Setting Igmp Snooping - Hirschmann RS20 User Manual

Network Load Control
8.2.4

Setting IGMP Snooping

 Select the Switching:Multicast:IGMP dialog.
Operation

The "Operation" frame allows you to enable/disable IGMP Snooping
globally for the entire device.
If IGMP Snooping is disabled, then
 the device does not evaluate Query and Report packets received,
and

it sends (floods) received data packets with a Multicast address as
the destination address to every port.
Settings for IGMP Querier and IGMP

With these frames you can enter global settings for the IGMP settings and
the IGMP Querier function.
Prerequisite: The IGMP Snooping function is activated globally.
IGMP Querier
"IGMP Querier active" allows you to enable/disable the Query function.
"Protocol version" allow you to select IGMP version 1, 2 or 3.
In "Send interval [s]" you specify the interval at which the device sends
query packets (valid entries: 2-3,599 s, default setting: 125 s).
Note the connection between the parameters Max. Response Time,
Send Interval and Group Membership Interval
"Parameter Values").
IGMP-capable terminal devices respond to a query with a report
message, thus generating a network load.
Select large sending intervals if you want to reduce the load on your
network and can accept the resulting longer switching times.
Select small sending intervals if you require short switching times and
can accept the resulting network load.
UM BasicConfig L2E
Release 8.0 05/2013
8.2 Multicast Application
(see on page 120
119