Network physical topology discovering method and network management server based on SNMP

A technology of physical topology discovery and network management server, which is applied in the direction of data exchange network, digital transmission system, electrical components, etc., and can solve the problems of inaccurate network physical topology discovery and incomplete address forwarding table, etc.

Active Publication Date: 2010-06-30
RUIJIE NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] The present invention provides an SNMP-based network physical topology discovery method and a network management server, which ...

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  • Network physical topology discovering method and network management server based on SNMP
  • Network physical topology discovering method and network management server based on SNMP
  • Network physical topology discovering method and network management server based on SNMP

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Embodiment Construction

[0039] The SNMP-based network physical topology discovery method and system proposed by the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] Before introducing the specific implementation of the present invention, some conceptual definitions of network physical topology and lemmas used in network physical topology discovery are firstly introduced.

[0041] In switched Ethernet, network devices are divided into three categories: one is the switch, each switch maintains an address forwarding table, which can be read by SNMP; the other is the host, in which There is no address forwarding table on it, and it is usually connected to a certain port of the switch; there is also a hub, which has no MAC address and cannot be directly discovered in the network, and is an unmanageable transparent device. In the LAN topology, the router device is treated as a host.

[0042] If two device ports are directly connected...

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Abstract

The invention relates to the field of network topology discovery, in particular to a network physical topology discovering method and a network management server based on SNMP. The method comprises the following steps: obtaining IP addresses and corresponding MAC addresses of all devices in subnets in the network and gateway devices of the subnets; utilizing a telnet protocol to perform remote login to all the devices in the subnets, controlling each logged-in device to send an inquiry request message to all other devices in the subnet at which the device is located; utilizing the telnet protocol to read address forwarding tables which are established by logged-in exchangers based on the received inquiry response messages; and carrying out network physical topology discovery based on the address forwarding tables which are read from the exchangers in the subnets. The network management server utilizes the telnet protocol to complete the network physical topology discovery. The method and the network management server enable the exchangers in the network to establish relatively complete address forwarding tables, and compared with the results of a traditional network physical topology discovery, the results of the physical topology discovery have a great improvement.

Description

technical field [0001] The invention relates to the field of network topology discovery, in particular to an SNMP-based network physical topology discovery method and a network management server. Background technique [0002] The core of a switched Ethernet network is one or more interconnected Ethernet switches. Each switch can have multiple ports, and each port can be connected to a switch or terminal equipment, and can also be connected to a shared hub. Ethernet switches support devices on different ports to transmit data in parallel, thus greatly improving the transmission capacity of the LAN. 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, physical topology discovery is also called For layer 2 (link layer) topology discovery of the network. ...

Claims

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Application Information

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IPC IPC(8): H04L12/24
Inventor 陈小悦
Owner RUIJIE NETWORKS CO LTD
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