Routing Protocols - Hirschmann RS20 Reference Manual

Switching
Parameters
Unknown Multicasts
Known Multicasts
Table 70: Known and unknown Multicasts
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.

118
Meaning
 Send to Query Ports:
The device sends the packets
with an unknown MAC/IP
Multicast address to all query
ports.

Send to All Ports:
The device sends the packets
with an unknown MAC/IP
Multicast address to all ports.
 Discard:
The device discards all packets
with an unknown MAC/IP
Multicast address.

Send to query and registered
ports:
The device sends the packets
with a known MAC/IP Multicast
address to all query ports and
to registered ports.
The advantage of this setting is
that it works in many
applications without any
additional configuration.
Application:
"Flood and Prune" routing in
PIM-DM.
 Send to registered ports:
The device sends the packets
with a known MAC/IP Multicast
address to registered ports.
The advantage of this setting is
that it uses the available
bandwidth optimally through
direct distribution. It requires
additional port settings.
Application:
Routing protocol PIM-SM.
4.4 Multicasts
Possible Default setting
values
Send to Query Send to All
Ports Ports
Send to All
Ports
Discard
Send to query Send to
and registered registered ports
ports:
Send to
registered
ports
RM GUI L2E
Release 8.0 05/2013