The traffic monitoring approaches such as snmp , netflow have limitations ; while special devices such as smartbit are expensive Snmp 、 netflow等流量監(jiān)測(cè)方式存在很大局限性;而專用的流量監(jiān)測(cè)設(shè)備如smartbit等則價(jià)格昂貴。
This paper introduce and compare snmp agreement and cisco netflow technology on the network flux monitoring technology , and have realized the analysis and handling the data flow of wide area network using netflow technology 在網(wǎng)絡(luò)流量監(jiān)控技術(shù)上,本文介紹和對(duì)比了snmp協(xié)議和cisconetflow技術(shù),并利用netflow技術(shù)實(shí)現(xiàn)了廣域網(wǎng)數(shù)據(jù)流量的分析和處理。
There are many techniques based on netflow to analyse the traffic flow and provide accounting and billing information of the network service . it has been applied to monitor behavior of network user and traffic flow and usage of network services 目前netflow技術(shù)用于對(duì)ip網(wǎng)絡(luò)通信流量進(jìn)行分析和計(jì)量,為網(wǎng)絡(luò)的運(yùn)行提供準(zhǔn)確的統(tǒng)計(jì)數(shù)據(jù),在園區(qū)網(wǎng)用戶行為監(jiān)控、流量監(jiān)控、網(wǎng)絡(luò)服務(wù)使用狀況監(jiān)控等方面有很成熟的應(yīng)用。
Netflow is a technology which is used to accelerate data switch in network equipment by cisco system . it has a powerful data collection and analysis capability and is becoming the uppermost criterion for ip / mpls traffic flow . which is applied widely in network management field Netflow技術(shù)是思科公司用在網(wǎng)絡(luò)設(shè)備上進(jìn)行數(shù)據(jù)加速交換的一項(xiàng)技術(shù),它的數(shù)據(jù)采集和測(cè)量功能成為最主要的ip / mpls流量分析和計(jì)量標(biāo)準(zhǔn),廣泛應(yīng)用于網(wǎng)絡(luò)管理領(lǐng)域。
In the first part of the article , i enumerated several solutions to email filter , and analyzied their advantage " and disadvantage . then email ' s characteristic has been presented in the paper . at last , i main introduced the copied netflow and the filtered netflow 文章第一部分主要是介紹了郵件過濾方面,幾種主要的解決方案,并且分析了每種解決方案的優(yōu)點(diǎn)和缺點(diǎn)。然后從郵件的基本特點(diǎn)出發(fā),介紹了郵件傳輸過程、延遲交付、文電格式等相關(guān)的技術(shù)。
NetFlow is a network protocol developed by Cisco Systems for collecting IP traffic information. NetFlow has become an industry standard for traffic monitoring and is supported on various platforms, see NetFlow support below.