Omega Engineering i.BTX-M manual Dhcp, IP Address

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 configured correctly to do 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

ON

OFF

1 2 3 4

ON

OFF

4 1 2 3

To enable the DHCP, slide DIP switch #3 to ON position and power the unit on. Besides using DIP switch #3 you can enable DHCP by settting the iServer’s IP address to 0.0.0.0. An iServer 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

Figure 3.2 DIP Switch on the Bottom Side of iServer

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 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 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.

3.5IP 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.

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