Knowledge Base

PRTG Traffic Grapher Version History (V4-6)

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Upgrade to Version 7 Today

Our new product PRTG Network Monitor Version 7 is the successor product for PRTG Traffic Grapher 6.

We have integrated the functionality of PRTG 6 with the features of IPCheck Server Monitor into PRTG Network Monitor. The upgrade is free for customers with an active maintenance plan (please download the new installer in our updates center).

Version History for PRTG Traffic Grapher Version 4-6

July 11th 2008 - Version 6.2.1.957/958

  • New: Freeware Edition now supports 10 sensors for free

April 15th 2008 - Version 6.2.1.950/951

  • New: Support for Windows 2008 Server (Note: Packet sniffing is not yet supported for the Win 2008 platform)
  • Bugfix: Fixed a small memory leak in the save-toplists-to-file function

January 14th 2008 - Version 6.2.0.907/908

  • Some small orthographic corrections
  • New: "equal" and "different" options for threshold notifications
  • New: Enhanced SNMP Performance - The SNMP engine was heavily optimized. It can now query more SNMP values in less time and with less network load. Especially for installations with some hundred sensors or more (and for installations with small intervals, e.g. below 10 seconds) this new version will show less CPU load and less network load while showing better performance.
  • New: Created three new HTML template files (sensordata1.htm, sensordata2.htm, sensordata3.htm). These templates can be edited by the user e.g. to enable external applications to access the status of a sensor or the current value of a sensor using a HTTP request.

August 1st 2007 - Version 6.1.1.854/855

  • New: Extended multi-edit functionality, including notifications and groups
  • New: robots.txt file in the webserver (to prevent indexing)
  • New: French version
  • New: Menu "Extras -> Memory Usage"
  • Changed: Improved memory management for toplists to prevent "out of memory errors" even if enough memory is available
  • Changed: Sensors created from templates inherit sensor intervals from template instead of wizard
  • Changed: Improved event log entries
  • Changed: Limit when deleting sensors removed
  • Bugfix: Context menu for custom graphs showed "Show %s averages"
  • Bugfix: In the netflow sensor edit dialog the misplaced "Aggregation Channel" page was removed
  • Bugfix: Default schedules are not created every time the program starts (duplicate schedules are automatically removed)
  • Bugfix: Fixed "Index out of range" error when deleting the last Toplist
  • Bugfix: No more peaks when adding/removing channels from aggregation sensor
  • Bugfix: Cancel button did not work when adding error notifications
  • Bugfix: Better handling of corrupted config files (eventlog entry and application exit)
  • Bugfix: Uninstall did not work properly if service was not installed
  • Bugfix: Sensors stayed red ("error") when application was exited/restarted during error state
  • Bugfix: Red error notification icon only for sensors belonging to the logged in user
  • Bugfix: MRTG import did not set the SNMP version to V1
  • Bugfix: File selector for report templates added quotation marks to the filename
  • Bugfix: New packet.log file to debug lost packet sniffer settings
  • Bugfix: Multiple tag selection
  • Bugfix: Aggregation sensors in reports
  • Bugfix: Default error notifications in the Automatic Network Discovery
  • Bugfix: Saving the delay value of the compatibility options

April 25th 2007 - Version 6.1.0.756/757

  • Bugfix: All Error Notifications did display as "Up"

April 24th 2007 - Version 6.1.0.753/754

  • Bugfix: Several spelling errors fixed
  • Bugfix: Some small fixes

April 17th 2007 - Version 6.1.0.750/751

  • Bugfix: Broken images in webserver with access control and custom panel with empty name
  • Bugfix: Error when selecting aggregation sensors if no sensors are available
  • Bugfix: "Save Report to File" did not enable the folder selection

February 28th 2007 - Version 6.1.0.683 BETA

  • New: Added German GUI interface and manual
  • New: Added WLAN sniffing using AirPCap USB Dongles
  • New: Updated Packet Capture engine

