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16 Multicast
228
The Multicast->IGMP->IGMP->New menu consists of the following fields:
Fields in the IGMPIGMP Settings menu
Field
Interface
Query Interval
Maximum Response
Time
Robustness
Last Member Query In-
terval
Funkwerk Enterprise Communications GmbH
Description
Select the interface on which IGMP is to be enabled, i.e. queries
are sent and responses are accepted.
Enter the interval in seconds in which IGMP queries are to be
sent.
Possible values are
to
The default value is
.
For the sending of queries, enter the time interval in seconds
within which hosts must respond. The hosts randomly select a
time delay from this interval before sending the response. This
spreads the load in networks with several hosts, improving per-
formance.
Possible values are
to
The default value is
.
Select the multiplier for controlling the timer values. A higher
value can e.g. compensate for packet loss in a network suscept-
ible to loss. If the value is too high, however, the time between
logging off and stopping of the data traffic can be increased
(leave latency).
Possible values are
to .
The default value is .
Define the time after a query for which the router waits for an
answer.
If you shorten the interval, it will be more quickly detected that
the last member has left a group so that no more packets for
this group should be forwarded to this interface.
Possible values are
to
The default value is
.
.
.
.
R1xxx/R3xxx/R4xxx
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