CN112291383A - IP address allocation method and system - Google Patents
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- CN112291383A CN112291383A CN202011104506.9A CN202011104506A CN112291383A CN 112291383 A CN112291383 A CN 112291383A CN 202011104506 A CN202011104506 A CN 202011104506A CN 112291383 A CN112291383 A CN 112291383A
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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
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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
- H04L61/5046—Resolving address allocation conflicts; Testing of addresses
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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
- H04L61/5061—Pools of addresses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/695—Types of network addresses using masks or ranges of addresses
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Abstract
The invention discloses an IP address allocation method and system, belonging to the technical field of IP address allocation and comprising the following steps: s1: storing the IP addresses with the planned purposes in a warehouse; s2: receiving a service request and analyzing the purpose and the mask of the IP address; s3: searching an IP address field; s4: inquiring an idle subnet; s5: marking the IP address in the idle subnet and changing the subnet state as occupied. The method only needs to record the planned IP address field into the database before the service is developed, and records the IP address field into the database, so that the data volume is small, the single IP address is managed, and the errors in the manual recording process are greatly reduced; the problems that in the IP address allocation process, efficiency is low, and allocated IP addresses cannot be reasonably, effectively and continuously managed are solved.
Description
Technical Field
The invention relates to the technical field of IP address allocation, in particular to an IP address allocation method and system.
Background
In the network construction, network equipment such as a switch, a router and the like needs to be allocated with corresponding IP (Internet protocol) addresses on line; when the network equipment and the network equipment establish a relay circuit, IP addresses also need to be allocated to corresponding network ports; and (4) after the subsequent service is opened, an IP address needs to be allocated to the client. Efficient, orderly and reasonable IP address allocation is a very important problem.
IP address assignment is currently divided into manual assignment and automatic assignment. The manual allocation of the IP addresses mainly comprises the steps of sequentially storing the IP addresses according to a sequence and manually allocating the IP addresses according to requirements. The manual allocation has uncertainty, the allocated IP addresses have high randomness, when large batches of IP addresses need to be allocated, the efficiency is low, the time cost is high, and meanwhile, the sustainable management of subsequent IP addresses is inconvenient. The automatic IP address allocation method comprises a binary tree allocation method and an incremental allocation method at present, a subnet allocated by the binary tree has a discontinuous interval, namely, the IP address is discontinuous, and the phenomenon of repeated allocation of a large mask and a small mask in the allocation process of the incremental allocation method can occur.
The above allocation method has certain disadvantages in the allocation process, such as low allocation efficiency, and inability to reasonably and effectively continuously manage the allocated IP addresses, and therefore, a method and a system for allocating IP addresses are provided.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to solve the problems of low allocation efficiency and incapability of reasonably and effectively continuously managing the allocated IP addresses in the existing IP address allocation method, and provides an IP address allocation method.
The invention solves the technical problems through the following technical scheme, and the invention comprises the following steps:
s1: warehousing the IP addresses with planned use
Before the service is opened, establishing a corresponding IP address pool according to different purposes of the IP address field with the planned purpose, establishing a relation between the purpose and the IP address pool, and storing the IP address field into the corresponding IP address pool according to the purpose; the purpose of each IP address segment is defined, and the disorder of the IP addresses caused by the unavailable purpose is prevented from the source;
s2: accepting service requests and analyzing IP address usage and masks
Receiving a service request, analyzing the application corresponding to the IP address to be distributed and the required number of the IP addresses according to the field in the service request, and calculating a corresponding IP address mask according to the required number of the IP addresses;
s3: looking up IP address field
According to the IP address use and the IP address mask in the step S2, searching an IP address field in an address pool with a corresponding use;
s4: querying for free subnets
Traversing the IP address fields in the step S3, and sequentially inquiring the idle subnets;
s5: marking IP addresses in idle subnets and changing subnet states to occupied
And according to the idle subnet inquired in the step S4, marking the subnet bit, the broadcast bit and the available IP address of the IP address, and meanwhile, marking the inquired idle subnet state as an occupied state in the database to acquire the IP address for the service.
Further, in the step S1, the specific process of establishing the relationship between the usage and the IP address pool is as follows:
s11: establishing a corresponding enumeration value according to the use required in the actual service, and simultaneously establishing an attribute field in a record stored in an IP address pool, wherein the attribute field is named as the use of the IP address pool;
s12: the data record of the IP address pool is directly operated and stored, an attribute field of the use of the IP address pool is newly established on the data record, and the use enumeration value needing to be associated is filled in the attribute field, so that the purpose association of the IP address pool and the IP address pool is realized.
