Hirschmann RSB20 - Page 68

Switching
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4.3 Multicasts
RM Web L2B
Release 5.3 05/2012
Note: The way in which unlearned Multicast addresses are handled
also applies to the reserved addresses from the “Local Network Control
Block” (224.0.0.0 - 224.0.0.255). This can have an effect on higher-level
routing protocols.