3.5 IP Address
Every active device connected to the TCP/IP network must have a unique IP address.
This IP address is used to build a connection to the iServer. Every computer using
TCP/IP should have a unique 32-bit address. It is divided into two portions, the network
ID and the host ID. For instance, every computer on the same network uses the same
network ID. At the same time, all of them have a different host ID. For more details about
the IP address see
Appendix B
.
3.5.1 Default IP Address
The iServer is shipped with a default IP address set to
128.100.101.254
and Subnet
Mask of
255.255.0.0
. If you are going to use a Web browser or Telnet program to access
the iServer using its default IP address, make sure that the PC from which you’re
establishing the connection has an IP address that is in the same range as the iServer’s
IP address (
128.100.x.x
, where
x
can be any number from 1 to 254. Note that your PC’s
IP address cannot be the same as the iServer’s IP address). You also need to make
sure that your PC’s Subnet Mask is
255.255.0.0
. This is a good way to access the
iServer over the network and make any configuration changes needed. If the factory
default address is already in use on your network, use an Ethernet crossover cable
between your computer and the iServer and modify the IP address or any other settings
within the iServer.
3.6 Port Number
All TCP connections are defined by the IP address and a port number. A port number is
an internal address that provides an interface between an application running on your
computer and the network through the TCP/IP protocol.
There are three default TCP socket port numbers assigned to the iServer:
1. Port (socket) number 1000 when using HTTPGET program.
2. Port (socket) number 2000 when trying to access the sensor (probe) connected to
the port of the iServer to receive ASCII data.
3. Port (socket) number 2002 when trying to access the iServer itself for Power
Recycling the iServer remotely. This can be done using Windows standard Telnet
application.
Telnet stands for Telecommunications Network, is a protocol that provides a way for
users (or clients) to connect to computers (or servers) on a network, whether in the next
building or across the world.
Example: C:\>Telnet 128.100.101.254 2002
You will then get the following screen.
Figure 3.3 Telnet Login into the iServer
You can also open a Telnet session using Tera Term Pro (this can be downloaded from
http://download.cnet.com/downloads/0-10062-100-890547.html).
10
10
Flash Memory Temperature/Humidity Firmware Version 1.00
Admin. Password:00000000
Admin. Login Successful
reset
The unit will reset in 5 seconds
_
The default
Admin. Password
Type "reset"
to reboot
the server