Neighbor state detection method and neighbor state detection device in EVI (Ethernet Virtualization Interconnection) network

A technology of neighbor state and detection method, applied in the field of network communication, can solve the problem of inaccurate neighbor ED state and so on

Active Publication Date: 2014-04-23
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The present application provides a neighbor state detection method and device in an EVI network to solve the problem in the prior art that the state of the neighbor ED obtained through BFD linkage detection is inaccurate in some cases

Method used

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  • Neighbor state detection method and neighbor state detection device in EVI (Ethernet Virtualization Interconnection) network
  • Neighbor state detection method and neighbor state detection device in EVI (Ethernet Virtualization Interconnection) network
  • Neighbor state detection method and neighbor state detection device in EVI (Ethernet Virtualization Interconnection) network

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Embodiment 1

[0052] The BFD in the embodiments of the present application adopts a two-way detection mode in a control message manner. That is, both ends periodically send control messages to the opposite end respectively, and whether the link is faulty is detected by whether the control message sent from the opposite end is received within a predetermined time period.

[0053] The neighbor state detection method in the EVI network in the embodiment of the present application can be executed by any ED in the EVI network. For the convenience of description, the ED that executes the following method is called the local ED. Such as Figure 4 As shown, the method includes the following steps:

[0054] Step S102: For each neighbor ED in the same EVI instance, the local ED obtains relevant information about the EVI Link between the local ED and the neighbor ED, generates a BFD message, and encapsulates the BFD message into EVI message;

[0055] The related information includes: IP (Internet Protocol,...

Embodiment 2

[0106] With respect to the method in the first embodiment, an embodiment of the present application provides a neighbor state detection device in an EVI network, and the device is applied to an ED. Such as Picture 9 As shown, the device 20 includes the following modules: an EVI packaging module 201, a sending module 202, a starting module 203, a receiving module 204, and a status determining module 205, where:

[0107] The EVI encapsulation module 201 is used to obtain information about the EVI Link between the local ED and the neighbor ED for each neighbor ED in the same EVI instance, generate a BFD message, and encapsulate the BFD message according to the related information Into an EVI message; where the related information includes: the IP addresses of both ends of the EVI tunnel corresponding to the EVI Link;

[0108] The sending module 202 is configured to find the corresponding outgoing interface in the local routing and forwarding table according to the IP address of the ...

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Abstract

The application discloses a neighbor state detection method and a neighbor state detection device in an EVI (Ethernet Virtualization Interconnection) network, wherein the method includes the following steps: aimed at each neighboring ED (Edge Device) in an EVI instance, a local ED acquires the related information of the EVI Link between the local ED and the neighboring ED, generates a BFD (Bidirectional Forwarding Detection) message and encapsulates the BFD message into an EVI message according to the related information; the related information includes IP (Internet Protocol) addresses of both ends of an EVI channel corresponding to the EVI Link; according to the IP address of the EVI channel on the neighboring ED, the local ED finds out a corresponding outbound interface in a local routing and forwarding table, sends the EVI message via the found outbound interface and starts a timer at the same time; if an EVI message encapsulating a BFD message actively sent to the local ED by the neighboring ED is not received after the time of the timer is out, then the state of the neighboring ED is determined as a DOWN state. In the application, the state of the neighboring ED, which is detected by the way of BFD linkage, is accurate.

Description

Technical field [0001] This application relates to the field of network communication technology, and in particular to a method and device for detecting neighbor status in an EVI network. Background technique [0002] In order to achieve high reliability and redundancy deployment and provide better services, most enterprise networks and their data centers or service providers usually deploy multiple data centers in remote locations to achieve load sharing and high reliability, and implement virtual machines Free migration between data centers. Since the migration process of virtual machines is transparent to users and cannot change IP (Internet Protocol, Internet Protocol) addresses, Layer 2 network interconnection must be realized between data centers distributed in different places. The existing Layer 2 network interconnection technologies include: EVI (Ethernet Virtualization Interconnection) and VPLS (Virtual Private LAN Service). [0003] Among them, EVI technology is based ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/46
Inventor 苏平
Owner NEW H3C TECH CO LTD
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