KR102471892B1 - Apparatus and method for registration of routing information - Google Patents

Abstract

The present invention relates to an apparatus and method for registering routing information. An apparatus for registering routing information according to the present invention includes a receiving unit receiving routing setting information from an external router; an IP setting error judgment unit that compares IP information included in the routing setting information received from the receiving unit with IP information included in pre-registered registration information to determine whether or not an IP setting error occurs; a verification unit that, when an IP setting error occurs as a result of the determination of the IP setting error determining unit, connects to the external router where the IP setting error occurred and then reconfirms and verifies routing setting information; As a result of the decision of the IP setting error determining unit, if an IP setting error does not occur, the routing information received from the external router is registered/updated, and if the IP setting error is reconfirmed as a result of verification by the verifying unit, the routing information received from the external router is registered. It is characterized in that it includes a routing setting information processor that suspends or drops registration/renewal of information.

Description

Apparatus and method for registering routing information {APPARATUS AND METHOD FOR REGISTRATION OF ROUTING INFORMATION}

The present invention relates to an apparatus and method for registering routing information, and more particularly, to an apparatus and method for registering information received from an external router after self-determining whether or not there is an error.

A router is a device that extracts the destination of a packet, designates an optimal path to that destination, and forwards data packets to the next device along this path. It may be configured alone or included in a router. It may be configured in a form.

In this case, since the optimal path is generally the path that enables communication the fastest, this may be the shortest distance, but even a circular path may be a path that is transmitted through a high-speed transmission line.

In other words, a router acts as a relay between different networks, corresponds to a device included in the network layer in the 7th layer of OSI, and provides routes to packets that need to pass between logically or physically separated networks. It is a device that takes the role of sending packets to other networks after finding the best path it knows.

In this way, a router must manage routing configuration information that is a criterion for determining a route for a specific IP or specific IP band in order to process a route for other packets.

For a smooth and rapid communication connection, such routing setting information must immediately reflect the latest state even if the network configuration is changed. To this end, each router must periodically check routing setting information of other routers.

In order to keep the routing configuration information up-to-date, conventionally, each router periodically communicates with a specific routing configuration device or other routers in the vicinity to exchange and reflect the latest routing configuration information with each other.

1 shows an example of such a prior art, in which a predetermined routing setting information collection database 12 periodically communicates with each router 11 to collect and transmit routing setting information, and a predetermined error detection server 13 The IP setting error is detected by comparing the routing setting information stored in the routing setting information collection database 12 with each other.

However, in this conventional method, since routing information is collected at predetermined time intervals, real-time routing error monitoring is not possible, and since all routers must periodically store all access and routing information, as the number of routers increases, inquiry and storage become more difficult. There is a problem that the equipment scale or time is increased, and the accuracy of the overall routing error measurement is lowered even when one or two routers fail to look up.

Patent Publication No. 10-2006-0024591

The present invention has been made to solve the above conventional problems, and its object is to provide an apparatus and method for updating routing setting information of each router in real time and accurately updating routing setting information for each situation. is to provide

In order to achieve the above object, an apparatus for registering routing information according to the present invention includes a receiver configured to receive routing setting information from an external router; an IP setting error judgment unit that compares IP information included in the routing setting information received from the receiving unit with IP information included in pre-registered registration information to determine whether or not an IP setting error occurs; a verification unit that, when an IP setting error occurs as a result of the determination of the IP setting error determining unit, connects to the external router where the IP setting error occurred and then reconfirms and verifies routing setting information; As a result of the decision of the IP setting error determining unit, if an IP setting error does not occur, the routing information received from the external router is registered/updated, and if the IP setting error is reconfirmed as a result of verification by the verifying unit, the routing information received from the external router is registered. It is configured to include a routing setting information processor that suspends or drops registration/renewal of information.

In addition, in order to achieve the above object, a control method of a routing information registration apparatus according to the present invention includes the steps of receiving routing setting information from an external router; comparing the IP information included in the routing setting information received in the above step with the IP information included in the pre-registered registration information to determine whether or not there is an IP setting error; If an IP setting error occurs as a result of the determination in the above step, verifying routing setting information after accessing the external router where the IP setting error occurred; As a result of the determination in the above step, if an IP setting error does not occur, the routing information received from the external router is registered/updated, and if an IP setting error occurs as a result of the verification in the above step, the routing information received from the external router is registered/updated. This includes suspending or dropping the update.

As described above, according to the present invention, routing setting information of routers can be reflected and registered/updated in real time.

In addition, by determining and processing whether or not tasks for routers are in progress, it is possible to minimize cases in which incorrect routing configuration information is registered or proper routing configuration information is dropped.

