CN114039907A - Method for improving link stability based on network card binding - Google Patents
Method for improving link stability based on network card binding Download PDFInfo
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- CN114039907A CN114039907A CN202111231027.8A CN202111231027A CN114039907A CN 114039907 A CN114039907 A CN 114039907A CN 202111231027 A CN202111231027 A CN 202111231027A CN 114039907 A CN114039907 A CN 114039907A
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- link
- network card
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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
- H04L45/12—Shortest path evaluation
- H04L45/123—Evaluation of link metrics
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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
Abstract
The invention particularly relates to a method for improving link stability based on network card binding. The method for improving the link stability based on network card binding comprises the following steps of firstly, carrying out network card binding on a server network card, and setting a binding mode as a main-standby mode; then executing a system command to view the current main link; and monitoring the packet loss rate of the binding port, judging whether the packet loss rate is greater than a set threshold value, and executing a command to switch the link to a standby link after the packet loss rate is greater than the set threshold value. The method for improving the link stability based on network card binding can switch the link to the standby link in time under the condition that packet loss occurs in the main link, thereby ensuring normal communication of the network and improving the link stability.
Description
Technical Field
The invention relates to the technical field of communication network management, in particular to a method for improving link stability based on network card binding.
Background
In networking, the connection of a single link is easy to implement, but a simple failure can cause network disruption. Therefore, in the process of actual network establishment, in order to ensure the stability of the network, some backup connections are usually used to improve the robustness and stability of the network, and such backup connections are also called backup links or redundant links.
With the development of the technology, a plurality of ethernet cards are configured for a server, and in a production environment, two network cards of the server are bound to realize hot standby of the network cards in order to ensure the network stability of the server. The network card binding has 7 modes, namely a balanced polling mode, a main standby mode, an exclusive or balanced mode, a broadcast mode, a dynamic link aggregation mode, an adapter transmission load balanced mode and an adapter load balanced mode.
One port of the main/standby mode is in a main state, one port of the main/standby mode is in a slave state, all flows are processed on the main link, and no flow exists. The method has the fault tolerance function, the resource utilization rate is 1/N, and the data packets are transmitted based on the designated HASH transmission strategy.
In the active/standby mode, there are two links on the network, which are the main link and the standby link, respectively. The main and standby links adopt a priority mode, and the main and standby switching lines cannot be completed under the condition that a routing interface is not disconnected (down) through testing. When the main port is disconnected, the standby port can take over the main state from the port.
For the stability of server networking, a multi-network card binding is usually set. However, the network card binding in the active/standby mode only performs active/standby switching when the main port is disconnected, and no action is performed after the link is in a packet loss state. Based on the situation, the invention provides a method for improving the link stability based on network card binding.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a simple and efficient method for improving the link stability based on network card binding.
The invention is realized by the following technical scheme:
a method for improving link stability based on network card binding is characterized in that: the method comprises the following steps:
1) network card binding is carried out on the network card of the server, and the binding mode is set as a main-standby mode;
2) executing a system command to check a current main link;
3) and monitoring the packet loss rate of the bound port, judging whether the packet loss rate is greater than a set threshold value, and executing a command to switch the link to a standby link after the packet loss rate is greater than the set threshold value.
In the step 1), the server has at least two network cards connected to the switch to communicate with other server devices, and at least two links are primary and standby links.
In the step 2), network card link states of the server are obtained first, and if the link states of at least two network cards are yes, ping packet operation is performed on the IP connected with the server, and the fact that the network card is bound with the current main link is determined.
In the step 2), an ethtool command is adopted to obtain the link state of the network card of the server.
In the step 2), ping packet operation is carried out on the IP of the connection server by adopting a ping packet command and an-i-c command.
In the step 2), the network card is determined to bind the current main link by looking up the system file/proc/net/binding 0.
In the step 3), a/usr/sbin/ifenslave-c command is adopted to switch the link.
In the step 3), the packet loss rate threshold is set to be 7%, 9%, 10% or 12%.
The invention has the beneficial effects that: the method for improving the link stability based on network card binding can switch the link to the standby link in time under the condition that packet loss occurs in the main link, thereby ensuring normal communication of the network and improving the link stability.
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 introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a method for improving link stability based on network card binding according to the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the embodiment of the present invention. 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.
The network structure is divided into an access layer, a convergence layer and a core layer:
the access layer is responsible for connecting the terminals; the convergence layer is responsible for processing data communication of the access layer switch; the core layer is responsible for handling the convergence layer (typically a three-layer switch) and routing.
The access layer, the convergence layer and the core layer adopt some protocols (such as Spanning Tree Protocol (STP)) to form a plurality of redundant links for backup.
A network link is a routed path that selects which gateway or router to traverse. The link structure refers to two-layer and three-layer equipment used in the network and what network protocol is used to achieve network intercommunication.
