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A method and system for implementing active-active in an openflow switch

A switch and active-active technology, applied in the transmission system, digital transmission system, data exchange network, etc., can solve the problems of difficult interconnection, inconvenient programming control, and inability to communicate with other manufacturers, so as to achieve the effect of effective bandwidth utilization

Active Publication Date: 2020-11-27
SUZHOU CENTEC COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing MLAG network protocols are all proprietary and cannot communicate with other manufacturers.
[0006] That is to say, if active-active communication needs to be implemented between existing hosts on the same network segment, the switch device must support active-active features like MLAG. Traditional network is difficult to achieve unified control, inconvenient programming control

Method used

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  • A method and system for implementing active-active in an openflow switch
  • A method and system for implementing active-active in an openflow switch
  • A method and system for implementing active-active in an openflow switch

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Embodiment Construction

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0035] An openflow switch disclosed by the present invention realizes active-active method, which uses the unified standard group table and flow table defined by OpenFlow Spec to realize active-active communication between hosts on the same network segment, effectively utilizes bandwidth, and has switch level and link level of failsafe. In addition, group table update after host replacement is also supported.

[0036] to combine Figure 2 ~ Figure 4 As shown, a method for realizing active-active of an openflow switch disclosed by the embodiment of the present invention includes the following steps:

[0037] S1, the controller records the port connection information of N hosts on the same network segment and at least two switches respectively into a connection information table, and ...

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PUM

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Abstract

The invention discloses a method for realizing active-active of an openflow switch, comprising: a controller records the connection information of N hosts in the same network segment and the port connection information of at least two switches respectively into a connection information table, and sends the information up and down each switch N group tables; hosts perform ARP interaction, the controller obtains the MAC address of each host from the ARP message, and updates the MAC address to the connection information table, and at the same time, the controller sends 2N to each switch The entry is used to match the flow table of the message sent to each host; when the hosts communicate, the switch receives the message sent from the source host, and matches the delivered flow table, and executes according to the behavior configured in the flow table , forward the packet to the destination host. The invention utilizes the unified standard group table and flow table defined by OpenFlow Spec to realize active-active communication between hosts in the same network segment, effectively utilize bandwidth, and have switch-level and link-level failure protection.

Description

technical field [0001] The invention relates to a technology for realizing dual-active communication between hosts, in particular to a method for realizing dual-active by an openflow switch. Background technique [0002] All member ports of traditional link aggregation (Link Aggregate) can only be on one device. MLAG (Multichassis Link Aggregation Group, cross-device link aggregation) removes this limitation, and can realize the Lag (Link Aggregation Group, link aggregation) function across switches. [0003] Such as figure 1 As shown, a TCP (Transmission Control Protocol, Transmission Control Protocol) connection is established between the two switches through a Peer-link (peer-to-peer link) to exchange MLAG information and synchronize FDB (Forwarding Data Base, MAC address forwarding table) information. [0004] When the message cannot be forwarded on the current switch due to a failure (such as member portdown of the MLAG group), the data will be sent to the Peer-Switch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/709H04L12/741H04L29/12H04L45/243H04L45/74
CPCH04L45/245H04L45/74H04L61/103
Inventor 刘敬一杨锐金利
Owner SUZHOU CENTEC COMM CO LTD