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Method, apparatus and system for data transmission in double layer network

A data transmission, layer-2 network technology, applied in the field of communications, can solve the problems of long traffic interruption, inability to meet carrier-class requirements, and inability to forward service packets in time, so as to avoid traffic interruption.

Active Publication Date: 2011-04-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a method, device and system for data transmission in a Layer 2 network, which can prevent service messages from being forwarded in time due to port failures, resulting in excessively long traffic interruptions and failure to The problem of meeting carrier-grade requirements

Method used

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  • Method, apparatus and system for data transmission in double layer network
  • Method, apparatus and system for data transmission in double layer network
  • Method, apparatus and system for data transmission in double layer network

Examples

Experimental program
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Embodiment 1

[0033] see figure 2 , is a flow chart of the method provided in Embodiment 1 of the present invention, including:

[0034] S101: The service processing unit receives the data message.

[0035] S102: The service processing unit judges whether the data packet is a unicast packet, and if the judgment result is yes, execute S103; otherwise, execute S107.

[0036] S103: The service processing unit searches the MAC table according to the destination MAC address of the data packet, and obtains the local egress port information corresponding to the destination MAC address.

[0037] S104: The service processing unit searches the port status information table for state information corresponding to the local egress port according to the local egress port information corresponding to the destination MAC address, and obtains the local egress port status information corresponding to the destination MAC address.

[0038] S105: The service processing unit judges whether the local outgoing ...

Embodiment 2

[0046] Compared with Embodiment 1, the method for data transmission in a Layer 2 network according to Embodiment 2 of the present invention further includes the following steps: image 3 The following steps are shown:

[0047] S201: When the service processing unit learns that a failure occurs on the local egress port, it reports the failure message of the local egress port to the device management unit.

[0048] S202: The device management unit sends a message about the failure of the local egress port to the service control unit.

[0049] S203: The service control unit sends a message for updating the state information of the local outbound port to the service processing unit according to the received message of failure of the local outbound port, and the message for updating the state information of the local outbound port is used to notify service processing The unit updates the status information of the local egress port in the local port status information table, that is,...

Embodiment 2

[0053] Compared with Embodiment 2, the method for data transmission in the Layer 2 network described in Embodiment 3 of the present invention, after the service control unit receives the message of failure of the local outgoing port sent by the device management unit, further includes: Figure 4 The following steps are shown:

[0054] S301: The service control unit sends a message of deleting the MAC entry corresponding to the local egress port to the service processing unit according to the message of the failure of the local egress port.

[0055] S302: The service processing unit deletes the MAC entry corresponding to the failed local egress port according to the received message for deleting the MAC entry corresponding to the local egress port.

[0056] Through this embodiment, the MAC entry corresponding to the failed local egress port can be quickly deleted, so as to avoid introducing useless broadcast traffic into the network.

[0057] The flow chart of the method provi...

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PUM

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Abstract

The invention discloses a method which is used for transmitting two-layer network data, a device and a system thereof. The method of the invention comprises: a data message is received, if the data message is a unicast message, according to the objective MAC address of the data message, MAC table is searched, the local output port information which is corresponding to the objective MAC address isobtained; according to the local output port information, the status information which is corresponding to the local output port is searched in the port status information table, and the local outputstatus information which is corresponding to the objective MAC address is obtained; according to the local output port status information, whether the local output port is normal is judged, if the judgment result is that the local output port is normal, the local output port which is corresponding to the objective MAC address is adopted for transmitting the data message; otherwise, the data message is disposed by multicast / broadcast. By the method, the device and the system of the invention, the disposal of multicast / broadcast can be carried out when the port fails, and the problem of over long interruption time of the flow is avoided.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular to a method, device and system for two-layer network data transmission. Background technique [0002] In a Layer 2 network, in order to improve reliability, there is usually redundancy on the networking so that traffic can be switched to the backup link in the event of a failure. However, redundancy can easily cause loops, and loops can cause broadcast storms and traffic congestion. The emergence of STP (Spanning Tree Protocol, Spanning Tree Protocol) can activate redundant backup links to restore network connectivity when the current active path fails. STP determines the topology of the network by transmitting a special protocol message between switches. The message contains enough information to ensure that the switch completes the spanning tree calculation. This message can be divided into configuration BPDU (Bridge Protocol Data Unit, network Bridge Protocol ...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L12/24H04L45/16
Inventor 吕超群
Owner HUAWEI TECH CO LTD