CN113162803A - Serial port control method, device and medium based on dichotomy - Google Patents
Serial port control method, device and medium based on dichotomy Download PDFInfo
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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
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
Abstract
The embodiment of the specification discloses a serial port control method, equipment and a medium based on dichotomy. The method is used for solving the problem that the configuration issuing of the switch fails due to the fact that the serial server issues the command configuration and the configuration of the command configuration is mistaken because the input overflows when the serial server issues the command configuration. The method comprises the following steps: determining that a first serial port of a serial server is connected with a second serial port of a switch through a serial port line; connecting the first serial port through a command configuration issuing tool, and logging in the switch; the command configuration issuing tool controls the first serial port to issue command configuration to the switch in a character-by-character issuing mode; and determining the shortest waiting time required to wait between the issuing of each character by a dichotomy.
Description
Technical Field
The invention relates to a network communication technology, in particular to a serial port control method, equipment and medium based on dichotomy.
Background
At present, in a test of a switch, the switch is generally connected with a serial port in a serial server through the switch, the switch is logged in through controlling the serial port, and command configuration is issued to the switch. In the command configuration issuing process, command configuration is manually issued, and when a large amount of command configuration exists, the command configuration issuing speed is low, and the test efficiency of the switch is influenced. When the command configuration is automatically issued, the command configuration can only be issued in a command line mode, and when the command line characters exceed the size of an input cache region of a serial server, serial port overflow is caused, so that command configuration issuing failure is caused, a test result is influenced, and the test efficiency is low.
Therefore, it is necessary to automatically issue a command configuration method without causing an overflow error in the input buffer of the serial server when the command line characters are too many, so as to improve the efficiency and stability of the switch test.
Disclosure of Invention
One or more embodiments of the present specification provide a serial port control method, device, and medium based on a dichotomy. To solve the following problems: the problem that the configuration of the switch fails to be issued is caused by errors when the serial server issues the command configuration due to overflow of input when the serial server issues the command configuration.
To solve the above technical problem, one or more embodiments of the present specification are implemented as follows:
in one aspect, a serial port control method based on dichotomy provided in one or more embodiments of the present specification includes:
determining that a first serial port of a serial server is connected with a second serial port of a switch through a serial port line;
connecting the first serial port through a command configuration issuing tool, and logging in the switch;
the command configuration issuing tool controls the first serial port to issue command configuration to the switch in a character-by-character issuing mode;
and determining the shortest waiting time required to wait between the issuing of each character by a dichotomy.
The issuing mode of the command configuration is improved from issuing the whole command line to issuing the command line one by one, and the shortest time of each character issuing interval is determined by using a dichotomy, so that the problem of abnormal issuing of the switch configuration caused by serial port overflow is solved, the issuing speed of the command configuration is increased, and the test efficiency of the switch is improved while the test stability is ensured.
Optionally, the controlling, by the command configuration issuing tool, the first serial port to issue the command configuration to the switch in a manner of issuing character by character specifically includes:
writing the command configuration in an automation script provided by the command configuration issuing tool;
and issuing command configuration to the switch in a character-by-character issuing mode by utilizing the automatic script.
The command configuration is written in the script, and the automatic test of the switch is facilitated.
Optionally, the determining, by a bisection method, the shortest waiting time that needs to be waited between issuing each character specifically includes:
setting a waiting time interval and time precision;
repeatedly executing the issuing process until the waiting time interval reaches the preset requirement;
the issuing process comprises the following steps:
taking the middle value of the waiting time interval as waiting time;
issuing the command configuration to the switch in a character-by-character issuing mode, and testing the switch;
judging whether configuration errors occur or not;
if so, taking a part of the waiting time interval on the right side of the waiting time interval as a new waiting time interval;
and if the waiting time interval does not appear, taking a part of the waiting time interval on the left side of the waiting time interval as a new waiting time interval.
Optionally, the time precision is set to be accurate to 3 bits after the decimal point.
Optionally, the preset requirements include:
and when the difference between the left end point value and the right end point value of the waiting time interval is not more than 0.001s, stopping executing the issuing process.
Optionally, after the waiting time interval reaches a preset requirement, the method further includes:
setting a right endpoint value of the wait time interval to be a shortest wait time.
