2. Preparing for commissioning
2-4
Festo CPX-FB36-EN en 1611a English
the device. This can reduce the response times of the parti
cipants. The demand on the network bandwidth increases.
This does not pose a problem for smaller networks; the per
formance for larger networks, however, can be improved with
the following functions and/or protocols.
– Use of switches with “IGMP snooping”
– Segmentation of the network
Switches with “IGMP snooping”
By using an IGMP (Internet Group Management Protocol), the
switches are able to decide to which devices the various Mul
ticast telegrams are transferred. As a result, unnecessary
data traffic is avoided through Multicast.
Activate this function in all switches/routers used.
Configure at least one switch so that cyclical “IGMP quer
ies” are sent. The “IGMP snooping” function cannot work
properly without these “IGMP queries”.
Segmentation of the network
Split the machine into smaller network segments. This can
be realised without changing the network cabling, for
example, by using VLANs.
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