5 appendix, 1 finding an unknown ip address with switchinfo, Appendix – Contemporary Control Systems Compact Managed Switches Software Manual for Web Browser User Manual
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5 Appendix
5.1 Finding an Unknown IP Address with SwitchInfo
Sometimes it can be challenging to find a switch that has had its address assigned by a
DHCP server. On the Internet you can find many tools that can discover unknown
devices on an IP network. We recommend our free tool:
SwitchInfo available at:
Procedure
1. When you first access the switch — and before you change the switch’s default
IP address — record its MAC address that appears on the main screen (and is
found nowhere else).
2. Install the
SwitchInfo application.
3. Follow the
SwitchInfo instructions to scan the range of possible IP addresses
that could have been assigned by DHCP. The result will display a list of all
responding IP devices in the specified range. Since all managed switches made
by Contemporary Controls (CC) support SNMP, examine the list for lines that
begin with SNMP. The line reporting your switch will appear similar to the
following sample, but will specify the particular
IP address of your switch, the
product series to which it belongs, its firmware version and its MAC address:
SNMP: 10.0.0.223 Contemporary Controls EISX8M Managed Switch V5.0.8b 00:50:DB:00:13:3D
4. If the switch you are investigating is the only CC managed switch in your
network, there will be only one CC found by
SwitchInfo and its IP address will
now be known. But if there are more CC managed switches in the network, you
will need to find the line that ends with the MAC address that you recorded in
Step 1 — and so the IP address reported in that line will be the one that has
been assigned to your switch.
CAUTION:
•
When dealing with Windows Firewall, some equipment may not be found unless
firewall exceptions have been allowed. You may wish to disable the firewall until
your use of
SwitchInfo is complete.
•
Only use
SwitchInfo on networks for which you have permission. It can be
deemed invasive — and subject you to disciplinary action. In some jurisdictions
it might even be considered illegal — unless you have permission.