Optionally, determining that the shortest wait time does not exceed 0.640 s;
if the minimum waiting time is exceeded, 0.640s is taken as the minimum waiting time.
Optionally, the shortest waiting time is taken as the shortest waiting time of other switches in the same series as the switch.
In another aspect, a serial port control device based on dichotomy provided in one or more embodiments of the present specification includes:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to cause the at least one processor to perform:
determining that a first serial port of a serial server is connected with a second serial port of a switch through a serial port line;
connecting the first serial port through a command configuration issuing tool, and logging in the switch;
the command configuration issuing tool controls the first serial port to issue command configuration to the switch in a character-by-character issuing mode;
and determining the shortest waiting time required to wait between the issuing of each character by a dichotomy.
In another aspect, one or more embodiments of the present specification further provide a storage medium including: the storage medium is a non-volatile computer-readable storage medium storing at least one program, each of the programs including instructions that, when executed by a terminal, cause the terminal to perform the above-described method.
At least one technical scheme adopted by one or more embodiments of the specification can achieve the following beneficial effects:
1. the command configuration is issued in a character-by-character issuing mode, sufficient buffer time is given to the serial port, the problem of switch configuration issuing failure caused by serial port overflow is solved, and compared with the traditional command configuration issuing mode, the scheme of the invention has more stability for the result of command configuration issuing.
2. The waiting time issued by each character is acquired by adopting a dichotomy, the shortest waiting time issued by each character can be determined, and the testing efficiency of the switch is improved while the stability of the switch testing is ensured.
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In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present specification, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a schematic flowchart of a serial port control method based on dichotomy according to one or more embodiments of the present disclosure;
fig. 2 is a schematic diagram illustrating a connection between a serial server and a switch according to one or more embodiments of the present disclosure;
fig. 3 is a schematic flowchart illustrating a process of determining a shortest waiting time for issuing each character based on dichotomy according to one or more embodiments of the present disclosure;
fig. 4 is a schematic diagram of a character-by-character issuing manner according to one or more embodiments of the present disclosure;
fig. 5 is a schematic structural diagram of a serial port control device based on dichotomy according to one or more embodiments of the present specification.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments of the present disclosure, shall fall within the scope of protection of the present application.
The technical solutions provided by the embodiments of the present description are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic flowchart of a serial port control method based on dichotomy according to one or more embodiments of the present specification.
S101: and determining that the first serial port of the serial server is connected with the second serial port of the switch through a serial port line.
S102: and connecting the first serial port through a command configuration issuing tool to log in the switch.
Fig. 2 is a schematic diagram of a connection between a serial server and a switch according to one or more embodiments of the present disclosure. As shown in fig. 2, the first serial port of the serial server and the first serial port of the switch are interconnected through a serial port line, and the command configuration issuing tool logs in the switch by controlling the first serial port of the serial server, so as to control the switch. The command configuration issuing tool comprises a SecureRTPort, button, Python and the like.
S103: and the command configuration issuing tool controls the first serial port to issue command configuration to the switch in a character-by-character issuing mode.
In one or more embodiments of the present description, the command configuration is written in an automation script provided by a command configuration issuing tool; and issuing command configuration to the switch in a character-by-character issuing mode by utilizing the automatic script. The automation script containing the command configuration can be reused.
Taking a command configuration issuing tool Python as an example, the command configuration issuing tool Python is connected with a serial port through a telnet function of a Python program, logs in a switch, and issues command configuration of the switch through controlling the serial port, so that the switch is controlled. The instruction configuration is issued by using the Telnet library function program of Python, the instruction configuration does not need to be manually input, and the issuing speed of the instruction configuration can be greatly increased.
When a telnet library function program in Python is used for connecting a serial port to log in a switch to issue command configuration for switch testing, the command configuration can be written in a script in advance, and the automatic testing of the switch is facilitated. The command configuration written in the script may be reused during the switch test.
After the telnet library of Python is connected with a serial port login switch, command configuration is issued in a character-by-character issuing mode instead of issuing the whole command line together, so that the problem of serial port overflow caused by issuing the whole command line together when the command line has too many characters is solved, and the stability of switch test is ensured.
