CN114244761A - Automatic equipment discovery method and device based on IS-IS - Google Patents
Automatic equipment discovery method and device based on IS-IS Download PDFInfo
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Abstract
The invention discloses an automatic discovery method and device of equipment based on IS-IS, wherein the method comprises the following steps: loading router LSDB information and acquiring LSPID information of equipment nodes; acquiring IP information under an equipment node LSPID; acquiring the information of a route mask/32 bits under the LSPID of the equipment node; judging equipment address information needing to be managed by the equipment node according to the existence condition of the LSPIDIP in the IP information and the routing information; and repeating the steps until all the link information analysis is completed. The method and the device can accurately analyze the address information of the routing equipment in the autonomous domain through the LSDB base of the IS-IS protocol.
Description
Technical Field
The invention relates to the field of automatic discovery of networking equipment, in particular to an IS-based automatic discovery method and device for equipment.
Background
The traditional automatic discovery device discovers active devices through the PING network segment address, and if the device forbids PING, the device cannot be discovered greatly, so that the discovered device is lost.
The information of the equipment IS-IS LSDB IS exchanged among the routers through the routing information, so that the information synchronization in the autonomous domain IS achieved. Each router can know the information of the equipment and the link in the autonomous domain, and the equipment address discovery of the autonomous domain can be carried out through the LSDB information of one router.
Taking a link information of router device as an example, where the link information includes LSPID, i.e. link state protocol data unit identification information, IP information, link information, and routing information, as shown in table 1 below:
TABLE 1
Disclosure of Invention
Aiming at the situation, the invention provides an automatic discovery method and device of equipment based on IS-IS, which can accurately analyze the address information of the routing equipment in the autonomous domain through an LSDB (Link State database) of an IS-IS protocol.
In order to achieve the purpose, the invention adopts the following technical scheme:
in an embodiment of the present invention, an IS-based device auto-discovery method IS provided, including:
s01, loading LSDB information of the router and acquiring LSPID information of the equipment node;
s02, acquiring IP information under the LSPID of the equipment node;
s03, acquiring the information of a route/32-bit mask under the LSPID of the equipment node;
s04, judging the address information of the device which needs to be managed by the device node according to the existence condition of the LSPIDIP in the IP information and the routing information;
and S05, repeating the steps until all the link information analysis is completed.
Further, the LSPID format in S01 is aaaa.bbbb.cccc.xx-YY, where aaaa.bbbb.cccc is SYSTEMID information, XX is pseudo node ID information, and YY is fragmentation information.
Further, if the LSPIDIP exists in the IP information and also exists in the routing information in S04, the device address information of the device node is the LSPIDIP.
Further, if the LSPIDIP exists in the IP information and does not exist in the routing information in S04, the device address information of the device node is the LSPIDIP.
Further, in S04, if the LSPIDIP does not exist in the IP information and exists in the routing information, the device address information of the device node is the LSPIDIP.
Further, if LSPIDIP does not exist in the IP information in S04, and if LSPIDIP does not exist in the routing information, the LSPIDIP address is searched in the routing information according to the address in the IP information under the LSPID, the matched addresses are arranged according to the routing cost and then arranged according to the IP from small to large, and the first address is taken as the device address of the device node.
In an embodiment of the present invention, an IS-based device for automatically discovering devices IS further provided, where the device includes:
the LSPID information acquisition module loads LSDB information of the router and acquires LSPID information of equipment nodes;
acquiring an IP module and IP information under an equipment node LSPID;
acquiring mask module and acquiring the information of a route/32-bit mask under the LSPID of the equipment node;
the judging module is used for judging the equipment address information which needs to be managed by the equipment node according to the existence condition of the LSPIDIP in the IP information and the routing information;
and repeating the operation module and the steps until all the link information is analyzed.
Further, the LSPID format in the LSPID information acquisition module is AAAA.BBBB.CCCC.XX-YY, wherein AAAA.BBBB.CCCC is SYSTEM MID information, XX is pseudo node ID information, and YY is fragment information.
Further, if the LSPIDIP in the determination module exists in the IP information and also exists in the routing information, the device address information of the device node is the LSPIDIP.
Further, if the LSPIDIP in the determination module exists in the IP information and does not exist in the routing information, the device address information of the device node is the LSPIDIP.
Further, if the LSPIDIP in the determination module does not exist in the IP information and exists in the routing information, the device address information of the device node is the LSPIDIP.
