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Topology discovery method and device

A topology discovery and port technology, applied in the field of communication, can solve the problem of not supporting ring network topology discovery, etc.

Active Publication Date: 2013-10-09
HUAWEI TECH CO LTD
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  • Claims
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Problems solved by technology

[0004] However, under the above working mechanism, no matter whether it is the network device as the master node or the network device as the transmission node, it does not support the topology discovery of the ring network, and furthermore, it cannot perform accurate fault judgment on the network devices on the ring network. Operations such as blocking port designation

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  • Topology discovery method and device

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Embodiment Construction

[0025] Hereinafter, the implementation of the topology discovery method and device according to the embodiments of the present invention will be described in detail in conjunction with the accompanying drawings.

[0026] figure 2 It is a schematic flow chart of a topology discovery method according to an embodiment of the present invention. The method can be applied to a ring network such as an Ethernet ring or an RPR, and the ring network includes a first device and a first neighbor device adjacent to the first device. Such as figure 2 As shown, the topology discovery method includes:

[0027] Step 201: When it is determined that the neighbor negotiation of the first device is performed, a neighbor negotiation message is sent to the first neighbor device connected to the first port through the first port of the first device; the second port of the first neighbor device is connected to the first neighbor device said first port connection;

[0028] Step 202: Receive the ne...

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Abstract

The present invention discloses a method and an apparatus for topology discovery. Link state information of each port of each device on a ring network is confirmed through neighbor negotiation between a first device and a neighbor device, and by broadcasting a link state information base of each device to other devices on the ring network, each device on the ring network can obtain the newest and synchronous link state information of each port on the ring network, so that each network device on the ring network implements topology discovery of the ring network where the network device is located.

Description

technical field [0001] The invention relates to the communication field, in particular to a topology discovery method and device. Background technique [0002] Most metropolitan area networks and enterprise networks are constructed using ring networks. The technology adopted in the ring network is generally RPR (Resilient Packet Ring, Resilient Packet Ring) or Ethernet ring. RPR requires special hardware, so the cost is relatively high and its applications are few; the Ethernet ring is low in cost and widely used. [0003] A general ring network such as figure 1 As shown, it includes the master node and the transmission node, and the master node includes a master port and a backup port; it has the following working mechanism: the master port of the master node regularly sends out the protocol message, through the transmission on the ring network The node transmits to the backup port of the master node. When the backup port can receive the protocol message within a specifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/42H04L45/02
CPCH04L12/437H04L41/12H04L12/4637H04L45/02H04L45/03
Inventor 温华锋王文海覃力
Owner HUAWEI TECH CO LTD
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