1 is an example of a system in which routing configuration information of a conventional router is processed;
2 is a schematic configuration diagram of an entire system including a routing information registration device according to an embodiment of the present invention;
3 is a functional block diagram of the routing information registration device of FIG. 2;
4 and 5 are control flowcharts of an apparatus for registering routing information according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, each embodiment according to the present invention is only one example to aid understanding of the present invention, and the present invention is not limited to these embodiments. In particular, the present invention may be composed of at least one or more combinations of individual components, individual functions, or individual steps included in each embodiment.

In particular, although alphabets such as '(a)' are included in some claims of the claims for convenience, these alphabets do not prescribe the order of each step.

In addition, each signal referred to in each embodiment according to the present invention may refer to one signal transmitted through a single connection or the like, but may also refer to a group of signals transmitted for the purpose of performing a specific function described later. . That is, in each embodiment, a plurality of signals transmitted at predetermined time intervals or transmitted after receiving a response signal from the counterpart device may be expressed as one signal name for convenience.

A schematic configuration of the entire communication system including the routing information registration device 100 according to an embodiment of the present invention is as shown in FIG. 2 .

As shown in the figure, the entire communication system may include a routing information registration device 100, external routers 201 and 202, and a work procedure document server 300.

The external routers 201 and 202 perform a function of transmitting set routing setting information, and in particular, may transmit routing setting information whenever a preset event occurs.

For example, the external routers 201 and 202 may transmit routing setting information when the previously set routing setting information is changed according to a request from a manager or based on information collected from the outside.

At this time, the external routers 201 and 202 may transmit such routing setting information according to a Border Gateway Protocol (BGP) or Open Shortest Path First (OSPF) protocol.

Here, the routing setting information corresponds to IP-related information (i.e., information related to the IP of the target device) required to determine a path through which each external router (201, 202) manages or transmits packets, and is provided in the middle of the packet path. Since it is only a well-known technique for a router to have such routing configuration information and to transmit the routing configuration information to the outside, a detailed description thereof will be omitted.

When the work procedure server 300 performs a task for changing the device configuration on the network, such as replacing the aforementioned external routers 201 and 202 or changing routing setting information stored in each external router 201 and 202 It is a server that manages these work details.

For example, a network operator can access the work procedure server 300 and register work details. At this time, the work details may include information about external routers 201 and 202 that are work targets or information about an IP band to be changed. .

On the other hand, the routing information registration device 100 receives the routing setting information transmitted by the external routers 201 and 202 and processes it through a predetermined verification process, and integrates the routing setting information of each external router 201 and 202. Although it may be a device for managing, in this embodiment, it is assumed that the routing information registration device 100 is a router that processes packet routes like the external routers 201 and 202 .

An example of a specific functional block of the routing information registration device 100 is as shown in FIG. 3 .

As shown in the same figure, the routing information registration device 100 according to an embodiment of the present invention includes a receiving unit 110, an IP setting error determining unit 120, a verifying unit 130, and a routing setting information processing unit 140. , It may be configured to include a work details confirmation unit 150, storage unit 160.

First of all, the storage unit 160 stores information, data, and applications necessary for the operation of the routing information registration device 100, and furthermore, information generated during the operation of the routing information registration device 100 or received from the outside, Performs the function of additionally registering or updating data.

As described above, the receiving unit 110 performs a function of receiving routing setting information transmitted by each of the external routers 201 and 202 .

As described above, the receiving unit 110 may receive routing setting information according to a Border Gateway Protocol (BGP) or Open Shortest Path First (OSPF) protocol.

The IP setting error determining unit 120 compares IP information included in the routing setting information received from the receiving unit 110 with IP information included in pre-registered registration information to determine whether or not an IP setting error occurs.

For example, the IP setting error determination unit 120 determines the IP band of the first router in which the IP band of the routing configuration information received from the second router is already registered in a state in which a specific IP band is matched and registered with the first router. It can be compared with , to check whether they overlap or collide with each other, and if they overlap or collide with each other, it can be determined that an IP setting error has occurred.

Here, an IP setting error may be a duplicate IP address as described above, or may correspond to a case where the IP mask management range is different or the managed IP block information is deleted. A description will be given focusing on the case of a collision.

When an IP setting error occurs as a result of the determination of the IP setting error determination unit 120, the verification unit 130 connects to the external routers 201 and 202 where the IP setting error occurred, and then rechecks and verifies the routing setting information. carry out

That is, in the case of the above example, the verification unit 130 can log in directly to the second router and check routing setting information set in the second router through a network command.

The function of this verification unit 130 does not depend only on the routing configuration information received according to BGP/OSPF, but directly connects to the corresponding external router 201, 202 to the router in which an IP configuration error has been detected to obtain the configured routing configuration information. By checking again, it is possible to minimize the case where incorrect routing setting information is registered or correct routing setting information is not registered.

