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A mspg-based ethernet frame forwarding method and its mspg system

A forwarding method and Ethernet technology, applied in the field of Ethernet frame forwarding, can solve problems affecting LAN performance and other issues

Active Publication Date: 2021-06-25
JIYANG COLLEGE OF ZHEJIANG A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Broadcasting in the network seriously affects the performance of the LAN

Method used

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  • A mspg-based ethernet frame forwarding method and its mspg system
  • A mspg-based ethernet frame forwarding method and its mspg system
  • A mspg-based ethernet frame forwarding method and its mspg system

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Embodiment Construction

[0055] Referring to the accompanying drawings in the description, the preferred embodiments of the present invention will be further elaborated.

[0056] The SDN network is mainly composed of controllers and switches. For switches, there are generally two working modes, one is the active mode proactive, and the other is the passive mode reactive. In the proactive mode, the switch can automatically process the forwarding of the data link layer frame through the preset flow table without the intervention of the controller; while in the reactive mode, the switch cannot automatically process the forwarding of the data link layer frame. It is necessary to interact with the controller, that is, to send packetin packets to the controller, and the controller will guide the completion by issuing flow tables and other operations.

[0057] For an SDN network, its topology will contain many switches, and each switch may work in proactive mode or in reactive mode. Therefore, when t...

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Abstract

The invention relates to an MSPG-based Ethernet frame forwarding method and its MSPG system, including a controller and a switch. 1. The switch receives a frame and has a matching flow table, and acts according to the flow table; 2. If the flow table does not match, send packetin to the control 3. After receiving the packetin, update the Dpip- <mac:inport>Mapping table; 4 Search according to the dst_MAC field in the frame; the dpid of the switch is x, and the dpid corresponding to x <mac:inport>Search in the mapping table; 5 find the forwarding flow table, if not, execute packetout, and the switch performs flooding. The invention adopts a multi-table search and path generation algorithm to reduce the flooding caused by MAC missing in the switch and reduce the broadcast load of the local area network.< / mac:inport>

Description

technical field [0001] The invention relates to the field of computer technology, in particular to an Ethernet frame forwarding method based on multi-table lookup and path generation in a software-defined network. Background technique [0002] In the local area network, various analysis and discovery protocols (such as ARP, NDP, DHCP) will use the same local area network technology, that is, broadcast technology. Because in a specific local area network, a single node does not have the relevant knowledge of other nodes in the network, so it is necessary to broadcast the message to all nodes when performing address resolution, duplicate address detection and target discovery of the target node, so Can generate a lot of network load. Broadcasting is inseparable from network devices. All broadcasts require the support of network devices, and network devices themselves also generate a large number of broadcasts, such as the MAC learning process of switches. [0003] by figure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/721H04L12/741H04L45/74
CPCH04L45/32H04L45/745
Inventor 宋广佳陈滨安仲立
Owner JIYANG COLLEGE OF ZHEJIANG A & F UNIV
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