CN201805435U

CN201805435U - Redundancy hot backup adaptive network card

Info

Publication number: CN201805435U
Application number: CN2010205575553U
Authority: CN
Inventors: 吴宇
Original assignee: Jiangsu Jiecheng Vehicle Electronic Information Engineering Coltd
Current assignee: Jiangsu Jiecheng Vehicle Electronic Information Engineering Coltd
Priority date: 2010-10-12
Filing date: 2010-10-12
Publication date: 2011-04-20
Anticipated expiration: 2020-10-12

Abstract

The utility model discloses a redundancy hot backup adaptive network card. The utility model aims to provide a redundancy hot backup adaptive network card, which overcomes the defect of communication failure because a single physical link of the current network card can be disconnected easily. The network card of the utility model is characterized by comprising a compact peripheral component interconnect (CPCI) plug, a peripheral component interconnect (PCI) bus to PCI bus converting controller, a network controller, a PCI bus to local bus converting controller and a complex programmable logic device, wherein one end of the PCI bus to PCI bus converting controller is connected with the CPCI plug, and the other end is respectively connected with the network controller and the complex programmable logic device; and the complex programmable logic device is respectively communicated with the network controller and the PCI bus to local bus converting controller. The utility model is mainly used as the redundancy hot backup adaptive network card of a computer.

Description

A kind of redundancy backup adaptive net card

Technical field

The utility model relates to a kind of network interface card,, relate in particular to a kind of redundancy backup adaptive net card.

Background technology

At present, existing network interface card all provides single physical link.When transmission range was far away, various environmental factors may cause the disconnection of this single one physical link, interrupted thereby cause network service.Transmitting crucial significant data information if network is current, network service is interrupted bringing unpredictable consequence.

Summary of the invention

The purpose of this utility model is to provide a kind of redundancy backup adaptive net card, causes the defective of communication failure to overcome easy disconnection of existing network interface card single physical link.

For achieving the above object, technical solution of the present utility model is: a kind of redundancy backup adaptive net card, it is characterized in that: it comprises CPCI plug 1, pci bus is changeed pci bus controller 2, network controller 3,3 ', pci bus is changeed local bus controller 4 and CPLD 5, the end that described pci bus is changeed pci bus controller 2 links to each other with the CPCI plug, the other end respectively with network controller 3,3 ', CPLD 5 links to each other, and CPLD 5 respectively with

network controller

3,3 ' and 4 connections of pci bus commentaries on classics local bus controller.

The beneficial effects of the utility model are: existing network interface card single physical link disconnects easily and causes the defective of communication failure, the utility model provides a kind of redundancy backup adaptive net card, this network interface card provides the physical link of two-way redundancy backup, when one of them physical link broke down or disconnects, can be real-time switch to continued communication on another physical link.The more important thing is that this redundancy network interface card can fundamentally guarantee the safety of network service, can not cause the interruption of network service because of environmental factor.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Among the figure: 1---the CPCI plug, 2---pci bus is changeed pci bus controller, 3,3 '---network controller, 4---pci bus is changeed the local bus controller, and 5---CPLD.

Embodiment

Below in conjunction with accompanying drawing the utility model and embodiment thereof are described in further detail.

Referring to accompanying drawing, of the present utility model being characterised in that: it comprise CPCI plug 1, pci bus change pci bus controller 2, network controller 3,3 ', pci bus changes local bus controller 4 and CPLD 5, the end that described pci bus is changeed pci bus controller 2 links to each other with the CPCI plug, the other end respectively with network controller 3,3 ', CPLD 5 links to each other, and CPLD 5 respectively with network controller 3,3 ' and pci bus change local bus controller 4 and be communicated with.

CPCI plug 1 is connected on the pci bus, and pci bus is changeed pci bus controller 21 tunnel pci bus groove position is extended to 3 tunnel pci bus slots, be connected respectively to network controller 3,3 ' and pci bus change on the local bus controller 4.CPLD 5 changes local bus controller 4 by local bus and pci bus and is connected.Network controller 3,3 ' status signal be connected on the CPLD 5.During the network interface card operate as normal, network controller 3 or 3 ' change pci bus controller 2 by pci bus to communicate with CPCI plug 1 and host computer.When the network physical link failure occurring, CPLD 5 can real-time monitor network controller 3,3 ' status signal, and this status signal is successively changeed local bus controller 4, pci bus commentaries on classics pci bus controller 2 and CPCI plug 1 by pci bus notify host computer, host computer is finished the network switch operating according to this status signal.

Claims

1. redundancy backup adaptive net card, it is characterized in that: it comprises CPCI plug (1), pci bus is changeed pci bus controller (2), network controller (3,3 '), pci bus is changeed local bus controller (4) and CPLD (5), the end that described pci bus is changeed pci bus controller (2) links to each other with the CPCI plug, the other end respectively with network controller (3,3 '), CPLD (5) links to each other, and CPLD (5) respectively with network controller (3,3 ') and pci bus commentaries on classics local bus controller (4) connection.