Further, in the step S2, the specific process of analyzing the usage corresponding to the IP address to be allocated and the required number of IP addresses according to the field in the service request includes:
s21: according to the actual system service requirement, preparing records of service and IP address use and quantity in a system database;
service 1, IP address use 1 and IP number 4;
service 2, IP address use 2, IP number 4;
……
s22: according to the service type in the service request, finding out the corresponding IP address use and the number of the IP addresses in a system database;
s23: and calculating corresponding masks according to the number of the IP addresses.
Further, in the step S3, the specific process of searching for the IP address field is as follows:
s31: inquiring an IP address pool corresponding to the purpose according to the purpose of the IP address field;
s32: an IP address segment that can be used is looked up in the IP address pool.
Further, in the step S4, the specific process of querying the idle subnet is as follows:
s41: judging whether the IP address field splits the subnet or not, if the subnet is not split, generating a subnet of the current IP address field, and if the subnet is split, acquiring all available subnets under the IP address field;
s42: filtering out the subnets of the target mask in the subnet set;
s43: it is determined whether there is a subnet of the target mask in step S42, and if so, the subnet is acquired.
Further, in step S43, if there is no subnet of the target mask, the following steps are performed:
s431: obtaining a corresponding mask according to the IP address field;
s432: traversing from a mask bit immediately preceding the target mask bit to a minimum mask bit;
s433: acquiring a detachable subnet record set (idle) corresponding to the mask bit, and traversing;
s434: deleting the current subnet, dividing the subnet into two parts, and generating two new subnets which are marked as subnet 1 and subnet 2; (binary subnets, e.g. one IP subnet with a mask of/24 can be split into two/25 IP subnets)
S435: for the newly generated subnet, judging whether the subnet is a target mask bit, if so, adding the subnet into a target subnet set, if not, preferentially splitting the subnet 1, namely, circularly executing the steps S434-S435, and if circularly executing or not, acquiring the IP address meeting the condition, then executing the splitting operation as the subnet 1 on the subnet 2; until the condition is met or the split is not possible.
Further, if the subnet marked as the occupied state in step S5 does not need to be used, the use state in the subnet attribute is set to idle, and the subnet is put into the IP address pool for the next service.
The invention also provides an IP address allocation system, which allocates the IP address according to the service request by using the allocation method, and comprises the following steps:
the address pool planning module is used for establishing a corresponding IP address pool according to different purposes of the IP address field with the planned purpose before the service is opened, and establishing a relation between the purpose and the IP address pool, wherein the IP address field is stored in the corresponding IP address pool according to the purpose;
the application and mask analysis module is used for receiving the service request, analyzing the application corresponding to the IP address to be distributed and the required IP address number according to the field in the service request, and analyzing the corresponding IP address mask according to the required IP address number;
an address segment searching module, configured to search, according to the IP address usage and the IP address mask in step S2, an IP address segment in the address pool corresponding to the usage;
an idle subnet inquiry module, configured to traverse the IP address fields in step S3, and sequentially inquire idle subnets;
an address marking module, configured to mark a subnet bit, a broadcast bit, and an available IP address of the IP address according to the idle subnet queried in step S4, and mark a state of the idle subnet queried in the database as an occupied state;
the central processing module is used for sending instructions to each module to complete related actions;
the address pool planning module, the application and mask analysis module, the address field searching module, the idle subnet inquiring module and the address marking module are all connected with the central processing module.
Compared with the prior art, the invention has the following advantages: according to the IP address allocation method, the planned IP address field is only required to be input into the database before the business is developed, and the database is input in the form of the IP address field, so that the data volume is small, and the single IP address is managed, thereby greatly reducing errors in the manual input process; determining an IP address segment needing to be allocated and allocating the IP address through a mask before the IP address is actually allocated; the allocated IP addresses are marked in the allocation process, so that the problem of repeated allocation of the IP addresses is prevented; the IP address is distributed in the form of mask instead of the number of the IP addresses, so that the problems of idle waste of the IP address and IP address repetition caused by unfamiliarity with the mask are solved; by adopting the dichotomy, the left IP address is preferentially allocated, the allocated IP addresses are coherent, and a manager of the IP addresses can know the use condition of the whole IP address field only by paying attention to the allocated IP addresses, so that the method is worthy of popularization and use.
