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ABB i-bus
®
KNX
Planning and application
4.1.5
IGMP
The device supports IGMP snooping version V3.
IGMP snooping is the capability of routing multicast routing traffic only to where it is actually needed. The
IT infrastructure and the device must use the same IGMP version, otherwise this IGMP mechanism will not
work.
To enable a multicast address, the device logs in at this multicast address with a membership report.
4.1.6
IPR/S as an area coupler
The IP Router Secure can assume the function of an area coupler in a KNX system. For this purpose it
must receive the physical address of an area coupler (1.0.0...15.0.0). Up to 15 areas can be defined with
area couplers in an ETS project.
The following figure shows this topology with IP Router Secure devices as area couplers and KNX Line
Couplers (LK/S).
38 2CDC502099D0211 Rev. A | IPR/S 3.5.1
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