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8. Interface Functionalities
8.1
Device Information
By using GigE all data packets are sequentially transmitted over one cable. At the begin-
ning of a frame will transmitted a Leader and at the end will transmitted a Trailer.
8.2 Packet Size and Maximum Transmission Unit (MTU)
Network packets can be of different sizes. The size depends on the network components
employed. When using GigE Vision
®
- compliant devices, it is generally recommended
to use larger packets. On the one hand the overhead per packet is smaller, on the other
hand larger packets cause less CPU load.
The packet size of UDP packets can differ from 576 Bytes up to the MTU.
The MTU describes the maximal packet size which can be handled by all network com-
ponents involved.
In principle modern network hardware supports a packet size of 1518 Byte, which is spec-
ified in the network standard. However, so-called "
Jumbo frames" are on the advance as
Gigabit Ethernet continues to spread. "Jumbo frames" merely characterizes a packet size
exceeding 1500 Bytes.
Baumer VLXT cameras can handle a MTU of up to 16384 Bytes.
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