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MLD snooping configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6<br />

Configuring the hardware and software resource limits . . . . . . . 7<br />

Configuring the global MLD mode . . . . . . . . . . . . . . . . . . . . . . . . 8<br />

Modifying the age interval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8<br />

Modifying the query interval (active MLD snooping<br />

mode only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8<br />

Configuring the global MLD version . . . . . . . . . . . . . . . . . . . . . . . 9<br />

Configuring report control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9<br />

Modifying the wait time before stopping traffic when<br />

receiving a leave message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9<br />

Modifying the multicast cache (mcache) aging time. . . . . . . . . 10<br />

Disabling error and warning messages . . . . . . . . . . . . . . . . . . .10<br />

Configuring the MLD mode for a VLAN. . . . . . . . . . . . . . . . . . . . 10<br />

Disabling MLD snooping for the VLAN . . . . . . . . . . . . . . . . . . . .11<br />

Configuring the MLD version for the VLAN. . . . . . . . . . . . . . . . .11<br />

Configuring the MLD version for individual ports . . . . . . . . . . .11<br />

Configuring static groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11<br />

Configuring static router ports . . . . . . . . . . . . . . . . . . . . . . . . . .12<br />

Disabling static group proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . .12<br />

Enabling MLDv2 membership tracking and fast leave<br />

for the VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12<br />

Configuring fast leave for MLDv1 . . . . . . . . . . . . . . . . . . . . . . . .13<br />

Enabling fast convergence . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13<br />

Displaying MLD snooping information . . . . . . . . . . . . . . . . . . . . . . . . 14<br />

Clearing MLD snooping counters and mcache . . . . . . . . . . . . . . . . .19<br />

PIM6 SM traffic snooping overview . . . . . . . . . . . . . . . . . . . . . . . . . .20<br />

Application examples of PIM6 SM traffic snooping. . . . . . . . . .20<br />

Configuration notes and limitations for<br />

PIM6 SM snooping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22<br />

PIM6 SM snooping configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . .23<br />

Enabling or disabling PIM6 SM snooping. . . . . . . . . . . . . . . . . .23<br />

Enabling PIM6 SM snooping on a VLAN. . . . . . . . . . . . . . . . . . . 24<br />

Disabling PIM6 SM snooping on a VLAN . . . . . . . . . . . . . . . . . . 24<br />

PIM6 SM snooping show commands . . . . . . . . . . . . . . . . . . . . . . . . 24<br />

Displaying PIM6 SM snooping information . . . . . . . . . . . . . . . .25<br />

Displaying PIM6 SM snooping for a VLAN . . . . . . . . . . . . . . . . .25<br />

Chapter 2<br />

IPv4 Multicast Traffic Reduction<br />

IGMP snooping overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27<br />

Queriers and non-queriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28<br />

VLAN-specific configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . .29<br />

Tracking and fast leave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29<br />

Support for IGMP snooping and Layer 3 multicast routing<br />

together on the same device . . . . . . . . . . . . . . . . . . . . . . . . . . .29<br />

Forwarding mechanism in hardware . . . . . . . . . . . . . . . . . . . . .30<br />

Hardware resources for IGMP/PIM-SM snooping . . . . . . . . . . .30<br />

Configuration notes and feature limitations<br />

for IGMP snooping and Layer 3 multicast routing . . . . . . . . . . . 31<br />

vi<br />

FastIron Ethernet Switch IP Multicast Configuration Guide<br />

53-1002638-02

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