Hirschmann RS20 User Manual page 121

Network Load Control
Parameter
Max. Response Time
Transmit Interval
Group Membership Interval
Table 7: Value range for Max. Response Time, Transmit Interval and Group
Membership Interval
Multicasts

With these frames you can enter global settings for the Multicast
functions.
Prerequisite: The IGMP Snooping function is activated globally.
Unknown Multicasts
In this frame you can determine how the device in IGMP mode sends
packets with known and unknown MAC/IP Multicast addresses that
were not learned through IGMP Snooping..
"Unknown Muilticasts" allows you to specify how the device transmits
unknown Multicast packets:

"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.
Note: The way in which unlearned Multicast addresses are handled
also applies to the reserved IP 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.
UM BasicConfig L2E
Release 8.0 05/2013
Protocol Version
1, 2
3
1, 2, 3
1, 2, 3
8.2 Multicast Application
Value Range
1-25 seconds
1-3,598 seconds
2-3,599 seconds
3-3,600 seconds
Default Setting
10 seconds
125 seconds
260 seconds
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