Clearing IGMP counters on VLANs
Clearing IGMP counters on VLANs
To clear IGMP snooping on error and traffic counters for all VLANs, enter the clear ip multicast counters command.
device#clear ip multicast counters
Syntax: clear ip multicast counters
Disabling the flooding of unregistered IPv4 multicast frames in an
NOTE
Disabling the flooding of unregistered IPv4 multicast frames in an
To disable the flooding of unregistered IPv4 multicast frames in an
The following example shows the disabling of flooding of unregistered IPv4 multicast frames.
Brocade(config)# ip multicast
PIM SM traffic snooping overview
When multiple PIM sparse routers connect through a
PIM SM traffic snooping requires IGMP snooping to be enabled on the device. IGMP snooping configures the device to listen for IGMP messages. PIM SM traffic snooping provides a finer level of multicast traffic control by configuring the device to listen specifically for PIM SM join and prune messages sent from one PIM SM router to another through the device.
Application examples of PIM SM traffic snooping
Figure 1 shows an example application of the PIM SM traffic snooping feature. In this example, a device is connected through an IP router to a PIM SM group source that is sending traffic for two PIM SM groups. The device also is connected to a receiver for each of the groups.
When PIM SM traffic snooping is enabled, the device starts listening for PIM SM join and prune messages and IGMP group membership reports. Until the device receives a PIM SM join message or an IGMP group membership report, the device forwards IP multicast traffic out all ports. Once the
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