User manual

2.3 Assign the IP Address
There are two basic methods to assign the IP address: DHCP or a directed ping packet. Another
method is available for advanced users, by using Telnet or HyperTerminal. This information is
available in the Cohu 7100 Series Reference Manual.
2.3.1 DHCP
If the camera sits on a network that has a DHCP server, the camera can get its address from that
server. This feature can be used to have the camera email the administrator with the dynamic IP
address it receives from a DHCP server.
When using the DHCP method, the server will provide the camera with an unused address
automatically when the camera is powered up or rebooted. While this is a convenient method to
assign IP addresses, it requires that the camera's addresses be tracked each time they are powered
down or rebooted. Cohu recommends using static addresses by sending a “Ping” message to the
camera. See note below.
Note: It is recommended to configure the camera with a “Static” address. In this way, each
camera will always have the same address, which will simplify selection of cameras.
However, if the camera is on a controlled Network, the LAN administrator must be
informed of this requirement so that they can assign the IP number for each camera. Each
camera will then be set up with the assigned (and unique) IP number. For more
information, consult with the system administrator or refer to the documentation that
accompanied the DHCP server. Also refer to the Cohu 7100 Reference Manual for more
details.
2.3.2 Directed Ping Packet
To assign a static IP address to the Cohu 7100 Series camera, a directed ping packet is
transmitted to the camera's MAC address using “MS DOS Prompt” program.
1. Choose an IP address that is not currently being used by another device on the network. If
necessary, ask the system administrator for an available IP addresses.
2. Enter the ARP command at the command prompt. An ARP command consists of:
 The camera's hardware address (see label on the back of the camera)
 The desired IP address for the camera
 Format: arp -s <IP Address> <Hardware Address>
 Example:
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