On the other hand, if the IP setting error occurs as a result of the determination of the IP setting error determination unit 120, the work history check unit 150 communicates with the preset work procedure server 300 to check the work history, and corresponds to the work history It performs a function of checking whether information on external routers 201 and 202 in which an IP setting error has occurred is included.

For example, in the case of the above example, the work history check unit 150 may access the work procedure server 300 and check whether the work history for the second router is registered. At this time, the job details include information about the time when the job is performed as well as information about the external routers 201 and 202 of the work target, so that the work history check unit 150 determines whether the work is in progress based on the current time. Alternatively, the job history includes job start information and job end information so that the job history check unit 150 can determine whether the current job is in progress.

The routing setting information processing unit 140 registers/updates the routing information received from the external routers 201 and 202 when an IP setting error does not occur as a result of the determination of the IP setting error determination unit 120, and the verification unit ( As a result of the verification in step 130), if an IP setting error is confirmed again, a function of postponing or dropping the registration/renewal of routing information received from the external routers 201 and 202 is performed.

For example, the routing setting information processing unit 140 determines the IP band of the routing setting information received from the second external router 202 in a state where the IP band for the first external router 201 is registered as in the above example. When there is no overlap/collision with the previously registered IP band of the first external router 201, routing setting information received from the second external router 202 may be registered.

As another example, when the IP setting error is reconfirmed even in the verification result of the verification unit 130 (ie, the first external router 201 in which the IP band of the routing configuration information received from the second external router 202 is pre-registered) In case of overlap/collision with the IP band of ), the routing information received from the second external router 202 may be dropped without being registered, or the registration may be temporarily suspended.

Of course, when it is determined that the IP setting error has been resolved as a result of the verification by the verification unit 130, the routing setting information processing unit 140 registers the routing setting information of the external routers 201 and 202 confirmed by the verification unit 130. / can be updated.

That is, it is determined that an IP setting error has occurred, and as a result of checking by connecting the verification unit 130 to the second external router 202, the IP band of the second external router 202 is the number of the registered first external router 201. When it is determined that there is no overlap/collision with the IP band, routing setting information of the second external router 202 is registered or updated.

In addition, as described above, when a task is currently in progress for the external routers 201 and 202 in which an IP setting error has occurred by the task history check unit 150, the routing setting information processing unit 140 determines the work history check unit 150 After temporarily storing the routing setting information received from the external routers (201, 202) whose work history is confirmed in , it is determined whether or not the IP setting error is resolved for a preset time, and as a result of the determination, if the IP setting error is resolved, the related Routing configuration information can be registered/updated.

For example, when the IP band of the routing setting information received from the second external router 202 collides with the previously registered IP band of the first external router 201, the task history check unit 150 determines the first external router ( 201) and the second external router 202 are in progress, the routing setting information processing unit 140 temporarily stores and standbys the currently received routing setting information of the second external router 202, and Another routing setting information is received from the first external router 201 during standby, and as a result of determination, the IP band of the newly received routing setting information of the first external router 201 and the temporarily stored routing configuration of the second external router 202 If the IP bands of the information do not overlap or collide with each other, the temporarily stored routing setting information of the second external router 202 as well as the additionally received routing setting information of the first external router 201 can be registered/updated. It can.

Hereinafter, with reference to FIGS. 4 and 5 , a control process in which the routing information registration device 100 according to an embodiment of the present invention determines whether an IP setting error has occurred and performs processing accordingly will be described.

First, it will be described with reference to FIG. 4 .

When receiving new routing setting information from the external routers 201 and 202 (step S1), the routing information registration device 100 registers some or all of the IP block values included in the routing setting information of the external routers 201 and 202. A search is performed to see if there is pre-registered routing setting information identical to that of (step S3).

As a result of the search, if some or all of the IP block values included in the routing configuration information of the external routers 201 and 202 do not have the same routing configuration information (step S5), the routing information registration device 100 determines the received routing information. Additional setting information is registered (step S11).

As a result of the search, if routing setting information identical to all or part of the IP block value included in the routing setting information of the external routers 201 and 202 exists (step S5), the routing information registration device 100 displays the new routing setting information It is determined whether or not the external routers 201 and 202 in the routing setting information already registered are identical to each other (step S7).

As a result of the determination, if the external routers 201 and 202 are the same, the routing information registration device 100 updates the newly received routing configuration information (step S11).

If, as a result of the determination, the external routers 201 and 202 are not the same, the routing information registration device 100 determines that there is an IP setting error (step S9) and performs a process for this.

For example, a notification message can be sent to the administrator, and the IP setting error situation can be re-verified or automatically processed.

5 shows a specific process of re-verifying and processing when it is determined that an IP setting error has occurred.