February 27th 2007 - Version 6.0.6.675/676

  • New: Feature "Save raw toplist data"
    • Writes a CSV file with all network traffic information used to create Toplists
    • Can be used for further analysis of the traffic with external programs
    • Creates one CSV file with data per toplist interval
    • Can be enabled on each Toplist's settings page
    • Use with caution, this process can potentially create huge files
  • Bugfix: Fixed SNMP sensors with negative values
  • Bugfix: On Microsoft Vista some controls disappeared when the ALT key was pressed and visual themes were enabled
  • Bugfix: Optimized cache file writing (speeds up GUI/service change)
  • Bugfix: minor startup timing problem in netflow/packet sniffer sensors

February 13th 2007 - Version 6.0.6.625/626

  • Bugfix: Traffic sensors created from templates displayed wrong values (saved raw data was ok)
  • Bugfix: Purge function used years instead of days, no data was deleted
  • Bugfix: View menu disappeared after adding a page in the custom view

January 30th 2007 - Version 6.0.6.601/602

  • New: Added "Dell Storage Management.oidlib" and "Dell Systems Management Instrumentation.oidlib"
  • Bugfix: In some instances, reports with day averages could be generated without data

January 24th 2007 - Version 6.0.6.585/586

  • New: New sensor type "Aggregation sensors" that can add up data from other sensors (see the blogfor details)
  • New: The historic data cache can now be calculated in the background while the application is fully useable
  • New: The historic data cache is now automatically saved every 1-2 days to prevent a full recalculation after a crash
  • New: Volume notifications are not send again after a restart
  • New: Notifications can now contain the name of the notification
  • New: Fix for devices incorrectly encoding 32bit snmp values
  • New: Reports now use the "mailtemplate_report.txt" from the mailtemplates folder
  • New: Updates to support the new V1.1 of the MIB Importer
  • Changed: Maximum number of busy sensors set to 300 (from 100 in PRTG 6 and no limit in PRTG 5)
  • Bugfix: background notifications were not set back to white after error
  • Bugfix: Volume notifications could use wrong values in the first notification after start or after editing the sensor
  • Bugfix: Reports with a reporting period set to "month" spanning a year change did not work
  • Bugfix: Erroneous display of start / end days in the report list for reports with a reporting period set to "month"
  • Bugfix: Packet Sniffer and Netflow sensors could cause a very long startup if PRTG was not running for some time

November 20th 2006 - Version 6.0.5.450/451

  • New: The default color set for the line colors of the graphs can be edited (Menu: View -> Change Colors & Layout)
  • New: The "Background Notifications" are now shown in the sensor list
  • Bugfix: For non-traffic sensors the spike filter sometimes worked correctly only in the live graph

November 15th 2006 - Version 6.0.5.441/442

  • New: All groups of the sensorlist can optionally be collapsed by default in the web interface for faster loading of the homepage, especially for installations with many sensors (see Website settings)
  • Bugfix: Some malformed URLs could crash the webserver
  • Bugfix: Selecting schedules for volume and speed notifications did not always work
  • Bugfix: Fixed problems in the table display of custom panel views in the webserver

November 9th 2006 - Version 6.0.5.416/417

  • New: Support for Microsoft Vista (experimental)
  • New: Number of concurrently active sensors is limited more agressively to avoid memory overloads
  • New: For emails the URL for the website used in links of notification emails can be set in the website options
  • Bugfix: 64bit counters are set to 32bit mode when SNMP version for a sensor is changed from V2 to V1
  • Bugfix: Group link in notification mail did not work
  • Bugfix: "Display mode" links removed from custom view in webserver
  • Bugfix: Toplists not shrinked to limit (bug was introduced in 6.0.4.393/394)
  • Bugfix: Percentile calculation of the sum channel could be incorrect in some rare cases

November 2nd 2006 - Version 6.0.4.393/394

  • New: "Save to HTML" for toplists (can be enabled in toplist settings) saves toplists into a folder for later reference
  • New: If a user accesses a URL on PRTG's webserver with an expired login cookie or without a cookie he is asked for the login and then redirected to the page he wanted to access
  • Changed: Webserver now has a larger connection queue and supports HTTP/1.1 Keep Alive
  • Bugfix: Broken tables in reports when billing was activated in the report but one or more sensors had not billing settings
  • Bugfix: Unresolveable DNS names used in filters rules of Packet Sniffer or NetFlow sensors could slow down system performance
  • Bugfix: Fixed a virtual memory leak reported by a few users