S104: and determining the shortest waiting time required to wait between the issuing of each character by a dichotomy.
In one or more embodiments of the present description, the shortest latency for issuing each character is determined by dichotomy. The process of determining the shortest waiting time required to wait between the issuance of each character is: setting a waiting time interval and time precision; repeatedly executing the issuing process until the waiting time interval reaches the preset requirement; the issuing process comprises the following steps: taking the middle value of the waiting time interval as waiting time; issuing command configuration to a switch in a character-by-character issuing mode, and testing the switch; judging whether configuration errors occur or not; if so, taking a part of the waiting time interval on the right side of the waiting time interval as a new waiting time interval; and if the waiting time interval does not appear, taking a part of the waiting time interval on the left side of the waiting time interval as a new waiting time interval. The preset requirement is that when the difference between the left end point value and the right end point value of the waiting time interval is not more than 0.001s, the issuing process is stopped. The left end point value of the waiting time interval is the minimum value, and the right end point value of the waiting time interval is the maximum value.
In one or more embodiments of the present description, the time precision is set to 3 bits after the decimal point. The right endpoint value of the latency interval is set to the shortest latency. The shortest latency is taken as the shortest latency of other switches in the same series as the switch. Determining that the shortest waiting time does not exceed 0.640 s; if the time exceeds the predetermined time, 0.640s is set as the shortest waiting time.
For the switches in the same series, the same command configuration does not need to be input again when the switches are tested one by one, and the shortest waiting time is also the same. Wherein, the same series refers to the switches of the same model or the switches produced by the same manufacturer.
Fig. 3 is a flowchart illustrating a process of determining a shortest waiting time for issuing each character based on dichotomy according to one or more embodiments of the present disclosure.
Taking the latency interval of 0 to 0.640s as an example, the time is accurate to 3 bits after the decimal point. In the switch test, the waiting time is set to be not more than 0.640s, and the switch test efficiency is reduced because overlong time is not consumed when one command line is issued.
Taking the middle value 0.320s of the waiting time interval as waiting time, logging in the switch through a telnet library of Python, issuing command configuration to the switch in a character-by-character issuing mode, wherein the waiting time after each character is issued is 0.320s, after a large number of command configurations are issued to the switch, if no command line configuration errors occur, taking the left end point value of the waiting time interval as a left end point, taking the middle value of the waiting time interval as a right end point, forming a new waiting time interval, namely taking the partial time waiting interval on the left side of the waiting time interval as a new waiting time interval, taking the new waiting time interval from 0 to 0.320s, and taking the middle value 0.160s of the new waiting time interval as the waiting time.
If the command line configuration is wrong, taking the right end value of the waiting time interval as a right end point and the middle value of the waiting time interval as a left end point to form a new waiting time interval, namely taking the part of the waiting time interval on the right side of the waiting time interval as a new waiting time interval, wherein the new waiting time interval is 0.320s to 0.640s, and the waiting time is 0.480s which is the middle value of the waiting time interval.
Taking the new waiting time interval of 0 to 0.320s and the waiting time of 0.160s as an example, the command configuration is repeatedly executed and issued to the switch in a character-by-character issuing mode, the switch is tested, and whether the configuration error occurs is determined. And repeatedly executing the issuing process until an optimal time is found, so that the shortest waiting time for the serial port not to overflow is met.
Fig. 4 is a schematic diagram of a character-by-character issuing method according to one or more embodiments of the present disclosure.
After the shortest waiting time is determined, when the functional program in the Telnet library of Python is used for issuing command configuration, one character is issued each time, and the next character is issued after the shortest waiting time until the whole command line is issued. When the next command is configured, the next command is issued according to characters one by one, the shortest waiting time is waited between every two characters, the configuration issuing of the switch is completed, the stability of the switch in the testing process is ensured, and the testing efficiency of the switch is improved.
Fig. 5 is a schematic structural diagram of a serial port control device based on dichotomy according to one or more embodiments of the present specification, where the device includes:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to cause the at least one processor to perform:
determining that a first serial port of a serial server is connected with a second serial port of a switch through a serial port line;
connecting the first serial port through a command configuration issuing tool, and logging in the switch;
the command configuration issuing tool controls the first serial port to issue command configuration to the switch in a character-by-character issuing mode;
and determining the shortest waiting time required to wait between the issuing of each character by a dichotomy.
