Brocade Communications Systems Brocate Ethernet Access Switch 6910 - Manual (Page 508)

458 Brocade 6910 Ethernet Access Switch Configuration Guide
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IGMP Snooping
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Example
Console(config)#ip igmp snooping vlan 1 last-memb-query-count 7
Console(config)#
ip igmp snooping vlan last-memb-query-intvl
This command configures the last-member-query interval. Use the no form to restore the default.
Syntax
ip igmp snooping vlan vlan-id last-memb-query-intvl interval
no ip igmp snooping vlan vlan-id last-memb-query-intvl
vlan-id - VLAN ID (Range: 1-4093)
interval - The interval to wait for a response to a group-specific or
group-and-source-specific query message. (Range: 1-31744 tenths of a second)
Default Setting
10 (1 second)
Command Mode
Global Configuration
Command Usage
• When a multicast host leaves a group, it sends an IGMP leave message. When the leave
message is received by the switch, it checks to see if this host is the last to leave the group by
sending out an IGMP group-specific or group-and-source-specific query message, and starts a
timer. If no reports are received before the timer expires, the group record is deleted, and a
report is sent to the upstream multicast router.
• A reduced value will result in reduced time to detect the loss of the last member of a group or
source, but may generate more bursty traffic.
• This command will take effect only if IGMP snooping proxy reporting is enabled ( page 450 ).
Example
Console(config)#ip igmp snooping vlan 1 last-memb-query-intvl 700
Console(config)#
ip igmp snooping vlan mrd
This command enables sending of multicast router solicitation messages. Use the no form to
disable these messages.
Syntax
[no] ip igmp snooping vlan vlan-id mrd
vlan-id - VLAN ID (Range: 1-4093)
Default Setting
Enabled