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  • 學位論文

無線接取設備切換模式之研究

Switch Model for the Variant Access Point

指導教授 : 呂克明
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摘要


隨著數位無線通訊的發展,近年來有許多無線網路設備被發展出來,而這些相關技術與網路設備漸漸地被普遍採用來架構區域網路,因此無線方式的傳輸資料品質也就相對的更加重要。無線區域網路有兩種通訊模式,為Infrastructure Mode和Ad-hoc Mode,而這兩種模式都需要透過無線接取設備(Access Point,AP)來接收或是傳送資料。 當AP發生連線中斷時,會適時作出反應,以啟動切換模式,讓網路連線服務不受中斷。在傳統架構下,如果在單一AP的涵蓋範圍下,AP若故障或者連結中斷,則使用者的網路服務便中斷,對於許多企業而言,這或許會造成莫大的損失,因此這情況是不容發生的。在原有的AP1服務範圍內安裝另一台AP2,保持這台AP2的運作。而AP1及AP2皆為不同廠牌,但都具有SNMP的特性。AP2會假裝成Client存在於AP1的服務範圍內。當AP1發生錯誤而無法正常提供網路服務時,AP2能夠透過切換模式自動取代掉原有的AP1,並繼續提供網路連線服務,讓網路服務不受到中斷。所以開發出切換模式,使其確保AP服務不中斷。進而提高AP的連線品質。

並列摘要


Among the links of the modern local area network (LAN), the single failure of the Access Point (AP) is a great loss to many enterprises. This study is to provide a redundant link of variant AP within the range. The environment of this thesis is to install the second AP2 within the existing AP1 service range, and to keep the AP2 standing by through the experiment. Both AP1 and AP2 could be two different factory cards providing a feature of Simple Network Management Protocol (SNMP). The AP2 will be assigned as a Client coexists in the service range of the AP1. When the failed AP1 could not provide a normal network service, the AP2 can replace it automatically through a switch mechanism. Then the AP2 continue offering the network line service and let the network service not cut off.

並列關鍵字

Access Point SNMP switch LAN

參考文獻


柯光隆(2002),「以SNMP為基礎之資訊安全品質保證管理架構」,私立中原大學資訊工程學系碩士學位論文。
劉川綱(2002),「終端網路量測系統一個創新的終端系統量測架構」,國立成功大學電機工程學系碩士學位論文。
Boo-Sun Jeon; Eun-Jin Ko; Gil-Haeng Lee, (2003)“Network management system for wireless LAN service”, 10th International Conference On Telecommunications, pp. 948- 953 vol.2
Case J., M. Fedor, M. Schoffstall, C. Davin , (1990)“A Simple Network Management Protocol (SNMP)”, RFC 1157
C. S. Chao, D. L. Yang, and A. C. Liu, (2001) “An Automated Fault Diagnosis System Using Hierarchical Reasoning and Alarm Correlation,” Journal of Network and Systems Management, Vol. 9, No. 2, pp.183-202.

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