Download [TOP] Prtg Traffic Grapher

With PRTG, system administrators can keep an eye on the health and performance of their network devices, traffic, applications, services, and much more, to make sure that their IT and business processes run smoothly at all times.

PRTG Traffic Grapher is an easy-to-use software for monitoring and classifying bandwidth traffic usage. It provides system administrators with live readings and long-term usage trends for their network devices. The most common usage is bandwidth management, but you can also monitor many other aspects of your network like memory and CPU utilizations. With PRTG Traffic Grapher you will receive bandwidth and network usage data that helps to optimize the efficiency of your network. Understanding bandwidth traffic and resource consumption is the key to better network management:

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4 SNMP Version 1, 2c and What is an SNMP Community String?...18 How PRTG works with SNMP...18 SNMP uses UDP...18 SNMP, MIBs, and OIDs an Overview...19 How to Choose A Method of Data Acquisition 20 Who should read this section...20 Available Methods of Data Acquisition...20 SNMP Monitoring...21 How SNMP Monitoring works...21 Reasons To Choose SNMP Monitoring...21 Packet Sniffing...22 How Packet Sniffing works...22 Reasons To Choose Packet Sniffing...22 NetFlow Monitoring...23 How NetFlow Monitoring works...23 Reasons To Choose NetFlow Monitoring...23 Latency Monitoring...23 How Latency Monitoring works...24 Reasons to Choose Latency Monitoring...24 Comparison of SNMP, Packet Sniffing, and NetFlow...24 How to Set Up Traffic Monitoring for Various Network Infrastructures...25 A0: Monitoring Network traffic for a single PC connected to the Internet via DSL, cable, or a modem...26 A2: Monitoring Total Network traffic with NetFlow...26 A3: Monitoring Total Network traffic using a switch with monitoring port...26 B1: Monitoring Network traffic of each PC (or connection) in a network using a switch/router with SNMP support...27 B2: Monitoring Network traffic for each PC (or connection) with NetFlow...27 B3: Monitoring Network traffic for each PC using a switch with monitoring port...27 C2: Monitoring network traffic by IP address or protocol with NetFlow...28 C3: Monitoring network traffic by IP address or protocol using a switch with monitoring port...28 D1: Monitoring Network traffic for a PC running PRTG using SNMP...29 D3: Monitoring Network traffic for a PC running PRTG using Packet Sniffing...29 E3: Monitoring Network traffic for a PC running PRTG using Packet Sniffing...29 F1: Monitoring total Network traffic of a shared Internet connection or leased line using a switch/router with SNMP support...29 G2: Monitoring network traffic by IP address or protocol of a shared Internet connection or leased line - Monitoring with NetFlow...30 G3: Monitoring network traffic by IP address or protocol of a shared Internet connection or leased line - Monitoring with Packet Sniffing...30 First Steps with PRTG Traffic Grapher 30 Basic Concepts: Understanding Views, Sensors, Graphs, Charts, Tables, and Tags...30 Views...30 Sensors...31 Graphs and Charts...32 Tables...33 Tags...34 Starting PRTG for the first time...35 Adding New Sensors using the Add Sensor Wizard...36 A First Look at The Main Window...40 iv Contents PRTG Traffic Grapher V6 User Manual

7 Graph Detail Data Summary and Billing Data Setting Program Options 119 User Interface Settings Reporting Settings Billing Settings How to Set up a Pricing Model Percentile Settings Web Server Settings Website Settings Web Server User Settings Web Server Group Settings System Settings Mail Server Settings Tweaks Settings High Compatibility Mode Advanced Port Name Schedules Settings Advanced Usage 133 Paessler SNMP Helper SNMP Helper License Options Fully Integrated Into Paessler's Monitoring Products SNMP Helper Freeware Edition SNMP Helper Pro Edition and its Extensions Installing Paessler SNMP Helper Working with Device Templates Accessing Logfiles Importing MIBs using Paessler MIB Importer and Converter Editing Filter Libraries Editing Channel Libraries Editing the Skin of the Web GUI Restoring Lost Sensor Settings From DAT files Importing Configuration Files from MRTG Appendix 142 Articles from the Paessler Knowledge Base How to set up traffic monitoring with PRTG for various infrastructures Configuration Tips for Cisco Routers and PRTG (NetFlow/SNMP) Netflow 5 Filter Parameters supported by PRTG Traffic Grapher Planning large installations of PRTG Traffic Grapher How PRTG Traffic Grapher stores its data Using live graphs from PRTG in other webpages using static image URLs How to find out OIDs for PRTG's custom SNMP sensors Upgrading from PRTG Version 3 to Version 5/ Why PRTG may stop recording data as soon as the Windows GUI is closed PRTG service is not started (Event ID 7000/Error 193 in system log) Automated License Key Installation for PRTG Traffic Grapher What do the values in the exported CSV log file say? Howto: Installing SNMP Service on Windows NT/2000/XP Howto: Installing SNMP on Linux Howto: Troubleshooting the device setup when using SNMP PRTG Traffic Grapher V6 User Manual Contents vii

