Method for obtaining physical layer link network topology based on address forwarding mechanism

Abstract

The invention relates to a method for obtaining physical layer link network topology based on an address forwarding mechanism. The physical layer link network topology is obtained through the following steps of: acquiring arp information of inter-layer equipment, filtering and organizing the information, and then matching port information of the network equipment in the information with address forwarding table information one to one according to physical address to form a corresponding relation and thereby building two layers of network topology; acquiring relevant information forwarded by adata frame of the equipment, and filtering the equipment information; discarding redundant and unsatisfactory information, thus reducing data processing quantity during generation of the link in later period, and increasing processing efficiency; generating an equipment link; performing relevance logical calculation of the equipment link on the acquired equipment information based on mac according to physical layer communication, thus finishing building of actual connection situation between the equipment and finishing primary building of the link set; and performing association analysis on the address forwarding table of the equipment and a port information table of the equipment.

Description

1. Technical field [0001] The invention relates to a method for obtaining network topology of physical layer links. 2. Background technology [0002] Switched Ethernet is an Ethernet technology developed from a Category 5 twisted pair or optical fiber junction box. The core of its network is one or more interconnected Ethernet switches (Ethernet switch). Each switch can have multiple ports, and each port can be connected to a switch or terminal device, and can also be connected to a shared hub. Ethernet switches support devices on different ports to transmit data in parallel, which greatly improves the local area network. transmission capability. Switched Ethernet is one of the main networking methods of local area networks at present. The goal of its physical topology discovery is to determine the various devices in the network and the link connection relationship between the physical ports of these devices. Therefore, the physical Topology discovery is also called layer 2...

AI Technical Summary

Problems solved by technology

[0009] Due to the lack of a unified standard and the huge span of equipment access time, different design and maintenance engineers have more or less differences in the naming methods of port descriptions, which will inevitably lead to the ambiguity of the device interconnection maintained according to the port description.

[0010] 2) The update of device interconnection information is relatively lagging behind

[0011] Due to the continuous increase in the number of access users, network expansion is inevitable. A certain number of new devices will be connected to each expansion. The task of network cutover is heavy, the time is tight, and the update of device interconnection information is often not timely.

[0012] 3) Different types of equipment from different manufacturers require different engineers to maintain

[0013] The number of devices below the aggregation layer is huge, of various types, and the operation commands are complex. If you want to maintain the interconnection information of the devices, you must have an engineer who is familiar with the devices of a certain manufacturer, resulting in a lot of manpower input.

[0014] 4) The interconnection information lacks relatively complete information, and it is difficult to display it intuitively in the form of a topology map

[0015] Due to the large number of devices, many local networks do not have complete textual information on the network topology, so it is difficult to display the network architecture intuitively in the form of topology diagrams, and it is impossible to associate various real-time parameters and fault information of the devices with the devices. , Fault location and tracking can only be obtained by experts who are familiar with the equipment to view the port information of the equipment, and cannot be obtained intuitively by ordinary maintenance personnel