Further, if the LSPIDIP in the determination module does not exist in the IP information and does not exist in the routing information, the LSPIDIP is searched in the routing information according to the address in the IP information under the LSPID, the matched addresses are arranged according to the routing cost and then arranged according to the IP from small to large, and the first address is taken as the device address of the device node.
In an embodiment of the present invention, a computer device IS further provided, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the computer program, the processor implements the aforementioned IS-IS based device auto-discovery method.
In an embodiment of the present invention, a computer-readable storage medium storing a computer program for executing the IS-IS based device auto-discovery method IS also presented.
Has the advantages that:
the invention can accurately analyze the address information of the routing equipment in the autonomous domain through the LSDB library of the IS-IS protocol.
Drawings
FIG. 1 IS a flowchart illustrating an IS-IS based device auto-discovery method according to an embodiment of the present invention;
fig. 2 IS a schematic structural diagram of an IS-based device auto-discovery apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
The principles and spirit of the present invention will be described below with reference to several exemplary embodiments, which should be understood to be presented only to enable those skilled in the art to better understand and implement the present invention, and not to limit the scope of the present invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As will be appreciated by one skilled in the art, embodiments of the present invention may be embodied as a system, apparatus, device, method, or computer program product. Accordingly, the present disclosure may be embodied in the form of: entirely hardware, entirely software (including firmware, resident software, micro-code, etc.), or a combination of hardware and software.
According to the embodiment of the invention, the invention provides an IS-based equipment automatic discovery method and device, and circuit information among equipment can be automatically discovered through equipment port information, IGP link information and circuit discovery rules.
The principles and spirit of the present invention are explained in detail below with reference to several representative embodiments of the invention.
Fig. 1 IS a flow chart of an IS-based device auto-discovery method according to an embodiment of the present invention. As shown in fig. 1, the method includes:
and S01, obtaining the LSPID information of the equipment node according to the LSPID information. The LSPID format is AAAA.BBBB.CCCC.XX-YY, wherein AAAA.BBBB.CCCC is SYSTEM ID information, XX is pseudo node ID information, and YY is fragment information. And taking LSPID information of the device node as XX-00. Processing according to SYSTEM MID to obtain LSPIDIP information, wherein the processing logic is to convert AAAA.BBBB.CCCC into AAA.ABB.BBC.CCC format, remove 0 in front of each segment, and convert into IP format.
For example 192.168.001.002
Here, each segment is labeled
192
168
001->1
002->2
The final result was 192.168.1.2
S02, acquiring IP information (IP information for short) under the device node LSPID, for example, the information of INTF ADDR, i.e. port address, in the LSDB is the IP information under the LSPID.
S03, obtaining the information of the route/32 bit mask (routing information for short) under the LSPID of the device node, for example, the information of the IP-Extended (address extension information) in the LSDB, and taking the route information of 255.255.255.255 in the third segment as the route information to be analyzed.
S04, according to the following priority, judging the device address information needing to be managed of the device node:
if the LSPIDIP exists in the IP information and also in the routing information, the device address information of the device node is the LSPIDIP.
If the LSPIDIP exists in the IP information and does not exist in the routing information, the equipment address information of the equipment node is the LSPIDIP.
If the LSPIDIP does not exist in the IP information and exists in the routing information, the equipment address information of the equipment node is the LSPIDIP.
If LSPIDIP does not exist in the IP information and does not exist in the routing information, searching in the routing information according to the address in the IP information under LSPID, arranging the matched addresses according to the routing cost and then arranging the matched addresses according to the IP from small to large, and taking the first address as the equipment address of the equipment node.
For example:
1.1.1.1 COST＝10
3.3.3.3 COST＝0
2.2.2.2 COST＝0
the sequence after arrangement is 2.2.2.2,3.3.3.3,1.1.1.1
Finally, 2.2.2.2
And S05, repeating the steps until all the link information analysis is completed.
It should be noted that although the operations of the method of the present invention have been described in the above embodiments and the accompanying drawings in a particular order, this does not require or imply that these operations must be performed in this particular order, or that all of the operations shown must be performed, to achieve the desired results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
For a clearer explanation of the automatic discovery method of the device based on IS-IS, a specific embodiment IS described below, however, it should be noted that the embodiment IS only for better explaining the present invention and IS not to be construed as an undue limitation to the present invention.
Example (b):
the discovery process is illustrated by the table above.
Take a link information in the device IS-IS LSDB information as an example.
1. According to the LSPID information, the information is the equipment node information, wherein the LSPID is 1720.1601.6001.00-00, and the corresponding LSPIDIP is 172.16.16.1.
