Configuring Timers; Enabling Igmp Fast Leave Processing - Huawei Quidway S3100 Series Operation Manual

Operation Manual – IGMP Snooping
Quidway S3100 Series Ethernet Switches

1.2.2 Configuring Timers

This configuration task is to manually configure the aging time of the router port, the
aging time of the multicast member ports, and the query response timeout time.
If the switch receives no general query message from a router within the aging
time of the router port, the switch removes the router port from the port member
lists of all MAC multicast groups.
If the switch receives no IGMP report message within the aging time of a member
port, it transmits a group-specific query message to the port and starts the query
response timer of the IP multicast group.
If the switch receives no IGMP report message within the query response timeout
time, it removes the port from the member port list of the multicast group.
Table 1-5 Configure timers
Operation
Enter system view
Configure
aging time of the
router port
Configure
query
timeout time
Configure
aging
multicast member
ports

1.2.3 Enabling IGMP Fast Leave Processing

Normally, when receiving an IGMP Leave message, IGMP Snooping does not
immediately remove the port from the multicast group, but sends a group-specific query
message. If no response is received in a given period, it then removes the port from the
multicast group.
If IGMP fast leave processing is enabled, when receiving an IGMP Leave message,
IGMP Snooping immediately removes the port from the multicast group. When a port
has only one user, enabling IGMP fast leave processing on the port can save
bandwidth.
system-view
the
igmp-snooping
seconds
the
igmp-snooping max-response-time
response
seconds
the
time of igmp-snooping
seconds
Huawei Technologies Proprietary
Chapter 1 IGMP Snooping Configuration
Command
router-aging-time
host-aging-time
1-6
Description
—
Optional
By default, the aging
time of the router
port is 105 seconds.
Optional
By default, the query
response timeout
time is 10 seconds.
Optional
By default, the aging
time of multicast
member ports is 260
seconds.