Drawings
FIG. 1 is a schematic overall flow chart in an embodiment of the present invention;
FIG. 2 is a flow chart illustrating an implementation of searching for an IP address field according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of an implementation of querying a free subnet in the embodiment of the present invention;
fig. 4 is a schematic flow chart of IP address allocation performed by using binary method in the embodiment of the present invention.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
As shown in fig. 1, the present embodiment provides a technical solution: an IP address allocation realized based on a self-research algorithm comprises the following steps:
before the service is opened, establishing a corresponding IP address pool according to different purposes for the IP address section with the planned purpose, establishing a relation between the purpose and the IP address pool, and storing the IP address section into the corresponding IP address pool according to the purpose, so that the purpose of each IP address section is clarified, and the disorder of the IP address due to different purposes is prevented from the source;
step two, receiving a service request, analyzing the application corresponding to the IP address to be distributed and the required number of the IP addresses according to the field in the service request, and calculating the corresponding IP address mask according to the required number of the IP addresses;
step three, searching an IP address section in an IP address pool with corresponding use according to the IP address use and the IP address mask in the step two;
step four, traversing the IP address fields in the step three, and sequentially inquiring the idle subnets;
step five, according to the idle subnet inquired in the step four, finding the corresponding IP address subnet record in the database record, setting the using state attribute in the record as occupation, and the inquired record is the needed IP address for the service.
It should be noted that, if the subnet marked as the occupied state in the step five does not need to be used, the use state in the subnet attribute is set to be idle, and the subnet is put into the IP address pool for the next service.
As shown in fig. 2, the step of searching for the IP address segment in step three includes the following steps:
branching one: inquiring an IP address pool corresponding to the purpose according to the purpose of the IP address field;
and branch two: an IP address segment that can be used is looked up in the IP address pool.
As shown in fig. 3, querying the free subnet in step four includes the following steps:
branching one: judging whether the IP address field splits the subnet or not, if the subnet is not split (two database tables are required to be prepared before the IP address is distributed and are respectively named as an IP address field table and a sub-netlist, the sub-netlist must have a field (which can be named as an IP address field ID), the subnet split by the IP address field is stored in the sub-netlist, and the two are associated with the IP address field ID through the IP address field ID attribute field of the sub-netlist so as to judge whether the IP address field is split or not), generating a subnet native to the current IP address field, and if the subnet is split, obtaining all available subnets under the IP address field;
and branch two: in the set of subnets, filtering out the subnets of the target mask,
and branch three: judging whether the subnet with the target mask exists in the branch two (the required target mask is already calculated when the service request is made, the attribute field of the subnet has the mask attribute, and after comparison, judging whether the subnet with the target mask exists or not), if not, executing the following substeps, as shown in fig. 4:
the first substep, according to IP address field, obtain the corresponding mask;
step two, traversing from the mask bit which is the last mask bit of the target mask bit to the minimum mask bit;
step three, acquiring a detachable subnet record set (idle) corresponding to the mask bit, and traversing;
deleting the current subnet, dividing into two subnets (two subnets, for example, an IP subnet with mask of 24 can be split into two IP subnets of 25), and generating two new subnets, which are marked as subnet 1 and subnet 2;
example IP address splitting:
the IP address field 1.1.1.0/24 can be split into two sub-networks of 1.1.1.0/25 and 1.1.1.128/25; 1.1.1.0/25 resolution down can be split into 1.1.1.0/26 and 1.1.1.64/26; and so on, the separation is carried out downwards.
And a fifth substep, judging whether the newly generated subnet is a target mask bit, adding the subnet into the target subnet set when the target mask bit is met, preferentially splitting the subnet 1 when the target mask bit is not met, namely circularly executing the fourth substep to the fifth substep, and if the target subnet is circularly executed or the IP address meeting the conditions cannot be acquired, executing the splitting operation as the subnet 1 on the subnet 2 until the conditions are met or the splitting cannot be performed.
To sum up, the IP address allocation method of the above embodiment only needs to record the planned IP address segment into the database before the service is developed, and records the planned IP address segment into the database in the form of an IP address segment, so that the data volume is small, and a single IP address is managed, thereby greatly reducing errors in the manual recording process; determining an IP address segment needing to be allocated and allocating the IP address through a mask before the IP address is actually allocated; the allocated IP addresses are marked in the allocation process, so that the problem of repeated allocation of the IP addresses is prevented; the IP address is distributed in the form of mask instead of the number of the IP addresses, so that the problems of idle waste of the IP address and IP address repetition caused by unfamiliarity with the mask are solved; by adopting the dichotomy, the left IP address is preferentially allocated, the allocated IP addresses are coherent, and a manager of the IP addresses can know the use condition of the whole IP address field only by paying attention to the allocated IP addresses, so that the method is worthy of popularization and use.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. An IP address assignment method, comprising:
s1: warehousing the IP addresses with planned use
Before the service is opened, establishing a corresponding IP address pool according to different purposes of the IP address field with the planned purpose, establishing a relation between the purpose and the IP address pool, and storing the IP address field into the corresponding IP address pool according to the purpose;
s2: accepting service requests and analyzing IP address usage and masks
Receiving a service request, analyzing the application corresponding to the IP address to be distributed and the required number of the IP addresses according to the field in the service request, and calculating a corresponding IP address mask according to the required number of the IP addresses;
s3: looking up IP address field
According to the IP address use and the IP address mask in the step S2, searching an IP address field in an address pool with a corresponding use;
s4: querying for free subnets
Traversing the IP address fields in the step S3, and sequentially inquiring the idle subnets;
s5: marking IP addresses in idle subnets and changing subnet states to occupied
And according to the idle subnet inquired in the step S4, marking the subnet bit, the broadcast bit and the available IP address of the IP address, and meanwhile, marking the inquired idle subnet state as an occupied state in the database to acquire the IP address for the service.