2. Obtaining the IP information under the device node LSPID, and obtaining an IP list according to the format of INTF ADDR x.x.x.x, as shown in table 2 below:
TABLE 2
| IP information |
| 172.16.16.1 |
| 10.1.11.11 |
| 10.10.31.1 |
| 10.10.32.1 |
| 10.2.11.11 |
| 192.168.66.245 |
| 2.0.0.1 |
| 3.0.0.1 |
| 10.11.13.11 |
3. Obtaining the information of a 32-bit mask of a route under an LSPID of an equipment node, and obtaining a route list according to an IP-Extended x.x.x.x.255.255.255 COST: ZZ format, wherein the route list is shown in the following table 3:
TABLE 3
| Routing information |
| 172.16.16.1/32 |
4. According to the priority judgment, the hit conditions are as follows: LSPIDIP (172.16.16.1) is present in the IP information (172.16.16.1) and also in the routing information (172.16.16.1/32).
5. The device address of the current link information is 172.16.16.1.
Based on the same inventive concept, the invention also provides an automatic equipment discovery device based on the IS-IS. The implementation of the device can be referred to the implementation of the method, and repeated details are not repeated. The term "module," as used below, may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 2 IS a schematic structural diagram of an IS-based device auto-discovery apparatus according to an embodiment of the present invention. As shown in fig. 2, the apparatus includes:
the LSPID information obtaining module 110 loads the LSDB information of the router, and obtains the LSPID information of the device node;
acquiring an IP module 120 and IP information under an equipment node LSPID;
acquiring mask module 130, and acquiring information of a route/32-bit mask under the LSPID of the equipment node;
the judging module 140 judges the device address information to be managed by the device node according to the existence condition of the LSPIDIP in the IP information and the routing information;
and repeating the operation module 150 and the above steps until all the link information analysis is completed.
The LSPID format in the LSPID information obtaining module 110 is aaaa.bbbb.cccc.xx-YY, where aaaa.bbbb.cccc is SYSTEMID information, XX is pseudo node ID information, and YY is fragment information.
If the LSPIDIP in the determination module 140 exists in the IP information and also exists in the routing information, the device address information of the device node is the LSPIDIP.
If the LSPIDIP in the determination module 140 exists in the IP information and does not exist in the routing information, the device address information of the device node is the LSPIDIP.
If the LSPIDIP in the determining module 140 does not exist in the IP information and exists in the routing information, the device address information of the device node is LSPIDIP.
If the LSPIDIP in the determining module 140 does not exist in the IP information and does not exist in the routing information, the LSPIDIP is searched in the routing information according to the address in the IP information under the LSPID, the matched addresses are arranged according to the routing cost and then arranged according to the IP from small to large, and the first address is taken as the device address of the device node.
It should be noted that although several modules of the IS-IS based device auto-discovery apparatus are mentioned in the above detailed description, such partitioning IS merely exemplary and not mandatory. Indeed, the features and functionality of two or more of the modules described above may be embodied in one module according to embodiments of the invention. Conversely, the features and functions of one module described above may be further divided into embodiments by a plurality of modules.
Based on the aforementioned inventive concept, as shown in fig. 3, the present invention further provides a computer device 200, which includes a memory 210, a processor 220, and a computer program 230 stored on the memory 210 and operable on the processor 220, wherein the processor 220 implements the aforementioned IS-IS based device auto-discovery method when executing the computer program 230.
Based on the foregoing inventive concept, the present invention also provides a computer-readable storage medium storing a computer program for executing the foregoing IS-IS based device auto-discovery method.
The invention provides an IS-based equipment automatic discovery method and device, which can accurately analyze the address information of the routing equipment in the autonomous domain through the LSDB library of the IS-IS protocol.
The terms referred to above are to be interpreted as follows:
IGP (interior gateway protocol) protocol: is a protocol for exchanging routing information between gateways (hosts and routers) within an autonomous network. The routing information can be used in an Internet Protocol (IP) or other network protocol to specify how routing is to be performed. IGP protocols include RIP, OSPF, IS-IS, IGRP, EIGRP. At present, the operator networking commonly uses IS-IS and OSPF protocols.
IS-IS (Intermediate System-to-Intermediate System) routing Protocol was originally a dynamic routing Protocol designed by ISO (the International Organization for Standardization) for CLNP (Connection Less Network Protocol).
LSDB is the abbreviation of Link State DataBase, which refers to a Link State DataBase, and information synchronization can be achieved inside the autonomous system through the exchange of routing information among routers, namely the network topology synchronization described by the LSDB (Link State DataBase).
