COBOX-FL-11 Lantronix, COBOX-FL-11 Datasheet - Page 30
COBOX-FL-11
Manufacturer Part Number
COBOX-FL-11
Description
Ethernet Modules & Development Tools EXTERNAL DUAL PORT
Manufacturer
Lantronix
Type
Device Serversr
Datasheet
1.COBOX-FL-11.pdf
(135 pages)
Specifications of COBOX-FL-11
Product
Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Getting Started
2.3.1 DHCP
The unit ships with a default IP address of 0.0.0.0, which automatically enables DHCP.
Provided a DHCP server exists on the network, it will assign the unit an IP address, gateway
address, and subnet mask when the unit boots up. The CoBox-FL has acquired an IP address
if the red LED stops flashing and the green
exists, the unit responds with a diagnostic error: the red Diagnostic LED blinks continuously,
and the green
You can use the DeviceInstaller software to search the network for the IP your unit has been
assigned by the DHCP server and add it to the managed list. See Add the Unit to the Manage
List later in this chapter.
Note: This DHCP address will not appear in the unit’s standard configuration screens. You
can determine your unit’s DHCP-assigned IP address from the DHCP server, or in Monitor
Mode. When you enter Monitor Mode from the serial port with network connection enabled
and issue the NC (Network Communication) command, you will see the unit’s IP
configuration.
2.3.2 AutoIP
The unit ships with a default IP address of 0.0.0.0, which automatically enables Auto IP
within the unit. AutoIP is an alternative to DHCP that allows hosts to automatically obtain an
IP address in smaller networks that may not have a DHCP server. A range of IP addresses
(from 169.254.0.1 to 169.254.255.254) has been explicitly reserved for AutoIP-enabled
devices. The range of Auto IP addresses is not to be used over the Internet.
If your unit cannot find a DHCP server, and you have not manually assigned an IP address to
it, the unit automatically selects an address from the AutoIP reserved range. Then, your unit
sends out a (ARP) request to other nodes on the same network to see whether the selected
address is being used.
AutoIP is not intended to replace DHCP. The unit will continue to look for a DHCP server on
the network. If a DHCP server is found, the unit will switch to the DHCP server-provided
address and reboot.
Note: If a DHCP server is found, but it denies the request for an IP address, the unit does not
attach to the network, but waits and retries.
AutoIP can be disabled by setting the unit’s IP address to 0.0.1.0. This setting enables DHCP
but disables AutoIP.
2-4
•
•
If the selected address is not in use, then the unit uses it for local subnet communication.
If another device is using the selected IP address, the unit selects another address from the
AutoIP range and reboots itself. After reboot, the unit sends out another ARP request to see if
the selected address is in use, and so on.
GL
LED blinks five times. This blinking only continues for about 5 seconds.)
GL
LED is on continuously. (If no DHCP server
CoBox-FL User Guide
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