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Usage Guide: Larger robustness; parameter means worse network conditions; smaller
robustness; parameter means better network conditions. The user can set
the robustness parameter according to their network conditions.
Example: Set the robustness parameter for the IGMP Query of VLAN 100 to 3.
Switch(Config)#ip igmp snooping vlan 100 query robustness 3
7.2.2.8 ip igmp snooping vlan query interval
Command: ip igmp snooping vlan <vlan-id> query interval <interval-value>
no ip igmp snooping vlan <vlan-id> query interval
Function: Set the IGMP Query interval for the specified VLAN: the “no ip igmp snooping
vlan <vlan-id> query interval” command restores the default setting.
Parameter: <vlan-id> is the specified VLAN number; <interval-value> is the query
interval, valid range is 1 to 65535.
Command mode: Global Mode
Default: The default interval is 125 seconds.
Example: Set the IGMP Query interval for VLAN 100 to 60 seconds.
Switch(Config)#ip igmp snooping vlan 100 query interval 60
7.2.2.9 ip igmp snooping vlan query max-response-time
Command: ip igmp snooping vlan <vlan-id> query max-response-time <time-value>
no ip igmp snooping vlan <vlan-id> query max-response-time
Function: Set the maximum IGMP Query response time for the specified VLAN: the “no
ip igmp snooping vlan <vlan-id> query max-response-time” command
restores the default setting.
Parameter: <vlan-id> is the specified VLAN number; <time-value> is maximum query
response time, valid range is 10 to 25.
Command mode: Global Mode
Default: The maximum response time is 10 seconds.
Example: Set the maximum IGMP Query response time of VLAN 100 to 12 seconds.
Switch(Config)#ip igmp snooping vlan 100 query max-response-time 12
7.3 IGMP Snooping Example
Scenario 1. IGMP Snooping function