The Multicast->IGMP->IGMP->New menu consists of the following fields:
Fields in the IGMP Settings menu
Field
Description
Interface
Select the interface on which IGMP is to be enabled, i.e. quer-
ies are sent and responses are accepted.
Query Interval
Enter the interval in seconds in which IGMP queries are to be
sent.
Possible values are
to
D
.
The default value is
.
Maximum Response
Time
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
J
to
J
.
The default value is
J
.
Robustness
Select the multiplier for controlling the timer values. A higher
value can e.g. compensate for packet loss in a network sus-
ceptible to loss. If the value is too high, however, the time
between logging off and stopping of the data traffic can be in-
creased (leave latency).
Possible values are
to
E
.
The default value is
.
Last Member Query In-
terval
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
J
to
J
.
The default value is
J
.
11 Multicast
Gigaset Communications GmbH
226
hybird 120 Gigaset Edition