PING (packet Internet groper) is an Internet packet explorer, a program for testing network connection volume. Ping is a service command working in the application layer of the TCP/IP network architecture, and mainly sends an ICMP (Internet Control Message Protocol) Echo request Message to a specific destination host, and tests whether the destination station can reach and know the relevant status.
AS: an Autonomous system or domain (AS) refers to a combination of all IP networks and routers under the jurisdiction of one or more entities in the internet that implement a common routing policy for the internet.
While the spirit and principles of the invention have been described with reference to several particular embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, nor is the division of aspects, which is for convenience only as the features in such aspects may not be combined to benefit. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
The limitation of the protection scope of the present invention is understood by those skilled in the art, and various modifications or changes which can be made by those skilled in the art without inventive efforts based on the technical solution of the present invention are still within the protection scope of the present invention.
Claims (14)
1. An IS-IS based device auto-discovery method, the method comprising:
s01, loading LSDB information of the router and acquiring LSPID information of the equipment node;
s02, acquiring IP information under the LSPID of the equipment node;
s03, acquiring the information of a route/32-bit mask under the LSPID of the equipment node;
s04, judging the address information of the device which needs to be managed by the device node according to the existence condition of the LSPIDIP in the IP information and the routing information;
and S05, repeating the steps until all the link information analysis is completed.
2. The IS-IS based automatic device discovery method according to claim 1, wherein the LSPID format in S01 IS aaaa.bbbb.cccc.xx-YY, where aaaa.bbbb.cccc IS SYSTEMID information, XX IS pseudo node ID information, and YY IS fragmentation information.
3. The IS-IS based device auto-discovery method of claim 1, wherein LSPIDIP exists in the IP information and also exists in the routing information in S04, and the device address information of the device node IS LSPIDIP.
4. The IS-IS based device auto-discovery method of claim 1, wherein LSPIDIP exists in the IP information in S04, and does not exist in the routing information, then the device address information of the device node IS LSPIDIP.
5. The IS-IS based device auto-discovery method of claim 1, wherein LSPIDIP in S04 does not exist in IP information, and exists in routing information, then the device address information of the device node IS LSPIDIP.
6. The IS-based device auto-discovery method of claim 1, wherein the LSPIDIP in S04 does not exist in the IP information, and if the LSPIDIP does not exist in the routing information, the LSPIDIP address IS searched in the routing information according to the LSPIDIP address, the matched addresses are arranged according to the routing cost and then arranged according to the IP from small to large, and the first address IS taken as the device address of the device node.
7. An automatic discovery apparatus of an IS-IS based device, the apparatus comprising:
the LSPID information acquisition module loads LSDB information of the router and acquires LSPID information of equipment nodes;
acquiring an IP module and IP information under an equipment node LSPID;
acquiring mask module and acquiring the information of a route/32-bit mask under the LSPID of the equipment node;
the judging module is used for judging the equipment address information which needs to be managed by the equipment node according to the existence condition of the LSPIDIP in the IP information and the routing information;
and repeating the operation module and the steps until all the link information is analyzed.
8. The IS-IS based equipment automatic discovery device according to claim 7, wherein LSPID format in the LSPID information acquisition module IS AAAA.BBBB.CCCC.XX-YY, wherein AAAA.BBBB.CCCC IS SYSTEM MID information, XX IS pseudo node ID information, and YY IS fragment information.
9. The IS-IS based device auto-discovery apparatus of claim 7, wherein if the LSPIDIP in the determination module exists in the IP information and also exists in the routing information, the device address information of the device node IS LSPIDIP.
10. The IS-IS based device auto-discovery method of claim 1, wherein LSPIDIP exists in the IP information in the determination module, and does not exist in the routing information, then the device address information of the device node IS LSPIDIP.
11. The IS-IS based device auto-discovery apparatus of claim 7, wherein the LSPIDIP in the determination module does not exist in the IP information, and exists in the routing information, and the device address information of the device node IS the LSPIDIP.
12. The IS-based device auto-discovery apparatus according to claim 7, wherein the LSPIDIP in the determination module does not exist in the IP information, and does not exist in the routing information, the LSPIDIP IS searched in the routing information according to the address in the IP information under the lspidid, the matched addresses are arranged according to the routing cost and then arranged according to the IP from small to large, and the first address IS taken as the device address of the device node.
13. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1-4 when executing the computer program.
14. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for performing the method of any of claims 1-4.
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