3.3 DHCP
DHCP, Dynamic Host Configuration Protocol enables individual computers or devices to
extract their IP configurations from a server (DHCP server). If the DHCP is enabled on
your iServer, as soon as the iServer is connected to the network, there is an exchange of
information between DHCP server and the iServer. During this process the IP address,
the Gateway address, and the Subnet Mask will be assigned to the iServer by the DHCP
server. Note that the DHCP server must be correctly configured to make such assignment.
If fixed or static IP address is desired, the DHCP must be disabled. The iServer is
shipped with DHCP disabled (factory default). The DHCP can be enabled by setting the
DIP switch
# 3
to the
“ON”
position (refer to
Figure 3.2
).
DIP switch # 3 shown in
“ON”
position
Figure 3.2 DIP Switch on the Bottom Side of iServer
Setting the iServer’s IP address to
0.0.0.0
will also enable DHCP.
3.4 DNS
DNS, Domain Name System enables individual computers and devices to be recognized
over a network based on a specific name instead of an IP address. For example, instead
of having to use
http://192.168.1.200
(IP address), you would use only
http://eis03ec
or
any eight character name stored as Host Name under Access Control page in the
iServer Home Page. The default DNS name for an iServer is
"eis"
followed by the last
four digits of the MAC address of that particular iServer.
1. It is very important to communicate with the network administrator in order to
understand the DHCP and its existing configurations on the host server,
before enabling the DHCP on the iServer.
2. The iServers are shipped with a default static IP address of
192.168.1.200
and Subnet Mask of
255.255.255.0
.
3. On Novell networks or Windows 2000 where the DCHP is an updated
function of DNS this feature may be beneficial since a particular name can be
assigned eliminating the need for the IP address, as described in
Section 3.4.
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’s serial port. 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
.
OFF
ON
4
3
2
1
OFF
ON
4
3
2
1
14
