Igmp Timer Other-Querier-Present - Huawei Quidway S3900 series Command Manual

Command Manual – Multicast Protocol
Quidway S3900 Series Ethernet Switches-Release 1510
In the shared network, that is, a same network segment including multiple hosts and
multicast routers, the query router is responsible for maintaining the IGMP group
membership on the interface. When the IGMP v2 host leaves a group, it sends an
IGMP Leave message. When receiving the IGMP Leave message, IGMP query router
must send the IGMP group-specific query message for specified times (by the
robust-value parameter in the igmp robust-count command, with default value as 2)
in a specified
lastmember-queryinterval command, with default value as 1 second). If other hosts
which are interested in the specific group receive the IGMP group-specific query
packets from the IGMP query router, they will send back the IGMP Membership Report
packets within the specified maximum response time interval. If it receives the IGMP
Membership Report packets within the defined period (equal to robust-value ×
seconds), the IGMP query router continue to maintain the membership of this group.
When receiving no IGMP Membership Report packet from any hosts 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 IGMP v2. For the
host running IGMP v1, this command cannot take effect for the host may not send
IGMP Leave packets when it leaves a group.
Related command: igmp lastmember-queryinterval and display igmp interface.
Example
# Set the robust value of the Vlan-interface 10 to 3.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] interface Vlan-interface 10
[Quidway-Vlan-interface10] igmp robust-count 3

5.1.13 igmp timer other-querier-present

Syntax
igmp timer other-querier-present seconds
undo igmp timer other-querier-present
View
VLAN interface view
Parameter
seconds: Presence time of the IGMP querier, in the range of 1 to 131,070 in seconds.
time interval (by
Huawei Technologies Proprietary
5-13
Chapter 5 IGMP Configuration Commands
the seconds parameter in the igmp