結合 RMON/SNMP 的遠端網路管理

Abstract

隨著網路使用快速成長, 網路管理這個課題很快地變成資料通訊中最急切 需要投入的問題. 這篇論文內完成了一個在 TCP/IP 的網路上結合 RMON/SNMP 的遠端網路管理程式 (remote network manager). SNMP是一 個屬於應用層次的通訊協定, 做為網路管理的程式及資料收集行動者 (agent) 或網路監測器 (monitor) 間傳遞網路管理訊息. RMON (RFC-1271) 定義了一套 MIB 物件來收集網路區段內的有關資訊. 它定 義了網路監測功能及介面, 用來在以 SNMP 為基本架構的遠端網路管理程 式和網路監測器之間聯繫通訊. 這個遠端網路管理程式它是使用 Tcl/ Tk X-Window 程式發展語言設計, 包含了兩個主要功能: (1) 設置網路監 測器 (monitor) 的控制表格來設定 RMON 網路監測器的運作功能. (2) 處理由網路監測器收集而來的資訊, 並用圖形化的方式表示.這個遠端網 路管理程式依照 RMON MIB 的定義完成各種不同的特徵功能 , 對網路管 理者去監測網路區段很有大的幫助. Due to the exploding growth of the size and the usage of networks, network management is becoming one of the most pressing problems in data communications. In this paper, a remote network manager based on RMON/SNMP for TCP/IP-based network is implement- ed. SNMP is an application protocol that is typically used to convey network management information between a network manager and agents/monitors. RMON, RFC-1271, is a definition of MIB objects to collect information of managed network segments. It defines standard network- monitoring functions and interfaces for communicating between an SNMP-based managers and remote monitors. The manager is implemented using Tcl/Tk language, an X-Window application development language, to provide graphic presenta- tion of the status of network traffic. It includes two major functions: (1) to configure the RMON monitor by setting the monitor's control tables and (2) to process the management information collected from monitors and to present it graphi- cally. For each function, we implement various features according to the group definition of RMON MIB. The implemented manager is shown to be very helpful for a network administrator to monitor the network segments of interest.