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Bidirectional forwarding detection (BFD) session creation method and BFD session system used for unidirectional path detection

A path detection and session establishment technology, which is applied in the transmission system, user identity/authority verification, electrical components, etc., can solve problems that cannot satisfy simple and flexible security at the same time, and achieve the effect of improving security

Active Publication Date: 2013-06-19
MAIPU COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is: to provide a BFD session establishment method and session system for unidirectional path detection, so as to solve the problem that the solution of using BFD to detect unidirectional paths in the traditional technology cannot meet the requirements of simplicity, flexibility, and multi-hop support at the same time. , high security issues

Method used

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  • Bidirectional forwarding detection (BFD) session creation method and BFD session system used for unidirectional path detection
  • Bidirectional forwarding detection (BFD) session creation method and BFD session system used for unidirectional path detection
  • Bidirectional forwarding detection (BFD) session creation method and BFD session system used for unidirectional path detection

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Embodiment 1

[0060] In this embodiment 1, the implementation process of the active end is as follows figure 2 As shown, including the following steps:

[0061] Step 201: Pre-configure the authentication type to Simple Password for the establishment of a BFD session for the unidirectional upper layer application protocol, and configure the Key ID and Password at the same time.

[0062] Step 202: Receive an instruction to establish a BFD session with a single upper layer application protocol, create a BFD session, and trigger the operation of the session state machine.

[0063] Step 203: Whether the session status is Down, if yes, go to step 204, otherwise go to step 205.

[0064] Step 204: According to the authentication type Simple Password configured on the local end, as well as the Key ID and the corresponding Password, construct a BFD control message with the A bit (Authentication Present) set to 1 and containing authentication information according to the existing standard and send it to the p...

Embodiment 2

[0079] In this embodiment 2, the implementation process of the active end is as follows Figure 5 As shown, including the following steps:

[0080] Step 501: Pre-configure the authentication type as Keyed MD5 for the establishment of a BFD session for a single upper layer application protocol, and configure the Key ID and Secret Key at the same time.

[0081] Step 502: After receiving an instruction to establish a BFD session from a single upper layer application protocol, the BFD session is established and the session state machine is triggered to run.

[0082] Step 503: Whether the session status is Down, if yes, go to step 504, otherwise go to step 505.

[0083] Step 504: According to the Keyed MD5 authentication type configured on the local end, as well as the Key ID and the corresponding Secret Key, construct a BFD control message with the A bit (Authentication Present) set to 1 and containing the authentication information according to the existing standard. To the passive end, ...

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Abstract

The invention relates to the bidirectional forwarding detection technology of the field of network communication equipment and discloses a bidirectional forwarding detection (BFD) session creation method used for unidirectional path detection. The BFD session creation method used for the unidirectional path detection aims to resolve the problem that a tradition technology can not simultaneously meet the demands of simpleness, flexibility, multihop supporting and high safety. The BFD session creation method used for the unidirectional path detection is characterized in that a drive end and a driven end confirm identification information of creating BFD sessions in advance, the drive end creates the BFD sessions and send BFD control messages containing corresponding information to the driven end after receiving an order of creating the BFD sessions of an unidirectional upper application protocol, the driven end receives the BFD control messages sent by the drive end and separates the messages to corresponding BFD sessions after successfully executing message validity detection, when the messages are separated, if the driven end judges that a corresponding BFD session does not exist and the BFD control message needs identifying, then the identification information preset by the drive end and the driven end is used for conducting identification, and after the identification is passed, the BFD sessions are created. Besides, the invention further discloses a BFD session system which is suitable for network communication.

Description

Technical field [0001] The present invention relates to a bidirectional forwarding detection (Bidirectional Forwarding Detection, BFD) technology in the field of network communication equipment, and in particular to a BFD session establishment method and a BFD session system for unidirectional path detection. Background technique [0002] BFD is a set of standardized lightweight detection protocols used to quickly detect and monitor the connectivity of paths or IP routing and forwarding in the network. It provides a general, standardized, medium-independent, and protocol-independent fault detection mechanism, which can provide unified, continuous and fast fault detection for upper-layer routing protocols, MPLS (Multiprotocol Label Switching, multi-protocol label switching), etc. ability. [0003] In many ways, BFD is similar to the simple Hello protocol used to detect neighbor failures in known routing protocols. Before BFD performs detection, a BFD session needs to be establishe...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L9/32
Inventor 秦川李永合徐海兵
Owner MAIPU COMM TECH CO LTD
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