2. The IP address allocation method according to claim 1, wherein: in step S1, the specific process of establishing the relationship between the usage and the IP address pool is as follows:
s11: establishing a corresponding enumeration value according to the use required in the actual service, and simultaneously establishing an attribute field in a record stored in an IP address pool, wherein the attribute field is named as the use of the IP address pool;
s12: the data record of the IP address pool is directly operated and stored, an attribute field of the use of the IP address pool is newly established on the data record, and the use enumeration value needing to be associated is filled in the attribute field, so that the purpose association of the IP address pool and the IP address pool is realized.
3. The IP address allocation method according to claim 2, wherein: in step S2, the specific process of analyzing the usage corresponding to the IP address to be allocated and the number of the IP addresses required according to the field in the service request is as follows:
s21: according to the actual system service requirement, preparing records of service and IP address use and quantity in a system database;
s22: according to the service type in the service request, finding out the corresponding IP address use and the number of the IP addresses in a system database;
s23: and calculating corresponding masks according to the number of the IP addresses.
4. The IP address allocation method according to claim 3, wherein: in step S3, the specific process of searching for an IP address field is as follows:
s31: according to the IP address usage, inquiring an IP address pool corresponding to the usage;
s32: an IP address segment that can be used is looked up in the IP address pool.
5. The IP address allocation method according to claim 4, wherein: in step S4, the specific process of querying the idle subnet is as follows:
s41: judging whether the IP address field splits the subnet or not, if the subnet is not split, generating a subnet of the current IP address field, and if the subnet is split, acquiring all available subnets under the IP address field;
s42: filtering out the subnets of the target mask in the subnet set;
s43: it is determined whether there is a subnet of the target mask in step S42, and if so, the subnet is acquired.
6. The IP address allocation method according to claim 5, wherein: in step S43, if there is no subnet of the target mask, the following steps are performed:
s431: obtaining a corresponding mask according to the IP address field;
s432: traversing from a mask bit immediately preceding the target mask bit to a minimum mask bit;
s433: acquiring a detachable subnet record set corresponding to the mask bit, and traversing;
s434: deleting the current subnet, dividing the subnet into two parts, and generating two new subnets which are marked as subnet 1 and subnet 2;
s435: for the newly generated subnet, judging whether the subnet is a target mask bit, and adding the subnet into a target subnet set when the subnet meets the target mask bit; if the condition is not met, the subnet 1 is split preferentially, namely the steps S434-S435 are executed circularly, and if the IP address meeting the condition cannot be acquired or executed circularly, the same splitting operation as the subnet 1 is executed on the subnet 2; until the condition is met or the split is not possible.
7. The IP address allocation method according to claim 6, wherein: if the subnet marked as the occupied state in the step S5 does not need to be used, the use state in the subnet attribute is set to idle, and the subnet is put into the IP address pool for the next service.
8. An IP address allocation system, wherein the allocation method according to any one of claims 1 to 7 is used to allocate IP addresses according to service requests, and the method comprises:
the address pool planning module is used for establishing a corresponding IP address pool according to different purposes of the IP address field with the planned purpose before the service is opened, and establishing a relation between the purpose and the IP address pool, wherein the IP address field is stored in the corresponding IP address pool according to the purpose;
the application and mask analysis module is used for receiving the service request, analyzing the application corresponding to the IP address to be distributed and the required IP address number according to the field in the service request, and calculating the corresponding IP address mask according to the required IP address number;
an address segment searching module, configured to search, according to the IP address usage and the IP address mask in step S2, an IP address segment in the address pool corresponding to the usage;
an idle subnet inquiry module, configured to traverse the IP address fields in step S3, and sequentially inquire idle subnets;
an address marking module, configured to mark a subnet bit, a broadcast bit, and an available IP address of the IP address according to the idle subnet queried in step S4, and mark a state of the idle subnet queried in the database as an occupied state;
the central processing module is used for sending instructions to each module to complete related actions;
the address pool planning module, the application and mask analysis module, the address field searching module, the idle subnet inquiring module and the address marking module are all connected with the central processing module.
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| CN117473485A (en) * | 2023-12-28 | 2024-01-30 | 深圳万物安全科技有限公司 | Password detection method, password detection device, and computer-readable storage medium |
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Application publication date: 20210129 |