At least one technical scheme adopted by one or more embodiments of the present specification solves the problem that the switch configuration issue fails due to an error in the serial server issuing command configuration caused by an input overflow when the serial server issues command configuration.
One or more embodiments of the present specification provide a storage medium, which is a non-volatile computer-readable storage medium storing at least one program, each of the programs including instructions, which, when executed by a terminal, cause the terminal to perform the above-described method.
At least one technical scheme adopted by one or more embodiments of the specification can achieve the following beneficial effects:
1. the command configuration is issued in a character-by-character issuing mode, sufficient buffer time is given to the serial port, the problem of switch configuration issuing failure caused by serial port overflow is solved, and compared with the traditional command configuration issuing mode, the scheme of the invention has more stability for the result of command configuration issuing.
2. The waiting time issued by each character is acquired by adopting a dichotomy, the shortest waiting time issued by each character can be determined, and the testing efficiency of the switch is improved while the stability of the switch testing is ensured.
The embodiments in the present application are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
The above description is merely one or more embodiments of the present disclosure and is not intended to limit the present disclosure. Various modifications and alterations to one or more embodiments of the present description will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of one or more embodiments of the present specification should be included in the scope of the claims of the present specification.
Claims (10)
1. A serial port control method based on dichotomy is characterized by comprising the following steps:
determining that a first serial port of a serial server is connected with a second serial port of a switch through a serial port line;
connecting the first serial port through a command configuration issuing tool, and logging in the switch;
the command configuration issuing tool controls the first serial port to issue command configuration to the switch in a character-by-character issuing mode;
and determining the shortest waiting time required to wait between the issuing of each character by a dichotomy.
2. The method according to claim 1, wherein the step of issuing the command configuration to the switch in a character-by-character manner by controlling the first serial port through the command configuration issuing tool specifically comprises:
writing the command configuration in an automation script provided by the command configuration issuing tool;
and issuing command configuration to the switch in a character-by-character issuing mode by utilizing the automatic script.
3. The method according to claim 1, wherein the determining the shortest waiting time to wait between the issuing of each character by the bisection method specifically comprises:
setting a waiting time interval and time precision;
repeatedly executing the issuing process until the waiting time interval reaches the preset requirement;
the issuing process comprises the following steps:
taking the middle value of the waiting time interval as waiting time;
issuing the command configuration to the switch in a character-by-character issuing mode, and testing the switch;
judging whether configuration errors occur or not;
if so, taking a part of the waiting time interval on the right side of the waiting time interval as a new waiting time interval;
and if the waiting time interval does not appear, taking a part of the waiting time interval on the left side of the waiting time interval as a new waiting time interval.
4. The method of claim 3, further comprising:
and setting the time precision to be 3 bits after the decimal point.
5. The method of claim 3, wherein the preset requirements comprise:
and when the difference between the left end point value and the right end point value of the waiting time interval is not more than 0.001s, stopping executing the issuing process.
6. The method of claim 3, wherein after the wait time interval reaches a preset requirement, the method further comprises:
setting a right endpoint value of the wait time interval to be a shortest wait time.
7. The method of claim 4, further comprising:
determining that the shortest wait time does not exceed 0.640 s;
if the minimum waiting time is exceeded, 0.640s is taken as the minimum waiting time.
8. The method of claim 6, further comprising:
and taking the shortest waiting time as the shortest waiting time of other switches in the same series with the switch.
9. A serial port control device based on dichotomy is characterized by comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to cause the at least one processor to perform:
determining that a first serial port of a serial server is connected with a second serial port of a switch through a serial port line;
connecting the first serial port through a command configuration issuing tool, and logging in the switch;
the command configuration issuing tool controls the first serial port to issue command configuration to the switch in a character-by-character issuing mode;
and determining the shortest waiting time required to wait between the issuing of each character by a dichotomy.
10. A storage medium, characterized in that the storage medium is a non-volatile computer-readable storage medium storing at least one program, each of the programs comprising instructions which, when executed by a terminal, cause the terminal to perform the method according to any one of claims 1-8.
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