Download complete user manual (PDF). - Brocade
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1<br />
PIM6 SM traffic snooping overview<br />
<strong>Brocade</strong>#clear ipv6 multicast mcache<br />
Syntax: clear ipv6 multicast mcache<br />
Clearing the mcache on a specific VLAN<br />
To clear the mcache on a specific VLAN, enter the clear ipv6 multicast vlan num mcache<br />
command.<br />
<strong>Brocade</strong>#clear ipv6 multicast vlan 10 mcache<br />
Syntax: clear ipv6 multicast vlan vlan-id mcache<br />
The vlan-id parameter specifies the specific VLAN from which to clear the cache.<br />
Clearing traffic counters on a specific VLAN<br />
To clear the traffic counters on a specific VLAN, enter the clear ipv6 multicast vlan num traffic<br />
command.<br />
<strong>Brocade</strong>#clear ipv6 multicast vlan 10 traffic<br />
Syntax: clear ipv6 multicast vlan vlan-id traffic<br />
The vlan-id parameter specifies the specific VLAN from which to clear the traffic counters.<br />
PIM6 SM traffic snooping overview<br />
When multiple PIM sparse routers connect through a snooping-enabled device, the <strong>Brocade</strong> device<br />
always forwards multicast traffic to these routers. For example, PIM sparse routers R1, R2, and R3<br />
connect through a device. Assume R2 needs traffic, and R1 sends it to the device, which forwards<br />
it to both R2 and R3, even though R3 does not need it. A PIM6 SM snooping-enabled device listens<br />
to join and prune messages exchanged by PIM sparse routers, and stops traffic to the router that<br />
sends prune messages. This allows the device to forward the data stream to R2 only.<br />
PIM6 SM traffic snooping requires MLD snooping to be enabled on the device. MLD snooping<br />
configures the device to listen for MLD messages. PIM6 SM traffic snooping provides a finer level<br />
of multicast traffic control by configuring the device to listen specifically for PIM6 SM join and<br />
prune messages sent from one PIM6 SM router to another through the device.<br />
Application examples of PIM6 SM traffic snooping<br />
Figure 1 shows an example application of the PIM6 SM traffic snooping feature. In this example, a<br />
device is connected through an IP router to a PIM6 SM group source that is sending traffic for two<br />
PIM6 SM groups. The device also is connected to a receiver for each of the groups.<br />
20 FastIron Ethernet Switch IP Multicast Configuration Guide<br />
53-1002638-02
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