3com S7906E 참조 가이드

 

2-22 

onu-protocol igmp-snooping { host-aging-time  host-aging-time  | leave-aggregation enable | 

max-response-time  max-response-time  | report-aggregation enable  | router-aging-time 

router-aging-time } 

undo  onu-protocol igmp-snooping { host-aging-time | leave-aggregation enable | 

max-response-time | report-aggregation enable | router-aging-time } 

ONU port view 

2: System level 

host-aging-time: Aging time of multicast group member port, in seconds. It is in the range 200 to 1000 

and defaults to 260.  

leave-aggregation enable: Enables IGMP leave message suppression. 

max-response-time: Maximum response time (in seconds) of group-specific queries. It is in the range 1 

to 25 and defaults to 1.  

report-aggregation enable: Enables IGMP report message suppression  

router-aging-time: Router port aging time, in seconds. It is in the range 1 to 1000 and defaults to 105.  

 

The max-response-time keyword in the onu-protocol igmp-snooping command sets the maximum 

response time of the group-specific queries. If the device receives no response at the first timeout of the 

maximum response time, it re-sends group-specific queries. If the device still receives no response 

within the maximum response time, the multicast group on the corresponding ONU is deleted. 

 

 

Use the onu-protocol igmp-snooping command to configure IGMP snooping-related timers and 

IGMP membership report suppression.  

Use the undo onu-protocol igmp-snooping command to restore the defaults.  

By default, IGMP join suppression is disabled, while IGMP leave suppression is enabled.  

Note the following: 

 

The aging time of multicast group member ports determines how often multicast group members 

are refreshed. In an environment where multicast group members change frequently, a relatively 

shorter aging time is required.