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Hairpin switch implementation method and hairpin switch system based on openflow

An implementation method and switch technology, which can be used in transmission systems, digital transmission systems, data exchange networks, etc., and can solve problems such as unfavorable unified management of network management.

Active Publication Date: 2019-02-15
SUZHOU CENTEC COMM CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, to use VPLS to implement the Hairpin Switching function, the behavior needs to be modified, from multi-UNI / NNI to single-UNI, and the mac learning code needs to be turned off
[0006] In addition, the above two methods require the switch to support L2VPN, and it is a local behavior, which is not conducive to the unified management of the network management

Method used

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  • Hairpin switch implementation method and hairpin switch system based on openflow
  • Hairpin switch implementation method and hairpin switch system based on openflow
  • Hairpin switch implementation method and hairpin switch system based on openflow

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specific Embodiment

[0033] Introduce the working principle of the present invention below with a specific embodiment:

[0034] Such as image 3 As shown, it can be seen from the hairpin switching behavior defined by MEF, that is, this embodiment changes the S-tag of the message with the S-tag of 10 entering from the port portl to 20 through hairpin switching, and sends it back from the port portl .

[0035] In this embodiment, based on OpenFlow semantics, the message matching condition of the defined flow table is: IN_PORT=1, that is, the message enters from port1; dl_vlan=10, that is, the S-tag vlan id of the message is 10. The message execution action of the defined flow table is: set_field: 20->vlan_vid, that is, change the vlan id of the message to 20; ouput: IN_PORT, send the message back, that is, send it back from the portl that received the message. Among them, IN_PORT represents the reserved port defined by the OpenFlow Specification, which specifically refers to the port where the mes...

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Abstract

The present invention discloses a hairpin switch implementation method based on OpenFlow, comprising that the OpenFlow controller sends a flow table to the switch, the flow table sets message matching conditions and the execution actions of the matching message, and the message is sent from the switch When the port enters, it first matches the matching condition in the flow table. If it matches, the message is sent back from the original ingress port after changing the Vlan tag value of the message according to the corresponding execution action. The invention also discloses a hairpin switch system realized based on OpenFlow. The present invention implements the hairpin switching function defined by MEF based on OpenFlow, thereby realizing cross-OVC communication within an operator that is convenient for unified management.

Description

technical field [0001] The invention relates to a Hairpin switch technology, in particular to an OpenFlow-based hairpin switch implementation method and an OpenFlow-based hairpin switch system. Background technique [0002] The hairpin switching technology is the switching behavior of changing the VLAN ID in the S-tag of the specified ENNI Frame to another VLAN ID and sending it back to the ENNI (see MEF26.1 for details). ENNI refers to the interface between different operators. ENNI Frame is the Ethernet message passing through the ENNI interface. If it contains a VLAN tag (virtual local area network tag), then it is an S-Tag; if it contains two layers of VLAN tags, then the outer layer The S-tag is the inner C-tag. [0003] The scenario of Hairpin Switching can be realized by VPWS (User Network Interface UNI-User Network Interface UNI) or VPLS (UNI-UNI and mac-learning disable) in the industry. Both VPWS technology and VPLS technology belong to the MPLS L2VPN network, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/931H04L12/723H04L45/50
CPCH04L45/50H04L49/10
Inventor 刘敬一
Owner SUZHOU CENTEC COMM CO LTD
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