priorities of other nodes in the group are all smaller than the sum of the priority of the node A and the preemption threshold, so the state is stable.
As an improvement, the VRRP advertisement message carries information of an intended master node a.
As an improvement, the period of time is more than one advertisement period.
Compared with the prior art, the invention has the advantages that: any node of the VRRP can be set as a master node in real time at any node, so that the problems that the network quality is influenced and even the network is disconnected due to time delay caused by the fact that a certain node needs to be adjusted to be the master node in real time and the node cannot be logged in to modify the priority due to the change of the network environment are solved; the effectiveness and the real-time performance of network deployment and network switching are effectively ensured, and the competitiveness of products is improved.
Drawings
Fig. 1 is a flow chart of a method for any node to place a VRRP arbitrary node in a real-time manner according to the present invention.
Fig. 2 is a schematic equipment diagram of a method for any node to real-time place a VRRP arbitrary node in the present invention.
Detailed Description
The following describes in detail a method for any node to real-time place a VRRP arbitrary node in the present invention with reference to the accompanying drawings.
With reference to fig. 1-2, a method for any node to real-time master a VRRP arbitrary node includes the following steps:
(1) logging in any node C, and designating an ideal node A as an expected main node;
(2) the node C sends a VRRP notification message;
(3) when receiving the notification message, the node a dynamically increases the operation priority to the maximum value (e.g. 250);
(4) the priority difference between the node A and the main node is larger than a preemption threshold, and the node A is switched to be a main node;
(5) after a period of time, the priority of the node A is restored;
(6) at this time, the priorities of other nodes in the group are all smaller than the sum of the priority of the node A and the preemption threshold, so the state is stable.
As an improvement, the VRRP advertisement message carries information of an intended master node a.
The period of time is more than one advertisement period.
The working principle of the invention is as follows: logging in any node C, and designating an ideal node A as an expected main node; the node C sends a VRRP notification message (carrying the information of the expected main node A); when receiving the notification message, the node a dynamically increases the operation priority to the maximum value (e.g. 250); at the moment, the priority difference between the node A and the main node is larger than the preemption threshold, and the node A is switched to be the main node; after a period of time (e.g., 3 advertisement periods), the priority of node a is restored; at this time, the priorities of other nodes in the group are all smaller than the sum of the priority of the node A and the preemption threshold, so the state is stable; thus, the main nodes are smoothly switched while the configuration of each node is kept unchanged.
The specific implementation mode of the invention is as follows: according to an embodiment of fig. 2, the device parameters: device A: device ID 1; a priority 155; a preemption mode; preemption threshold 20; device B: device ID 2; a priority 150; a preemption mode; preemption threshold 20; device C: device ID 3; a priority 150; a preemption mode; seizing a threshold value 20, wherein the current master node is a Device A, and the Device B and Device C nodes are backup nodes; and logging in the Device B node, and designating the Device C node as an expected main node, rapidly switching the Device C node into a main node, and taking the Device A node and the Device B node as backup nodes.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" means two or more unless explicitly specifically defined otherwise.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
In the description herein, reference to the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A method for any node to place VRRP any node in real time is characterized in that: the method comprises the following steps:
(1) logging in any node C, and designating an ideal node A as an expected main node;
(2) the node C sends a VRRP notification message;
(3) when receiving the notification message, the node A dynamically increases the operation priority to the maximum value;
(4) the priority difference between the node A and the main node is larger than a preemption threshold, and the node A is switched to be a main node;
(5) after a period of time, the priority of the node A is restored;
(6) at this time, the priorities of other nodes in the group are all smaller than the sum of the priority of the node A and the preemption threshold, so the state is stable.
2. The method of any node for real-time master of VRRP arbitrary node according to claim 1, characterized by that: the VRRP notification message carries information of an expected host node A.
3. The method of any node for real-time master of VRRP arbitrary node according to claim 1, characterized by that: the period of time is more than one advertisement period.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114221902A (en) * | 2021-11-26 | 2022-03-22 | 上海弘积信息科技有限公司 | Method for switching VRRP master and slave according to specified sequence |
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2021
- 2021-02-08 CN CN202110169827.5A patent/CN112929265A/en active Pending
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| US20090113053A1 (en) * | 2007-10-24 | 2009-04-30 | David Van Wie | Automated real-time data stream switching in a shared virtual area communication environment |
| CN101945036A (en) * | 2009-07-08 | 2011-01-12 | 中兴通讯股份有限公司 | Judging method for failure of main router of virtual route redundancy protocol and router |
| CN101635648A (en) * | 2009-08-05 | 2010-01-27 | 中兴通讯股份有限公司 | Method for managing and rapidly switching virtual redundant route protocol group |
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