October 5th 2006 - Version 6.0.4.335/336

  • Bugfix: Memory leak caused by wrong access rights to the events.txt file

October 2nd 2006 - Version 6.0.4.332/333

  • Changed: more decimal digits available for the scale value in custom sensors
  • Bugfix: in multiple graph display the graph's "detail" button did not show the data of the correct sensor (double click und right click on the graph worked ok, though)
  • Bugfix: Data cache for netflow sensors did not work correctly which caused a data loss up to the "active flow timeout" value when starting/stopping the GUI
  • Bugfix: In some situations the percentile calculation in the reports did not work correctly
  • Bugfix: Watchdog installation was only offered for XP SP2 systems
  • Bugfix: on some systems changing the view could create an error message

September 26th 2006 - Version 6.0.3.284/285

  • New: Updated "Basic Linux" OID library
  • Bugfix: "Hide tags in web interface" option did not work for alphabetical taglist

September 22nd 2006 - Version 6.0.3.261/262

  • Bugfix: Sometimes daily reports were created at the wrong time of day

September 21st 2006 - Version 6.0.3.258/259

  • Bugfix: When scheduled reports are enabled and if several reports had different time period settings then some reports could be created for an incorrect date

September 14th 2006 - Version 6.0.2.255/256 - NEW MAJOR VERSION

  • New Features
    • Tags: Sensors can be associated with "tags" (keywords) and the sensorlist can be filtered based on these tags. Makes working with a large number of sensors much easier
    • Device Templates: A group of SNMP sensors can be saved into a device template which can then be used to create the same set of sensors for another device.
    • Events: Keeps tracks of events for all sensors (e.g. all error messages or notifications)
    • Schedules: Sensors and notifications can be paused based on day-of-week and hour-of-day
    • Latency Sensor: This new sensor type uses PINGs to monitor the network latency of a device or a data line. This can be used to find overloaded network devices which usually show high variations of latency readings
    • Background color of a sensor's graph changes to a light red if the sensor shows an error
  • Improved Features
    • Updated design of the Windows GUI makes it easier to use
    • Full redesign of the Web GUI adds a lot of new functionality and three brand new skins
    • Improved reporting engine with many new features and new export formats
    • Packet Sniffer now supports 64bit operating systems
    • Includes its own packet sniffer technology to improve compatibility (does not require installation and does not create conflicts with other sniffer software)
    • The (optional) new watchdog service starts the PRTG service whenever it was stopped unintentionally
    • And many smaller enhancements

August 10th 2006 - Version 5.3.0.862/863

  • Bugfix: Fixed a sporadic problem with the uninstaller that did not fully remove the PRTG service

June 14th 2006 - Version 5.3.0.833/834

  • New: Added a new "text only" web interface template (Skin 6)
  • Bugfix: In some cases packet sniffer tables showed a coverage of more than 100% after a restart of PRTG (only the display is incorrect, the recorded data is correct; a "recalculate data cache" fixes the display for older data)
  • Bugfix: Choosing another webserver skin did not immediately load the new HTM files (look&feel only changed after a restart of PRTG)
  • Bugfix: Displaying a toplist without data in the web interface could cause a crash of PRTG

May 31th 2006 - Version 5.3.0.812/813

  • Bugfix: In the 1st line of the CSV export files a "," was at the wrong place
  • Bugfix: The "SNMP Helper Pro Extension for MS SQL Server" oid library now correctly displays the instance name and sub object names

May 12th 2006 - Version 5.3.0.758/759

  • Bugfix: SNMP Port setting was ignored (instead the standard port 161 was always used)