In the description of the present embodiment, in a state in which routing setting information of the first external router 201 is previously stored, new routing setting information is received from the second external router 202, and as a result of determining, the first external router 201 As an example, a situation in which a collision occurs between an IP band of routing configuration information of ) and an IP band of routing configuration information of the second external router 202 is assumed.

The routing information registration device 100 makes a log-in connection to the first external router 201 and the second external router 202 in which the IP collision occurred (step S21), and performs routing of the respective external routers 201 and 202. Rechecking and verifying the setting information is performed (step S23).

As a result of the verification, when it is confirmed that the IP collision does not occur or is resolved (step S25), the routing information registration device 100 determines the routing configuration information of the first external router 201 and the second external router 202. Routing configuration information is registered or updated (step S39).

As a result of the verification, when the IP collision is confirmed again, the routing information registration device 100 requests the work procedure server 300 to check the work details (step S27).

As a result of the check, if the first external router 201 and the second external router 202 are not in operation (step S29), the routing information registration device 100 warns the manager (step S31) so that the administrator can know about the IP setting error. let it be

As another example, as a result of the check, if the first external router 201 or the second external router 202 is working (step S29), the routing information registration device 100 operates for a preset time (for example, the work included in the work history). Until the end time), the routing setting information drop process/registration process is suspended (step S33).

As a result of rechecking/verifying the routing setting information during the grace period (step S35), if an IP conflict continues to occur (step S37), a warning is issued to the manager (step S31), and if the IP conflict is resolved (step S37), the resolution Routing configuration information is registered/updated (step S39).

In this way, by temporarily suspending and continuously checking the registration/drop processing of routing setting information through confirmation of work history, there is an advantage in that the modification of routing setting information can be reflected immediately after completion, and the external router (201, 201, By temporarily storing and managing the routing setting information of 202) without drop processing, there is no need to receive the same routing setting information later.

Meanwhile, it goes without saying that the process of performing each of the above-described embodiments may be performed by a program or application stored in a predetermined recording medium (for example, computer-readable). Here, the recording medium includes all of an electronic recording medium such as RAM (Random Access Memory), a magnetic recording medium such as a hard disk, an optical recording medium such as a CD (Compact Disk), and the like.

At this time, the program stored in the recording medium may be executed on hardware such as a computer or smart phone to perform each of the above-described embodiments. In particular, at least one of the functional blocks of the routing information registration device according to the present invention described above may be implemented by such a program or application.

In addition, the present invention is not limited to the specific embodiment described above, but can be implemented by various modifications and variations within the scope of the present invention. It will be apparent that such variations and modifications are included in the present invention provided they fall within the scope of the appended claims.

100: routing information registration device 201, 202: external router
300: work procedure server 110: receiver
120: IP setting error determination unit 130: verification unit
140: Routing setting information processing unit 150: Work details confirmation unit
160: storage unit

Claims (10)

a receiver for receiving routing setting information from an external router;
an IP setting error judgment unit that compares IP information included in the routing setting information received from the receiving unit with IP information included in pre-registered registration information to determine whether or not an IP setting error occurs;
If an IP setting error occurs as a result of the determination of the IP setting error determining unit, the work history is checked by communicating with a preset work procedure server, and whether the work history includes information on the external router where the IP setting error occurred a work detail check unit to check;
When an IP setting error does not occur as a result of the determination by the IP setting error determination unit, the routing information received from the external router is registered/updated, and the routing setting information processing unit determines the operation details in the operation details checking unit. After temporarily storing the routing setting information received from the routing setting information processing unit for determining whether or not the IP setting error is resolved for a predetermined time, and registering/updating the related routing setting information when the IP setting error is resolved as a result of the determination Routing information registration device characterized in that it comprises. According to claim 1,
Routing setting information received from the external router is information that the external router transmits according to the BGP / OSPF protocol whenever a preset event occurs. delete delete (a) receiving routing configuration information from an external router;
(b) comparing IP information included in the routing setting information received in step (a) with IP information included in pre-registered registration information to determine whether or not there is an IP setting error;
(c) If an IP setting error occurs as a result of the determination in step (b), the work history is checked by communicating with a preset work procedure server, and the work history includes information on the external router where the IP setting error occurred checking whether there is;
(d) If an IP setting error does not occur as a result of the determination in step (b), the routing information received from the external router is registered/updated, and the operation details received from the external router are confirmed in step (c) After temporarily storing the routing setting information, determining whether or not the IP setting error is resolved for a predetermined time, and registering/updating the related routing setting information when the IP setting error is resolved as a result of the determination. Control method of routing information registration device. According to claim 5,
The routing setting information received from the external router is information that the external router transmits according to the BGP / OSPF protocol whenever a preset event occurs. delete delete A computer-readable recording medium recording a program for executing the method of claim 5 or 6. An application program stored in a computer readable recording medium in order to execute the method of claim 5 or claim 6 in combination with hardware.

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