The method for improving the link stability based on network card binding comprises the following steps:
1) network card binding is carried out on the network card of the server, and the binding mode is set as a main-standby mode;
2) executing a system command to check a current main link;
3) and monitoring the packet loss rate of the bound port, judging whether the packet loss rate is greater than a set threshold value, and executing a command to switch the link to a standby link after the packet loss rate is greater than the set threshold value.
In the step 1), the server has at least two network cards connected to the switch to communicate with other server devices, and at least two links are primary and standby links.
In the step 2), network card link states of the server are obtained first, and if the link states of at least two network cards are yes, ping packet operation is performed on the IP connected with the server, and the fact that the network card is bound with the current main link is determined.
In the step 2), an ethtool command is adopted to obtain the link state of the network card of the server.
The ethatools command is a command for querying and setting network card parameters,
in the step 2), ping packet operation is carried out on the IP of the connection server by adopting a ping packet command and an-i-c command.
In the step 2), the network card is determined to bind the current main link by looking up the system file/proc/net/binding 0.
In the step 3), a/usr/sbin/ifenslave-c command is adopted to switch the link.
In practical application, a user can set a packet loss rate threshold according to actual requirements. The lower the packet loss rate threshold, the more frequent the switching of the main link and the standby link. If the packet loss rate threshold is set to be too high, the main link and the standby link are not switched in time, and network congestion cannot be relieved in time; however, if the packet loss threshold is set too low, frequent switching between the main link and the standby link may also cause network connection delay. Therefore, when setting the packet loss rate threshold, the network requirements of the server and the software and hardware conditions of the server should be considered comprehensively.
In the step 3), the packet loss rate threshold is set to be 7%, 9%, 10% or 12%. If the requirement of the application software on the network connection of the server is not high, the set value of the packet loss rate can be further relaxed, and specifically, any value which is greater than 0 and less than 100% can be set.
An example of network security control script code based on access control is as follows:
the method for improving the link stability based on network card binding in the embodiment of the present invention is described in detail above. While the present invention has been described with reference to specific examples, which are provided to assist in understanding the core concepts of the present invention, it is intended that all other embodiments that can be obtained by those skilled in the art without departing from the spirit of the present invention shall fall within the scope of the present invention.
Claims (8)
1. A method for improving link stability based on network card binding is characterized in that: the method comprises the following steps:
1) network card binding is carried out on the network card of the server, and the binding mode is set as a main-standby mode;
2) executing a system command to check a current main link;
3) and monitoring the packet loss rate of the bound port, judging whether the packet loss rate is greater than a set threshold value, and executing a command to switch the link to a standby link after the packet loss rate is greater than the set threshold value.
2. The method for improving link stability based on network card binding of claim 1, wherein: in the step 1), the server has at least two network cards connected to the switch to communicate with other server devices, and at least two links are primary and standby links.
3. The method for improving link stability based on network card binding according to claim 1, wherein: in the step 2), network card link states of the server are obtained first, and if the link states of at least two network cards are yes, ping packet operation is performed on the IP connected with the server, and the fact that the network card is bound with the current main link is determined.
4. The method for improving link stability based on network card binding according to claim 3, wherein: in the step 2), an ethtool command is adopted to obtain the link state of the network card of the server.
5. The method for improving link stability based on network card binding according to claim 3, wherein: in the step 2), ping packet operation is carried out on the IP of the connection server by adopting a ping packet command and an-i-c command.
6. The method for improving link stability based on network card binding according to claim 3, wherein: in the step 2), the network card is determined to bind the current main link by looking up the system file/proc/net/binding 0.
7. The method for improving link stability based on network card binding according to claim 1, wherein: in the step 3), a/usr/sbin/ifenslave-c command is adopted to switch the link.
8. The method for improving link stability based on network card binding according to claim 1, wherein: in the step 3), the packet loss rate threshold is set to be 7%, 9%, 10% or 12%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111231027.8A CN114039907A (en) | 2021-10-22 | 2021-10-22 | Method for improving link stability based on network card binding |
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| CN202111231027.8A CN114039907A (en) | 2021-10-22 | 2021-10-22 | Method for improving link stability based on network card binding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114793211A (en) * | 2022-06-21 | 2022-07-26 | 新华三信息技术有限公司 | Service multilink backup method and device based on blade service |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105049284A (en) * | 2015-07-09 | 2015-11-11 | 浪潮电子信息产业股份有限公司 | Linux system-based network redundancy testing method and device |
| CN111726246A (en) * | 2020-05-29 | 2020-09-29 | 苏州浪潮智能科技有限公司 | Main/standby network card switching method and device in network card binding mode and storage medium |
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- 2021-10-22 CN CN202111231027.8A patent/CN114039907A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049284A (en) * | 2015-07-09 | 2015-11-11 | 浪潮电子信息产业股份有限公司 | Linux system-based network redundancy testing method and device |
| CN111726246A (en) * | 2020-05-29 | 2020-09-29 | 苏州浪潮智能科技有限公司 | Main/standby network card switching method and device in network card binding mode and storage medium |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114793211A (en) * | 2022-06-21 | 2022-07-26 | 新华三信息技术有限公司 | Service multilink backup method and device based on blade service |
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