May 10th 2006 - Version 5.3.0.738/739

  • New: Updated Manual

Apr 24th 2006 - Version 5.3.0.687/688

  • New: Added support for SNMP Version V2c and V3
    • Added support for 64 bit counters for devices that support SNMP V2c/V3
    • Added support for username/password for SNMP requests (SNMP V3)
    • Added support for encryption of SNMP requests (SNMP V3)
    • New: 64 bit traffic counters now enable PRTG to monitor traffic on high-traffic ports with gigabit bandwidth loads
    • New: When scanning devices for new sensors with SNMP V2c or V3 the 64 bit traffic counters are automatically used when available
  • New: Added columns for "Current Value" and "Unit" in the sensorlist
  • New: Added a "Test" button for notifications
  • New: Added HTML email notifications (uses same filename with a .htm extension)
  • New: Added new placeholder "#value" for notifications (shows sum of all channels)
  • New: Improved stability when loading data (even for corrupted data files)
  • Bugfix: Fixed HTTP notifications
  • Bugfix: When creating new sensors from a library the Multiply/Divide settings was sometimes set incorrect
  • Bugfix: Temporary files of the reporting engine were not always properly deleted after use
  • Bugfix: Fixed reboot problem of the PRTG service for systems that have the "NM" service installed
  • Minor bugfixes

Mar 6th 2006 - Version 5.2.0.581/582

  • Bugfix: In certain situations graphs showed spikes during a restart of PRTG
  • Bugfix: "DEL" key now works correctly in the Reports view
  • Bugfix: Correct handling of the "Cancel" button in the dialog "Do you want to save *.prtg file" upon program termination

Feb 27th 2006 - Version 5.2.0.574/575

  • New: Fully updated manual and help file
  • New: Added the "Basic Linux Monitoring" OID Library for SNMP monitoring of Linux systems (supports monitoring of disks, memory and CPU load)
  • Some minor bugfixes

Feb 20th 2006 - Version 5.2.0.565/566

  • New: For each sensor one or more horizontal lines can be shown in the graphs ("limit lines" in the sensor settings)
  • Bugfix: SNMP Helper Pro Sensors did not show up completely

Feb 15th 2006 - Version 5.2.0.559/560

  • Minor Maintenance release

Feb 9th 2006 - Version 5.2.0.548/549

  • New: PRTG now fully supports SNMP Helper Pro which enables you to monitor several thousand performance counters on Windows Systems and on MS SQL Server, Exchange, ISA and BizTalk Server for maximum in-depth monitoring
  • New: Improved performance when editing sensors in the GUI for large installations (>50 sensors). Now some unreliable sensors do not slow down editing of the other sensors anymore
  • New: SNMP Helper Freeware installer included with PRTG's setup is now version 1.4
  • New: SNMP Custom OID sensors now support 64bit values
  • New: Help|View Log Files shows PRTG's logfiles
  • New: If the service had experienced errors the logfile will pop up as soon as the GUI is started the next time
  • New: In case of failures PRTG writes a message to the application event log
  • New: IPs in toplists that can't be resolved (using reverse DNS) are shown in brackets
  • New: Reverse DNS cache is refreshed every 24 hours
  • New: Groups can be collapsed in the web interface
  • Bugfix: Some users experienced problem when creating reports
  • Bugfix: When a channel was removed the data was shown incorrectly
  • Bugfix: Fixed a memory leak when sending reports via SMTP
  • Bugfix: Fixed a small memory leak in the reverse DNS engine
  • Bugfix: No more "line too long" errors in webserver
  • Bugfix: In some situations reports were not sent
  • Bugfix: Billing calculations could be incorrect depending on the order of price table entries
  • Bugfix: Billing shows a message if bandwidth/volume exceeds price table entries
  • Bugfix: Fixed error that showed up if a paused sensor was deleted or if a group with a subgroup was moved down
  • Bugfixes: Various smaller GUI issues
  • Changed: New names for the error/message logfiles

