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3. To create or remove exceptions in the
Group Exception List
table, follow the instructions in
Managing group exception
lists
.
4. Click
Apply/Save
to save and apply the settings.
Field Name
Description
Source Specific Mult-
icast
Select whether a specific multicast source is used. Options are
Disable
and
Enable
. The default is
Dis-
able
.
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 Group-
ing 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 Inter-
val
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.
Robustness Interval
(
Applies to IGMP 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
10
seconds.
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. The default is
25
for IGMP and
10
for MLD.
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.
