Extron Electronics DXP HDMI - Manual (Page 132)

DXP DVI, DXP DVI Pro, and DXP HDMI Series • Reference Information 126 126
The following is an example of an invalid Class C addressing scheme:
Device IP Address
Matrix Switcher Control Software computer 208.132.180.41
DXP DVI Pro switcher 192.157.180.42
NOTE: The above addresses are invalid because the network identifier for each address
is not the same even though each IP address is unique.
You can perform a test from your computer to check that a device at a particular address
is responding correctly or to determine its address (see “
Pinging for the IP Address ,”
below).
Subnet Mask
The subnet mask is another 32-bit binary number that is used to “mask” certain bits of
the IP address. This provides a method of extending the number of network options for
a given IP address. It works by allowing part of the host identifier to be used as a subnet
identifier.
It is important that you set the correct value for the subnet mask. The basic values
depend on the class of IP address being used.
Class Name Subnet Mask
Class A 255.0.0.0
Class B 255.255.0.0
Class C 255.255.255.0
See “ Subnetting, a Primer ” on page 130 for more information.
Pinging for the IP Address
To access the DXP switcher via the Ethernet port, you need the switcher IP address. If the
address has been changed to an address comprised of words and characters, the actual
numeric IP address can be determined using the Ping utility. If the address has not been
changed, the factory-specified default is 192.168.254.254.
Ping can also be used to test the Ethernet link to the DXP switcher.
Ping to determine Extron IP address
The Microsoft Ping utility is available at the command prompt. Ping tests the Ethernet
interface between the computer and the DXP switcher. Ping can also be used to
determine the actual numeric IP address from an alias and to determine the web address.
Ping the switcher as follows:
1. From the Windows Start menu, select Run... . The Run window opens.
2. In the Open text field, enter command .