Dec 12th 2005 - Version 5.1.1.474

  • New: Toplist charts also available in web server interface
  • New: For Toplist charts you can now choose between pie charts or bar charts
  • Enhancement: On x64 windows systems the Packet Sniffer Driver WinPCap is not installed (x64 not supported yet)
  • Enhancement: Improved detection of already running copies of PRTG during installation
  • Bugfix: Non-Admin user can now run PRTG without error messages
  • Various smaller bugfixes

Dec 6th 2005 - Version 5.1.0.452

  • New: Automatic Network Discovery searches your network for available SNMP enabled devices to create sensors automatically
  • New: Various Toplist improvements
    • Now multiple Toplists are available per NetFlow and Packet Sniffer sensor
    • Top Talkers, Top Connections and Top Protocols are configured by default for new sensors
    • Toplists now shown with direct links in the Web Interface (sample)
    • Toplists now show a pie chart of the top entries
  • Bugfix: Reports crashed if no report logo file was selected
  • Bugfix: Billing now works as expected for multi-price-range setups
  • Bugfix: PRTG crashed sometimes when last remaining sensor was deleted
  • Bugfix: When upgrading from PRTG Version 4 the IP and port filter lists were imported incorrectly
  • Some internal changes

Nov 21st 2005 - Version 5.0.3.398

  • Bugfix: Sometimes incorrect sums and coverages over 100% were displayed

Nov 17th 2005 - Version 5.0.3.379

  • Bugfix: "Delete sensor" function could cause a crash of PRTG
  • Bugfix: Sometimes daily reports were not sent automatically or only every second day
  • Bugfix: Sometimes when switching between views the sensor list was not shown

Nov 15th 2005 - Version 5.0.1.356

  • Bugfix: Broken DAT files from the historic monitoring data could cause the startup to fail
  • Bugfix: Sometimes on Live Graphs the data lines were incomplete
  • Changed: Dates in report headers now use system date format settings
  • Minor internal changes

Nov 10th 2005 - Version 5.0.1.310

  • Minor Bugfixes: "Add Group" function was invisible, incorrect credentials caused an exception in the web server, admin account settings were incorrect after upgrade from V4, password was not hidden in the HTML login screen

Nov 9th 2005 - Version 5.0.1.300 - New Major Version

  • See above for a list of new features
  • Note: Customers who have purchased version 4 after August 1st 2005 are eligible for a free upgrade, all other customers can receive an upgrade discount
  • See the Upgrade Instructions for more information

What's new in Version 5

This list shows the major new improvements and new features in Version 5. Please see the detailed change log below for in-depth information about changes in the product.

  • New: User Interface Redesign
    • Offers six different views of your data: Single Graph, Multiple Graphs, Custom Graphs, Sensorlist, Web Browser and Reports
    • Enhanced support for larger networks
    • Automatic Network Discovery scan network for devices
    • Sensors can be organized in hierarchical groups, sensors can be sorted using drag&drop 
    • You can select one or more sensors or a group of sensors from the sensor list and immediately get a combined graph of the sensors or change e.g. the IP address of several sensors in one step
  • New: Online Packet Analysis 
    • Uses a packet sniffer or analyzes Cisco Netflow data streams
    • Shows up to the minute traffic details about your network
    • Classifies the traffic by IP address, protocol, MAC address and other parameters
    • Top Talkers: Lists systems in your network with the highest bandwidth usage
    • Top Connections: Shows the combinations of PCs that exchange the most data packets
    • Top Protocols: Tells you which Internet protocols use up your bandwidth
  • New: Reporting Engine with Billing System
    • Create on-demand or scheduled reports, print them or export them as HTML or PDF files
    • Schedule reports daily, monthly or yearly
    • Supports calculation of Percentiles and a new billing system
    • Billing system supports calender-based, volume-based and percentile-based fees
  • And many more enhancements, e.g.:
    • Web interface is now faster and easier to use
    • Rewritten user and usergroup account management for the web server
    • Supports POP3-before-SMTP when sending emails
    • More SNMP tweaks for "touchy" devices
    • Purging of old data from the monitoring database
    • Comments can be entered for sensors and panels (e.g. for display in the web interface)
    • Graph's axis minimum can be set manually
    • Powerful filtering for Netflow and Packet Sniffer sensors 
  • Note: Customers who have purchased version 4 after August 1st 2005 are eligible for a free upgrade, all other customers can receive an upgrade discount
  • See the Upgrade Instructions for more information