10 What PRTG Traffic Grapher can do for you PRTG (Paessler Router Traffic Grapher) is an easy to use software that monitors bandwidth usage and many other network parameters via SNMP, Packet Sniffing, or Cisco NetFlow. It allows you to quickly and easily set up and run a monitoring station for networks. With just a few mouse clicks you can log the amount of data flowing through routers and leased lines, monitor CPU utilization, analyze the traffic by type, or check disk space usage. The most common usage is monitoring the bandwidth usage of leased lines, routers, and firewalls via SNMP, packet sniffing, or NetFlow. But you can also monitor many other aspects of servers, managed switches, printers, and other network components, as long as they are SNMP enabled. PRTG Traffic Grapher runs on a Windows machine in your network for 24 hours every day and constantly records the network usage parameters. The recorded data is stored in an internal database for later reference. Here are two sample graphs showing the usage of a 2 MBit/s leased line over various time periods: The recorded monitoring statistics can be viewed in the Windows GUI of PRTG Traffic Grapher. Also, all aspects of the configuration of the sensors is done using the Windows GUI. For remote access to the monitoring results PRTG Traffic Grapher comes with a built in web server for easy access to graphs and tables using a web browser. For data acquisition the three most common methods for bandwidth monitoring are supported: Using SNMP (Simple Network Management Protocol) to access traffic counters or other readings from SNMP enabled devices (most common) Looking at incoming/outgoing network packets that pass through a network card of a computer (so called packet sniffing ) 2 Monitoring Networks With PRTG Traffic Grapher PRTG Traffic Grapher V6 User Manual

11 Analyzing Cisco NetFlow packets send by Cisco routers Included with the installer is the tool Paessler SNMP Helper (Freeware Edition) which drastically eases accessing various system readings on Windows 2000/XP/2003 systems via SNMP which usually is very complicated. Optional Pro Editions of SNMP Helper are also available for Exchange, SQL, ISA, and Biztalk Server, see PRTG Traffic Grapher is available in both a Freeware edition (limited to monitoring up to three network devices and suitable for home users and SOHOs) and several commercial editions offering monitoring for multiple network devices and advanced features needed by companies. PRTG Traffic Grapher Feature List PRTG Traffic Grapher makes usage monitoring for computer networks easy. Here is a list of the most important features: Base Features Reliable network monitoring used by more than users every day Supports data acquisition via SNMP, packet sniffing, NetFlow protocol, or latency measurement Classifies network traffic by IP address, protocol and other parameters Works with most switches, routers, firewalls, and other network devices Easy installation with a few clicks on Windows 2000/XP/2003 Monitoring engine is capable of monitoring up to several thousand sensors A Freeware Edition is available for smaller networks Creates scheduled reports from the monitoring data Sends out alarms for failing or overloaded sensors Includes a built-in web server for remote access to the monitoring results Supported Data Acquisition Methods All common methods for network usage data acquisition are supported: SNMP: Simple Network Management Protocol is the basic method of gathering bandwidth and network usage data. It can be used to monitor bandwidth usage of routers and switches port-by-port as well as device readings like memory, CPU load etc. Packet Sniffing: The Packet Sniffer inspects all network data packets passing the PC's network card(s) and is able to classify network traffic by IP address, protocol and other parameters NetFlow: The NetFlow protocol is supported by most Cisco routers to measure bandwidth usage. Although being the most complex type to set PRTG Traffic Grapher V6 User Manual Monitoring Networks With PRTG Traffic Grapher 3

12 up it is also the most powerful method suitable for high traffic networks and can also classify network traffic by IP address, protocol and other parameters. Note: Only with Packet Sniffer and NetFlow based monitoring it is possible to measure the traffic by IP address, and/or protocol. SNMP based traffic measurement is port-based only. Additionally you can monitor latencies using PINGs, e.g. to monitor the jitter and packet loss of a data line. Windows and Web Based User Interface Monitoring data can be accessed via a Windows GUI and a web based front end Intuitive Windows user interface for data retrieval and configuration Integrated web server for remote access (no external web server necessary) Results are shown in various graphs and tables live data for last 5-60 minutes x minute average for up to 48h hourly averages for up to 60 days daily averages for up to 365 days Top Talkers, Top Protocols, Top Connections Events Graphs and tables are always generated on-the-fly for live reporting Monitoring Database Internal database system optimized for fast and efficient storage of historic data Optional export of monitoring results into CSV files for custom reporting Database offers optional zipped backup and purging of old data Internal Web Server Easy to use navigation allows to drill into the live monitoring results Fully "skinable" web interface using HTML templates (several default skins included) Web server supports public access (anyone can view the data) as well as authenticated access (username/password required) with multiple user account 4 Monitoring Networks With PRTG Traffic Grapher PRTG Traffic Grapher V6 User Manual ff782bc1db