HP 6120XG HP ProCurve Series 6120 Blade Switches Multicast and Routing Guide - Page 43
Configuring Delayed Group Flush
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Multimedia Traffic Control with IP Multicast (IGMP) How IGMP Operates Configuring Delayed Group Flush When enabled, this feature continues to filter IGMP groups for a specified additional period of time after IGMP leaves have been sent. The delay in flushing the group filter prevents unregistered traffic from being forwarded by the server during the delay period. In practice, this is rarely necessary on the switches covered in this guide, which support data-driven IGMP. (DataDriven IGMP, which is enabled by default, prunes off any unregistered IGMP streams detected on the switch.) Syntax: igmp delayed-flush < time-period > Where leaves have been sent for IGMP groups, enables the switch to continue to flush the groups for a specified period of time. This command is applied globally to all IGMP-configured VLANs on the switch. Range: 0 - 255; Default: Disabled (0). Syntax: show igmp delayed-flush Displays the current igmp delayed-flush setting. 2-17