The
Multicast
->
IGMP
->
IGMP
->
New
menu consists of the following fields:
Fields in the IGMPIGMP Settings menu
Field
Description
Interface
Select the interface on which IGMP is to be enabled, i.e. queries
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
.
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
to
.
The default value is
.
Robustness
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
.
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
to
.
The default value is
.
16 Multicast
Funkwerk Enterprise Communications GmbH
228
R1xxx/R3xxx/R4xxx
