Real-time network element topology discovery method for IP (internet protocol) metropolitan area network

A technology of topology discovery and discovery method, applied in the field of metropolitan area network network communication, can solve the problems of untrustworthiness, roughness, low efficiency, etc., and achieve the effects of fast processing speed, high comparison accuracy, and avoidance of redundancy.

Inactive Publication Date: 2012-01-04
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the manual, rough, and untrustworthy maintenance of the network topology information of the existing operator's metropolitan area network, which cannot satisfy the accuracy of the network topology information brought about by the increasi

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  • Real-time network element topology discovery method for IP (internet protocol) metropolitan area network
  • Real-time network element topology discovery method for IP (internet protocol) metropolitan area network
  • Real-time network element topology discovery method for IP (internet protocol) metropolitan area network

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[0040] The technical scheme of the present invention will be further described in detail below in conjunction with the accompanying drawings:

[0041] Such as figure 1 As shown, the basic positions of various types of network elements in the metropolitan area network are shown, and the weight coefficients in Table 1 are graphically explained. The figure also indicates the existence of dual hanging, such as a BAS on one uplink port of a certain aggregation network element, and SR on the other uplink port. This situation is more common.

[0042]

[0043] Table 1 is the initial definition of network element weight coefficients based on the attributes of network elements in the metropolitan area network. During manual intervention, the weights of some network elements will be modified according to their actual differences in the network. The meta device will also refer to Table 1 to generate the initial weight coefficient.

[0044] In the topology discovery system, since the generalized...

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Abstract

The invention discloses a real-time network element topology discovery method for an IP (internet protocol) metropolitan area network. The method comprises the steps of topology discovery, topology information verification and real-time update based on a BAS/SR (Broadband Access Server/ Service Router) interface, wherein in the topology discovery step, the network element information can be acquired in a Telnet mode, then the network elements designated in a selected BSS (base station subsystem) are traversed, and the topology data are deduced from a leaf node to a root node; in the topology information verification step, the information of a real-time user dialing list is utilized, and the only way property for a user to penetrate through the network logic topology is adopted to verify the correctness of the topology information and provide credible network topology data; in the real-time update step, a multi-user concurrent thread is adopted to gain an MAC (media access control) address of an online user, and the topology data are deduced by taking the MAC address of the online user as a unique address; then the topology update can be carried out on the local network according to the accurate topology of hidden elements discovered in the combination of SLVAN and VLAN (virtual local area network); thus, the obtained topology data can be verified for the second time by the dialing list; and the information accuracy reliability can reach 100%.

Description

technical field [0001] The invention relates to a real-time discovery method for network element topology of an IP metropolitan area network, and belongs to the technical field of metropolitan area network network communication. Background technique [0002] With the rapid increase of operators' MAN users, the Layer 2 switch based on VLAN mode can only accommodate 1024 users in theory. Therefore, SVLAN based on QinQ mode is introduced in the MAN, and the theoretical users of the MAN Increased to 1024×1024. As a result, the number and types of different types of network switches from different equipment manufacturers and different time periods have rapidly expanded, and the current addition of EPON equipment and WLAN wireless APs has made the original relatively simple metropolitan area The network topology becomes more and more complex. The original manual activation maintenance mode makes the data and flag resources configured on the switch less and less, especially the a...

Claims

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Application Information

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IPC IPC(8): H04L12/28H04L12/24
Inventor 林晓勇糜正琨林泽王隽王发鹏
Owner NANJING UNIV OF POSTS & TELECOMM
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