Change Log of Version 4

Nov 2nd 2005 - Version 4.3.1.566 - Final version 4.x release

  • Changed: .prtg files are not compromised anymore if routers send back ZERO characters in port names

Sep 21st 2005 - Version 4.3.1.562

  • New: "Ignore zero values in delta sensors" option for SNMP in the high compatibility options, this was always ON in the old versions
  • New: "Bind IP" option in the SNMP settings (default "any") can be used to select an IP to use for SNMP requests

Sep 12th 2005 - Version 4.3.1.534

  • Bugfix: Minor Bugfixes

Aug 25th 2005 - Version 4.3.1.522

  • Bugfix: Service is starting faster now, avoiding incorrect "The service could not be started" messages.

July 26th 2005 - Version 4.3.1.510

  • Bugfix: Error message was shown when new sensors where added to a graph

July 19th 2005 - Version 4.3.1.505

  • Bugfix: Sometimes problems occured when the timespan of a graph was changed

July 14th 2005 - Version 4.3.1.498

  • New: When creating traffic sensors port names can be read from the device via a specific OID (useful e.g. for Cisco routers)
  • New: All Enterprise Editions now support Netflow Collectors when corresponding add-on licenses are purchased and entered
  • Minor bugfixes

June 22nd 2005 - Version 4.3.0.470/471

  • With version 4.3 we have considerably improved PRTG's versatility for network traffic monitoring by adding a Packet Sniffer and a Netflow collector to the SNMP monitoring featured by previous versions.
    • SNMP (Simple Network Management Protocol) is the basic means of gathering bandwidth and network usage data. Monitoring the bandwidth usage of routers and switches port-by-port is the most common use of SNMP as well as monitoring device readings like memory, CPU load etc.
      • Recommended for most standard situations
      • Does not support differentiation of traffic by service/protocol
      • Causes the least CPU load
    • NEW: Using the Packet Sniffer PRTG can inspect all network data packets passing the local machine's network card. You can either only monitor the traffic of the machine running PRTG or you must make sure that all network traffic you want to analyze passes it (e.g. by connecting it to the "monitoring" port of a switch).
      • Recommended if differentation of traffic by service/protocol is desired
      • Creates the highest CPU load on the machine running PRTG
    • NEW: Netflow can be used with most Cisco routers to measure bandwidth usage. Although being the most complex type it is also the most powerful for high traffic networks.
      • Recommended for high traffic networks and for advanced users
      • Requires changes in the setup of the Cisco router (you must tell the router to send to the netflow packets to the machine running PRTG!)
  • New: Support for OIDs for environmental monitoring using devices from www.pcmeasure.com, www.messpc.de

April 18th 2005 - Version 4.2.1.408/409

  • Maintenance Release with minor bugfixes
  • Bugfix: in some conditions a graph did display the default period instead of the selected one

March 30th 2005 - Version 4.2.1.385/386

  • New: Changing the templates for the web interface is now enabled for the Trial Edition and for the Enterprise Unlimited Edition
  • Bugfix: Fixed editing the detailed high compatibility mode options
  • Bugfix: Fixed threshold and volume notifications for sensors that have scale factor enabled (including some library sensors)

March 4th 2005 - Version 4.2.0.363/364

  • Bugfix: Detecting multiple instances of PRTG4 running on one machine sometimes did not work on Windows NT and Windows 2000

