Dalsa Linea SWIR GigE Series User Manual page 91

Network Overview & Tools
IP Configuration Mode Details
The following descriptions provide more information on IP configuration modes supported by Linea
SWIR GigE. Automatic IP configuration assignment (LLA/DHCP) is sufficient for most installations.
Refer to Teledyne DALSA's Network Imaging Package manual for information on the Network
Configuration tool and optimization for GigE Vision cameras and devices.
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 recommended when one NIC is connected to a GigE camera. LLA is fully automatic
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requiring no user input.
Important: Ensure only one NIC is using LLA on your PC otherwise IP conflicts will result.
The NIC will automatically assign a random IP address within the 169.254.x.x subnet. The LLA
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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
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server must be present on the network. Otherwise, an IP address is assigned by the DHCP
server. Windows will turn to LLA when no DHCP server answers requests coming from the NIC.
While Windows and the camera are running, the DHCP process runs in the background. If a
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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. Teledyne DALSA's
Network Configuration Tool can enable Teledyne DALSA DHCP server on the NIC used for the
GigE Vision network.
Important: If the host system has multiple NIC devices configured with LLA, the
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communication stack cannot resolve which NIC to forward an IP packet too. Limit the number
of NICs configured using LLA to one interface. It is preferable that Teledyne DALSA DHCP
server is used instead of LLA mode (see next section).
If multiple NIC devices and cameras are connected use Teledyne DALSA's Network
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Configuration Tool to change the camera from the default DHCP/LLA mode to Persistent IP
mode. Note: Teledyne DALSA recommends DHCP/LLA as the mode of operation when a switch
is used to connect multiple devices.
Linea SWIR GigE Series Camera Network Overview & Tools
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