Owner manual

System Conﬁguration 3-41

The IGMP V2/V3 Settings screen appears.

You can conﬁgure the following parameters:

• Last Member Query Interval (deci-sec) – the amount of time in tenths of a second that the IGMP router

waits to receive a response to a Group-Speciﬁc Query message. The last member query interval is also the

amount of time in seconds between successive Group-Speciﬁc Query messages. The default last member

query interval is 1 second (10 deci-seconds).

• Last Member Query Count – the number of Group-Speciﬁc Query messages sent before the router

assumes that there are no members of the host group being queried on this interface. The default last

member query count is 2.

• Fast Leave – Toggling this option to On enables a non-standard expedited leave mechanism. The querier

keeps track of which client is requesting which channel by IP address. When a leave message is received,

the querier can check its internal table to see if there are any more clients on this group. If there are none,

it immediately sends an IGMP leave message to the upstream querier. By default, Fast Leave is set to Off.

Press Escape twice to return to the System Conﬁguration menu.

IGMP V2/V3 Settings

Last Member Query Interval(deci-sec): 10

Last Member Query Count: 2

Fast Leave: Off

Amount of time in deci-seconds that the IGMP router waits to receive a response