Hirschmann RS20 User Manual page 104

Network load control
GMRP per Port
This table column enables you to enable/disable the GMRP for each
port when the global GMRP is enabled. When you disable the
GMRP at a port, no registrations can be made for this port, and
GMRP packets cannot be sent out of this port.
GMRP Service Requirements
Devices that do not support GMRP can be integrated into the Multi-
cast addressing by means of
a static filter address entry on the connecting port
selecting "Forward all groups" in the table column "GMRP Ser-
vice Requirement". The device enters ports with the selection
"Forward all groups" in all Multicast filter entries learned via
GMRP.
Note: If the device is connected to a HIPER-Ring, in the case of a ring
interruption you can ensure quick reconfiguration of the network for data
packets with registered Multicast destination addresses by:
enabling IGMP on the ring ports and globally, and
enabling "IGMP Forward All" per port on the ring ports
or
enabling GMRP on the ring ports and globally, and
enabling "Forward all groups" on the ring ports.
104
7.2 Multicast application
Basic Configuration L2P
Release 4.2 07/08