Transmission method and device for bidirectionally transceiving and detecting packet

A two-way sending and receiving detection and transmission method technology, applied in the field of communication, can solve problems such as increased data traffic between boards, special protocol processing line card occupation, BFD message occupation, etc., to reduce resource consumption and improve sending and receiving efficiency.

Active Publication Date: 2009-04-01
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Aiming at the problems that BFD packets cannot be sent and received in a timely manner due to the increase of inter-board data traffic caused by the transparent transmission of a large number of BFD packets, or the network fluctuates, a special protocol processing line card occupies a slot, and BFD packet processing occupies a large amount of NPU resources. And propose the present invention, for this reason, the present invention aims at providing a kind of transmission method and device of BFD message, in order to solve at least one of above-mentioned problems

Method used

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  • Transmission method and device for bidirectionally transceiving and detecting packet
  • Transmission method and device for bidirectionally transceiving and detecting packet
  • Transmission method and device for bidirectionally transceiving and detecting packet

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Embodiment Construction

[0032] Functional Overview

[0033] figure 2 It is a system structural block diagram for implementing the BFD message processing method of the embodiment of the present invention. Such as figure 2As shown, a protocol processing card is installed on the main control board, and the protocol processing card communicates with the CPU of the main control board and the switching chip; the processing of BFD packets is realized by setting the protocol processing card on the main control board, which can reduce one The transparent transmission of the text does not require a dedicated line card slot to process BFD packets, and does not require an NPU to participate in packet processing. Among them, the main device of the protocol processing card set on the main control board is a Field Programmable Gate Array (Field Programmable Gate Array, referred to as FPGA), which is responsible for sending and receiving BFD messages, and the FPGA communicates with the main control board CPU thr...

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Abstract

The invention discloses a transmission method used for bidirectional receiving / sending and detecting message and a device thereof, which is applied to a communication system which comprises a line card and a main control board; wherein, the method comprises the steps as follows: the main control board is provided with a protocol processing card; wherein, the protocol processing card is used for processing the bidirectional receiving / sending and detecting message; when the message of the line card is received, a switch chip of the main control board sends the message to the protocol processing card. The method and the device reduce the dissipation of the resource.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for transmitting bidirectional forwarding detection (Bidirectional Forwarding Detection, referred to as BFD) messages. Background technique [0002] BFD is an international standard protocol released by the Internet Engineering Task Force (IETF for short) to implement rapid detection, and the BFD protocol has nothing to do with media and protocols. Compared with other "HELLO" detection mechanisms, BFD provides a light-load, short-duration detection, which can provide a fast fault detection mechanism for the upper layer protocol and realize the bidirectional forwarding path between two adjacent routers or switches rapid fault detection. [0003] During the BFD process, the two systems periodically send detection packets on the channel of the established BFD session (session) between them. If a system does not receive the detection packet from the peer for a l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/56H04L12/24
Inventor 王振峰
Owner ZTE CORP
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