Telos Z/IP ONE User Manual page 51

3. Type "ipconfig /all" then press Enter. You should see some entries similar to the ones shown below:
If the PC has multiple adapters you will see multiple entries displayed. In the example above, the PC
has a wireless adapter and the Media State for it is shown as disconnected which indicates that the
wireless is currently disabled.
Following this is an entry for the "Local Area Connection" Ethernet adapter. In our case this is the
entry of interest because it is plugged in the same Ethernet network that we want to learn more
about. The section of interest is under the heading "Ethernet Controller" and contains the following
interesting entries:
Dhcp Enabled – Yes => Indicates that this PC was configured for DHCP so there must be a DHCP
server available.
IP Address – 192.168.123.101 => IP address assigned by DHCP server.
Subnet mask – 255.255.255.0 => This is the netmask for this subnet. We can use the same netmask
for the Z/IP.
Default Gateway – 192.168.123.254 => Another important entry, we can use the same gateway
address on the Z/IP.
DNS Servers – 69.75.169.15 and .16 => DNS server addresses. Use the first one on the Z/IP.
NOTE: The values in this example are not valid. Do not use these values on your Z/IP!
The ipconfig command will give you the subnet mask, gateway and DNS server addresses. It does not
directly give you the IP address you should use on the Z/IP. If DHCP is available, as it is in this example, you
can just configure the Z/IP to use DHCP. It will obtain an IP address automatically. If DHCP is not available
then read on; the next section will describe this case.
9.3 Find an Available IP Address without a DHCP Server
What can you do if a DHCP server is not available on your network? In this case we'll search for an IP
address by pulling one out of a hat then testing to see if it is already in use.
In the example above, the PC's IP address was 192.168.123.101 and the subnet mask was 255.255.255.0.
This means that the last 8 bits indicate the host portion of the address. On this network, valid IP addresses
would run from 192.168.123.1 to 192.168.123.254. Right away, we'll avoid .1 and .254 because they are
often assigned to the gateway. That leaves numbers from 2 to 253, still a pretty big range. So just choose a
WHen An iT DepArTMenT iS noT AVAilABle | 43