Technical Support Topics...
Operating System and other application requirements
Will it work with your
switch? (switch compatibility list - this is a list of switches
the application has
been tested with)
The most common question we get is 'why don't I see IP addresses?'.
The switch port mapper gathers MAC addresses from the switch - Switches
generally do not know IP addresses of connected devices in them unless your
switch is a core switch like a 6509 or a Nexus. To get the IP addresses, we
require ARP tables to match MAC addresses to IP addresses since there is no
way to ask for an IP given a MAC. The application collects ARP tables (MAC/IP
associations) from a variety of sources:
1. your computer
2. the switch(es) you are using it with
3. two optional external SNMP enabled devices.
We recommend they be a
router or a server on the network segment the switch is serving.
Those ARP tables are combined into a single ARP table for lookups (Database
Maintenance/Combined ARP Table). ARP tables are used because there is no
reliable protocol to get an IPv4 address given a MAC address.
Note that the combined ARP table is cleared on exit, this is controllable
in Global Settings.
Problem: Switch Port Mapper 2.x - Ping Sweep appears to go on forever or hang
Solution: It's not hanging, you need to checked the
Ping Sweep settings before starting a mapping.
The application uses your subnet mask to define a default Ping Sweep range
and prior to v2.05, Ping Sweep was on by default. If you are on a small network
with a 255.255.255.0 mask, the default range is 253 hosts - not a problem. But if you are on a 10.x.x.x
network with a 255.0.0.0 mask, the default range is huge and you have two options: 1. turn off Ping Sweep or
2. edit the range using the Ping Sweep editor to match the segments of the network you are actually using.
There can be several ranges in Ping Sweep, not just one.
Note: the Ping Sweep on/off settings are saved with
the Switch 'Configuration', but not the ranges. If you choose to turn it off and reload another switch's
configuration, please check to make sure it is turned off. You can edit each switch configuration by clicking
on Switch Lists, then on Edit Switch Configurations.
Problem: Switch Port Mapper 2.x - starting the app, exiting,
restarting the app one or more times causes computer freeze on
Windows 7 - 64 bit.
Solution: Running the app in Safe-Mode works fine.
The problem is the video card drivers are out of date. Update the
drivers from the video chipset manufacturer instead of through
SQL Database Question: once in a while we are asked
if the application can interact with a different database like MySQL or Microsoft
SQL Server instead of SQLite.
Answer: SQLite is very fast and tightly integrated
into the software. SQLite is a standalone database without the
overhead of client/server. It is not 'installed' in the same sense
as the other database. It uses a DLL to interact with database files
containing one or more SQL tables. By using SQLite, we are most
likely providing a much faster set of results than we would with
other server database packages. There may be a time later on when we
allow connection to an external server databases for the purpose of
sending history results or some other tables for quick review by
other software. If you are interested in SQLite, please visit
http://www.sqlite.org/ - the
software is open source and you are probably using it every day: it
is used in Firefox, iPhones, iPads, and many other products.
Do you have a v1 license?
Upgrade from v1.x license to v2.x license.
Copyright 2013 Northwest Performance Software, Inc. All
'NetScanTools Pro', 'NetScanTools Standard', 'NetScanTools LE', 'NetScan', 'ipPulse',
'Northwest Performance Software' and 'NetScanTools.com', are trademarks of
Northwest Performance Software, Inc.
Netscantools is a registered trademark of Northwest Performance Software,
*Any trademarked names mentioned herein are the property of their respective
Last modified April 29, 2013