User's Manual

SMARTRG INC. PROPRIETARY AND CONFIDENTIAL. ALL RIGHTS RESERVED. COPYRIGHT © 2017 90
2. In the Multicast Precedence field, select whether IGMP packets are given priority handling and at what level. Options are:
l Disable: IGMP packets are not prioritized. This is the default.
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.
3. In the Multicast Strict Grouping Enforcement field, select whether grouping is stricly enforced. Options are Disable and
Enable. The default is Disable.
4. Modify the other fields as needed, using the information in the table below. The same fields are provided for both IGMP and
MLD configuration.
5. To add an IPaddress to a group exception list, type the IP address and mask/mask bits in the appropriate fields and click Add.
6. Click Apply/Save to commit your changes.
7. To remove an IP addresses from a group exception list, click the Remove checkbox next to the address and then click
Remove Checked Entries.
The fields on this page are explained in the following table.
Field Name Description
Default Version Enter the supported IGMP version. Options are:
1
-
3
.
Query Interval 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
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 ran-
dom 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. If using IGMP v1, this value is
fixed at 10 seconds.
Last Member Query
Interval
Enter the maximum response time within which the host must respond to the Out
of Sequence query from the router. The default is
1000ms
.
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
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 Select whether the IGMP proxy removes group members immediately without
sending a query. Options are: