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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 iSE, as soon as the iSE is connected to the network, there is an exchange of
information between DHCP server and the iSE. During this process the IP address, the
Gateway address, and the Subnet Mask will be assigned to the iSE by the DHCP server.
Note that the DHCP server must be configured correctly to do such assignment.
If fixed or static IP address is desired, the DHCP must be disabled. The iSE 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).
Figure 3.2 DIP Switch on the Bottom Side of iSE
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 the Access Control page in the
iSE Home Page. The default DNS name for an iSE is "eis" followed by the last four
digits of the MAC address of that particular iSE.
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 iSE.
2. The iSE is 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 Server 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 iSE. 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.
1
4
3
2
OFF
ON
DIP switch # 3 shown
in “ON” position