Owner's manual

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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).
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’s are shipped with a default static IP address of 192.168.1.200 and
Subnet Mask of 255.255.255.0.
3. On Windows servers where DHCP and DNS are separate functions it is very
important to configure the DHCP server to communicate with the DNS in order
for the iSE’s Host Name to correctly respond. If you cannot access the iSE
using its Host Name, please contact your network administrator to make sure
the DHCP and DNS servers are linked together.
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.
To enable the DHCP,
besides using DIP switch
#3, set the iSE’s IP
address to 0.0.0.0.
An iSE with IP address of
0.0.0.0 will request an IP
address, gateway
address, and subnet
mask from the DHCP
server over the Ethernet.
1
4
3
2
OFF
ON
Figure 3.2 DIP Switch on the Bottom Side of iSE
DIP switch #3
shown in
“ON” position