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Baumer
13
GigE interface functionality
13.1
packet size and Maximum Transmission Unit (MTU)
Network packets can be of different sizes. The size depends on the network components used.
When using GigE Vision
ages. First, there is less overhead per packet and second larger packets reduce CPU load.
The size of UDP packets can vary from 576 bytes to MTU.
MTU describes the maximum packet size which all involved network components can process.
According to the GigE network standard, modern network hardware supports 1500 bytes packet
size. "Jumboframes" simply mean a packet size of more than 1500 bytes.
Baumer cameras are capable of MTU processing up to 16384 bytes.
13.2
Inter Packet Gap (IPG)
For optimal results in image transmission, some Ethernet-specific factors must be taken into ac-
count.
When starting image transfer at a camera, data packets are transferred with maximum transfer
speed. In compliance with the network standard, Baumer cameras operate on a 12-byte mini-
mum distance between every packet. This gap is referred to as Inter Packet Gap (IPG). Further
to the minimum IPG, The GigE Vision
hast to be user-defined).
INFO
According to the Ethernet standard, the IPG must not be inferior to 12 bytes.
V1.1 | VCXG.2 / VCXG.2.XC / VCXG.2.I / VCXU.2
®
-compatible devices, it is generally recommended to use larger pack-
®
-standards defines that IPG must enable scaling (.i.e.
GigE interface functionality
Operating Manual
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