User Manual UMN:CLI
V5808
421
no ip igmp snooping vlan
VLANS report-suppression
The IGMP snooping report suppression is supported only IGMPv1 and IGMPv2 reports.
In case of an IGMPv3 report, a single membership report can contain the information for
all the groups which a host is interested in. Thus, there is no need for the report
suppression since the number of reports would be generally equal to the number of hosts
only.
9.2.3.5 IGMP Snooping S-Query Report Agency
If IGMP snooping switch receives IGMP group-specific query messages from the
multicast router, it just floods them into all of its ports. The hosts received the group-
specific queries send the report messages according to their IGMP membership status.
However, V5808 is enabled as IGMP snooping S-Query report agency, the group-specific
queries are not sent downstream. When the switch receives a group-specific query, the
switch terminates the query and sends an IGMP report if there is a receiver for the group.
To enable IGMP snooping S-Query Report Agency, use the following command.
ip igmp snooping s-query-report
agency
Enables IGMP snooping s-query-report agency.
To disable IGMP snooping S-Query Report Agency, use the following command.
no ip igmp snooping s-query-
report agency
Disables IGMP snooping s-query-report agency.
9.2.3.6 Explicit Host Tracking
Explicit host tracking is one of the important IGMP snooping features. It has the ability to
build the explicit tracking database by collecting the host information via the membership
reports sent by hosts. This database is used for the immediate leave for IGMPv2 hosts,
the immediate block for IGMPv3 hosts, and IGMP statistics collection.
To enable explicit host tracking, use the following command.
ip igmp snooping explicit-
tracking
Enables explicit host tracking globally.
ip igmp snooping vlan VLANS
explicit-tracking
Enables explicit host tracking on a VLAN.
VLANS: VLAN ID (1-4094)
To disable explicit host tracking, use the following command.
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