Forcing The Dhcp/Ip Address Settings To Known Values; Glossary Of Terms - Elk IP232 Installation And Configuration Manual

Forcing the DHCP/IP Address Settings to Known Values:

The ELK-IP232 supports an easy method for forcing it from a static IP address to DHCP mode or vice versa. This is
accomplished with the use of the "DEFAULT" Jumper located near the DB9M connector.
1. Power down the ELK-IP232. Carefully remove the plastic housing. Place a shorting jumper across the two pins
of the "DEFAULT" Jumper. Power the ELK-IP232 back up.
2. After a few seconds, the green LED will blink and repeat in a "coded" fashion, indicating either DHCP or STATIC
modes. If set for DHCP mode there will be 1 quick blink. If set for STATIC mode there will be 2 quick blinks.
When the ELK-IP232 is forced to STATIC mode its address will become 192.168.0.251.
3. If the blink indicates the wrong mode, power the unit down and back up to force it to the opposite setting.
4. When the green LED indicates that the ELK-IP232 is at the desired setting, remove the shorting jumper and
allow the ELK-IP232 to continue booting up. This may take a few seconds.

Glossary of Terms

Router- A communications device between networks that determines the best path between them for optimal performance. Routers are
used in complex networks such as enterprise-wide networks and the Internet.
Port - The identifier used by Internet transport protocols to distinguish among multiple simultaneous connections to a single destination
host.
MAC Address - unique number assigned by the manufacturer to identify each network interface on all network devices. The first few
digits of a MAC address typically identify the manufacturer. The remaining digits uniquely identify the specific interface on that individual
device. Also known as a "physical" address. (Example: 00409D:256EC0)
LAN (Local Area Network) - a computer network covering a local area, like a home, office or small group of buildings such as a college.
WAN (Wide Area Network) - a computer network covering a wide geographical area, involving vast array of computers. The best
example of a WAN is the Internet.
ISP (Internet Service Provider) - provides access to the Internet for others via some connectivity service(s). This might be in the form of
dial up services, web hosting services or the combination of both.
DSL (Digital subscriber line) - type of broadband connection that brings information to homes and businesses over ordinary copper
telephone lines.
URL (Uniform Resource Locator) - A string of characters that represents the location or address of a resource on the Internet and how
that resource should be accessed. World Wide Web pages are assigned a unique URL. Also known as an Internet address or web
address. (Example: http://www.elkproducts.com/)
TCP/IP (Transmission Control Protocol/ Internet Protocol) - the basic communication protocol of the Internet. This is a standard for
routing and data transfer around the world. The Internet Protocol is a connectionless protocol which provides packet routing. TCP is
connection-oriented and provides reliable communication and multiplexing.
IP Address (Internet Protocol Address) - the address of a computer attached to a TCP/IP network. Every client and server station must
have a unique IP address. (Example: 192.168.0.1)
"Static" IP Address - a permanent or non-changing IP address that is assigned to a node in a TCP/IP network. Static IP addresses are
generally used for servers, routers, etc.
"Dynamic" IP Address - an IP address that is automatically assigned to a client station in a TCP/IP network, typically by a DHCP
server.
DHCP (Dynamic Host Configuration Protocol) - a standard method for assigning IP addresses automatically to the devices on a TCP/IP
network. As a new device connects, the DHCP server assigns an IP address from a list of available addresses. The device retains this
IP address for the duration of the session. Once the device disconnects the IP address becomes available for use again.
ELK-IP232 Installation and Configuration Manual Page 13