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Silent device detection method and device

A detection method and a technology of a detection device, which are applied in the field of communication, can solve problems such as issuing PermitVlan signs, not being able to perceive silent devices, and being unable to silently communicate with devices.

Active Publication Date: 2018-02-06
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if there is a host in the SDN network that never actively sends packets, that is, a silent device, the SDN controller cannot perceive the existence of the silent device, and cannot issue the Permit Vlan identifier to the corresponding access switching device. And Vlan and Vxlan mapping information, correspondingly, other hosts will not be able to communicate with the silent device

Method used

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  • Silent device detection method and device

Examples

Experimental program
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Embodiment 1

[0080] still see Figure 4 , is a schematic structural diagram of Embodiment 1 provided by the present invention. In Embodiment 1, the Layer 2 forwarding between VM1 and Sever2 on the same network segment is taken as an example:

[0081] When VS1 receives the data packet sent by VM1 through Port10, it obtains the destination MAC address of the data packet: Sever2-MAC, and checks whether there is Vxlan tunnel port information corresponding to Sever2-MAC in the pre-stored VSI entry. When VS1 communicates with Sever2 for the first time, the VSI entry of VS1 does not contain the Vxlan tunnel port information corresponding to Sever2-MAC. Therefore, VS1 can find the data packet in the Permit Vlan and Vxlan mapping information configured on Port10. The carried VlanID (that is, the third VlanID), such as Vlan10, after finding out that the VxlanID corresponding to Vlan10 is Vxlan100, according to the Vxlan100, the data message is carried out Vxlan-encapsulated and then sent out throug...

Embodiment 2

[0091] see Figure 5 , Figure 5 It is a schematic structural diagram of Embodiment 2 provided by the present invention. Figure 5 exist Figure 4 In addition to the core access switching device VS3, VS3 may be a gateway with a three-layer forwarding function. In Embodiment 2, the three-layer forwarding between VM1 and Sever3 on different network segments is taken as an example:

[0092] When VS1 receives the Layer 3 data packet sent by VM1 through Port10, it obtains the Vlan10 carried in the Layer 3 data packet, and searches the Permit Vlan and Vxlan mapping information configured on Port10 for the VxlanID corresponding to Vlan10 to be Vxlan, for example, Vxlan100, according to the Vxlan100, Vxlan-encapsulates the layer-3 data message and sends it to VS3 through the Vxlan tunnel established with the corresponding core access switching device VS3.

[0093] After VS3 receives the Vxlan-encapsulated layer-3 data packet, it performs Vxlan decapsulation processing on the layer-...

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Abstract

The present invention provides a silent device detection method and device. The method comprises: after an access switching device receives a first detection message sent by an SDN (Software Defined Network) controller, obtaining an exit interface list carried in the first detection message; sending out the first detection message through a corresponding exit interface according to the exit interface list; when a response message returned by the silent device according to the first detection message is received, sending the response message to the SDN controller; and receiving forwarding configuration information determined by the SDN controller according to a VlanID carried by the response message, and configuring an interface for receiving the response message on a device according to the forwarding configuration information. The silent device detection method and device can actively detect a silent device so as to ensure communication between each host in an SDN and a silent devicethrough an established Vxlan (Virtual Extensible Lan) tunnel.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a silent device detection method and device. Background technique [0002] SDN (Software Defined Network, Software Defined Network) is a new type of network architecture, which can separate the control plane and data plane of network equipment, the control plane function is realized by the SDN controller, and the data Each access switching device can be connected to several hosts, the hosts can be servers, and each server can run a virtual host or not run a virtual host. [0003] After the Vxlan (Virtual Extensible Lan, Virtual Extensible Local Area Network) tunnel is established between the access switching devices in the SDN network, the online host will actively send an ARP message with the VlanID to the access switching device, and the access switching device will The ARP message is sent to the SDN controller, so that after the SDN controller knows that the ho...

Claims

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Application Information

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IPC IPC(8): H04L12/46H04L12/947H04L45/42
CPCH04L12/4641H04L49/252H04L12/12Y02D30/50H04L41/0816H04L41/0895H04L41/12
Inventor 王伟锋
Owner NEW H3C TECH CO LTD
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