User`s manual

Preliminary
Genie Monochrome Series-GigE Vision Camera Network Tools • 75
Network Tools
IP Configuration Mode Details
The following descriptions provide more information on the IP configuration modes supported by
Genie. In general automatic IP configuration assignment is sufficient for most Genie installations.
Link-Local Address (LLA)
• LLA is also known as Auto-IP. It is used for unmanaged networks including direct connections
from a GigE Vision device to a dedicated NIC.
• A subnet configured with LLA cannot send packets across routers but only via Ethernet switches.
• LLA is the recommended scheme when only one NIC is connected to GigE cameras. LLA is fully
automatic requiring no user input. Ensure only one NIC is using LLA on your PC, otherwise IP
conflicts might result.
• The NIC will automatically assign a random IP address within the 169.254.x.x subnet. The LLA
protocol ensures there are no conflicts with other devices through an arbitration scheme.
• The Windows NIC configuration must be set to DHCP (the typical default case) and no DHCP
server must be present on the network. Otherwise, an IP address gets assigned by the DHCP
server. Windows will turn to LLA when no DHCP server answers requests coming from the NIC.
• Windows takes up to 1 minute to obtain an LLA IP address. With Windows XP, with no DHCP
server involved, the network adapter icon in the system tray (in Windows XP) typically shows
"limited or no connectivity".
This is normal (see Microsoft KB article #892896) and
indicates that the network does not have connectivity beyond routers.
• Windows and Genie are still running the DHCP process in the background. If a DHCP server
becomes available on the network, the NIC will get a DHCP assigned IP address for the connected
device but connections on the LLA IP address will be lost.
• Important: If the host system has multiple NIC devices configured with LLA, then the
communication stack cannot accurately resolve which NIC to forward an IP packet on the 169.254
segment. Limit the number of NIC configured using LLA to one interface.
• Use the DALSA Network tool to change the Genie from the default DHCP/LLA mode to
Persistent IP mode. Note that DALSA recommends DHCP/LLA as the mode of operation.