February 28th 2005 - Version 4.2.0.356/357

  • Important: Make a backup! After installing V4.2.x over a previous version and running it once you can not go back to a 4.1.x version because the file formats have changed.
  • Vastly improved SNMP OID Library
    • Added a grouped treelist for easier access to the growing number of sensor values
    • Added various Cisco OIDs (CPU Load, Environment, Memory)
    • Enhanced support for CPU Load monitoring on multi processor systems
    • Support for storage device monitoring (e.g. harddisks of windows systems)
    • Support for OIDs of IIS (Sent Files, Received Files, Current Users, Current Auth. Users, Total Users, Total Auth. Users, Peak Users, Peak Auth. Users, Current Connections, Peak Connections)
  • More SNMP Helper Library OIDs: Support for more SNMP Helper OIDs (CPU, System, Memory, Drives, Network)
  • New: For each sensor default units can now be set individually (formerly this was only possible per graph). This new setting is used in the webserver, email reports and when creating new graphs/tables. In graphs the units can still be overridden.
  • New: Added option for scaling measured values of a sensor by multiplying/dividing with a fixed value
  • New: Improved sensor channel management
    • Each channel (e.g. IN, OUT, SUM) of a sensor can be hidden/shown separatly
    • Easier color settings dialog for channels of a graph
  • New: Panels can be sorted manually
  • New: Changed file format of sensor/panel settings file to XML format
  • New: If network drives are used to store PRTG's setting a warning regarding possible authentication issues is be shown
  • New: Added more tweaks to the high compatibility mode
  • New: Tweaks of the high compatibility mode can be enabled individually
  • Changed: When spike filter settings are changed the historic data cache is refreshed automatically
  • Bugfix: Splitter in the sensor list snapped to position 0
  • Bugfix: It was possible to disable both sensorlist and panels
  • Bugfix: Fixed memory leak in reporting/percentile calculation

December 9th 2004 - Version 4.1.0.265/266

  • New: Added even more tweaks to the high compatibility mode
  • New: Automatic detection of changes in the numbering of ports. On some devices sensors showed the "No such name" message after a reboot of the device (e.g. some Cisco routers) and had to be re-created in PRTG. Now PRTG automatically searches for the new port number and continues monitoring. Note: This also made changing the filenames of the historic data files necessary.
  • Bugfix: Solved bug in data calculation that showed up in some rare cases

December 7th 2004 - Version 4.1.0.256/257

  • New: Registered users must download the commercial installer from updates.paessler.com in order to install Commercial Editions
  • New: Volume and threshold notifications via email can be configured for each sensor
  • New: Manual and alphabetic sorting of sensors and groups
  • New: Group operations
    • Activate/deactive all sensors in a group
    • Delete group with all sensors
    • Rename group
  • New: Optimized writing of logging data to minimize disk/CPU usage peaks
  • New: If "run as service" option is disabled in global options the service is removed from the services list
  • New: "Copy graph to clipboard" function adds graph title and legend to the image
  • New: Further improved device compatibility
  • New: Sensor limit is now counted against active sensors only
  • Bugfix: Uninstall on Windows 98 crashed

November 15th 2004 - Version 4.0.8.154

  • New: Now Service can be run under any account (formerly only SYSTEM account was working)
  • New: When entering custom OIDs PRTG tries to correct incorrect values automatically
  • New: Improved stability and new "compatibility mode" for slow devices (e.g. Zywall) (See global settings)
  • New: Each sensor can now send multiple notifications (sensor settings)

October 18th 2004 - Version 4.0.7.139

  • New: Added option for "monthly interval" when creating reports (report dialog)
  • New: Added setting for number of decimal digits for tables in the web GUI (options dialog)
  • New: Added setting for minimum interval coverage threshold for x% percentile calculation (options dialog)
  • New: Added automatic filtering of erratic zero SNMP readings that some buggy devices occasionally report to PRTG
  • Changed: Enhanced graph creation to reduce number of gaps in graphs (e.g. if incomplete data is available due to a reboot)
  • Bugfix: Fixed sporadic memory leak in percentile calculation of the report generator
  • Bugfix: Fixed monitoring data loss that could occur during a reboot when running as service
  • Bugfix: Webserver's sensor pages can now be accessed with panel passwords

September 22nd 2004 - Version 4.0.5.119

  • Initial release of Version 4

Mar 15th 2004 - Version 3.25

  • Final release of Version 3.x
  • Bugfix: In some situations sensors stopped recording traffic

By Category

PRTG Traffic Grapher V6