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3. To create or remove exceptions in the
Group Exception List
table, follow the instructions in "Managing group
4. Click
Apply/Save
to save and apply the settings.
The fields on this page are defined below.
Field Name
Description
Multicast
Precedence
Select whether IGMP packets are given priority handling and at what level. Options are:
l
Enable:
IGMP packets are prioritized using the multicast precedence value. The lower the
multicast precedence value, the higher that IGMP packets will be placed in the queue.
l
Disable:
IGMP packets are not prioritized. This is the default.
Multicast Strict
Grouping
Enforcement
Select whether to enforce strict key management rules. Options are
Enable
and
Disable
. The default is
Disable
.
IGMP Configuration
and
MLD Configuration
sections
Default Version
Enter the supported IGMP version. Options are
1
-
3
.
Query Interval
Enter the interval at which the multicast router sends a query messages to hosts, expressed in seconds.
If you enter a number below
128
, the value is used directly. If you enter a number above
128
, it is
interpreted as an exponent and mantissa.
Query Response
Interval
Upon receiving a query packet, a host begins counting down seconds, from a random number. When the timer
expires, the host sends its report.
Enter the maximum number of seconds that a host can pick to count down from. The value must be greater
than the
Query Interval
.
Last Member Query
Interval
(
Applies to MLD configuration only
) Enter the maximum response time within which the host must respond to
the Out of Sequence query from the router. The default is
10s
.
IGMP uses this value when the router receives an IGMPv2 Leave report indicating at least one host wants to
leave the group. Upon receiving the Leave report, the router verifies whether the interface is configured for
IGMP Immediate Leave. If not, the router sends the out-of-sequence query.
Robustness Value
Enter the value representing the complexity of the query. The greater the value, the more robust the query.
Options are
2
-
7
.
Maximum Multicast
Groups
Enter the maximum number of groups allowed.
Maximum Multicast
Data Sources (for
IGMPv3)
Enter the maximum number of data sources allowed. Options are
1
-
24
.
Maximum Multicast
Group Members
Enter the maximum number of multicast groups that can be joined on a port or group of ports.
Fast Leave Enable
This option is
enabled
by default. To
prevent
the IGMP proxy from removing group members immediately
without sending a query, click this checkbox to clear it.
