LANScan Version 2.01c(S1)

Release Notes


Thanks for your interest in LANScan Network Monitoring software. We are working hard to continually improve LANScan - adding features, improving performance and correcting problems.


If you purchased a LANScan Plus version, you'll receive updates of LANScan for a full year after purchase automatically. If you purchased a single license version of LANScan, you'll receive notification of new versions and upgrades may be purchased at an attractive price.


Version 2.01c has several important product improvements, documented below:


Performance – LANScans’ real time database has been significantly upgraded to supported high traffic levels. Previously, high levels of network traffic could cause LANScan to become unresponsive, use all of the CPU and/or use all virtual memory.


On reasonably powerful PCs(Pentium III 500 Mhz with 128Mb RAM), LANScan can easily monitor 100MB LANs running at 25-50% utilization.


Please note that many factors can influence LANScans’ ability to accurately monitor a network, including the performance of the PC, use of other programs simultaneously on the same PC, capability of the Network Interface Card, and the Operating System used.


Follow these general guidelines to get the best performance from LANScan:


1> Use Windows NT or Windows 2000. Both are more reliable than Windows 95, 98 or ME.


2> Limit the refresh rate and number of views open in LANScan. Drawing graphics is an expensive CPU task. Limiting the amount of graphics open in LANScan views leaves more processor time for analyzing network traffic.


3> When in doubt, add more RAM. LANScans’ real time database can grow rapidly on busy networks. Increasing system RAM, so that more of the database can remain in memory, will improve performance.


4> Use PCI network cards. Avoid older ISA Bus or PC Card interface network cards when possible. These can reduce overall performance as the system bus interface is not as fast as PCI cards.


Conversation and Protocol views – In order to improve system performance, Conversation and Protocol views with more than 100 entries will not be drawn as bar graphs. With this many bar graph segments, performance suffers, and the graph becomes unreadable. LANScan will now draw an empty graph in this case.


New ‘MAC Only’ Reporting Feature This new feature is for advanced users only. When MAC Only reporting is enabled, LANScan can be configured to ignore IP addresses for certain MAC network addresses. This is useful for monitoring traffic to/from Web Servers when bandwidth utilization numbers are needed, but individual IP conversations are not important. Contact LANScan software for further details. By default, this feature is disabled.


History file may be reset on startup(LANScan Professional) When enabled, LANScan Professional will use the current date to create a new LANScan History file on startup. This makes it easy to generate unique daily traffic histories.


Workspace may be selectively enabled/disabled(Disabled by Default)  LANScan can retain the layout of open views and other windows in a user workspace. Now LANScan will not prompt for a workspace unless the ‘Use Workspace’ feature is enabled, and LANScan will start in a default workspace configuration. Go to ‘Configure’ and ‘System  Settings’ to re-enable workspaces.


Percent now displays correctly on Trend views

Device Bandwidth corrected – Previously, if the network bandwidth was overridden for a device, the percentage was calculated incorrectly – that is now fixed.




Run the new executable to install LANScan. It is not necessary to uninstall the previous version. Note that a new license code is required for this Beta version.


A new database must be created – previous version configuration databases are not supported.


Known Problems


‘Quick View’ – Creating a ‘Quick Device View’ can cause LANScan to believe a permanent device has been created with the name used in the Quick View. Close LANScan and restart to clear the problem.


‘Crash on closing Device View’ Opening a device view and closing without any network traffic to/from the device can occasionally cause LANScan to crash.


Multiple NIC cards - If both cards have the same default name(displayed in the LANScan adapter dialog), LANScan will crash on startup. To avoid the problem, do not let LANScan create objects for all adapters. Create the objects manually and change the names to unique names.


If you need support or wish to contact LANScan Software:


via email:

via the Web:

via phone: 804 817 0014

via Fax: 804 817 0173

via Post:

LANScan Software, Inc.

2246 Ivy Road, Suite 15

Charlottesville, VA 22903