H3C S7500 Series Ethernet Switches Command Manual

Table Of Contents
Command Manual – Multicast
H3C S7500 Series Ethernet Switches Chapter 5
IGMP Configuration Commands
5-10
value as 1 second). If other hosts interested in the specified group receive the IGMP
query message from the IGMP query router, they will send back the IGMP Membership
Report message within the specified maximum response time interval. If it receives the
IGMP Membership Report message within the defined period (equal to robust-value ×
seconds), the IGMP query router continues to maintain the membership of this group.
When receiving no IGMP Membership Report message from any host within the
defined period, the IGMP query router considers it as timeout and stops membership
maintenance for the group.
This command is only available on the IGMP query router running IGMPv2. For the
host running IGMPv1, this command cannot take effect because the host does not
send any IGMP leave message when it leaves a group.
Related commands: igmp robust-count, display igmp interface.
Examples
# Set the query interval on VLAN-interface10 to 3 seconds.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] interface Vlan-interface 10
[H3C-Vlan-interface10] igmp lastmember-queryinterval 3
5.1.10 igmp max-response-time
Syntax
igmp max-response-time seconds
undo igmp max-response-time
View
VLAN interface view
Parameters
seconds: Maximum response time in the IGMP query messages in second in the range
of 1 to 25. By default, the value is 10 seconds.
Description
Use the igmp max-response-time command to configure the maximum response
time contained in the IGMP query messages.
Use the undo igmp max-response-time command to restore the default value.
The maximum query response time is 10 seconds by default.
The maximum query response time determines the period for a router to quickly detect
that there are no more directly connected group members in a LAN.