Enabling and disabling PIM SNMP traps


router pim trap [[all] | neighbor-loss | hardware-mrt-full | software-mrt-full
no router pim trap [[all] | neighbor-loss | hardware-mrt-full | software-mrt-full]

Executed in the PIM context, this command enables and disables these PIM SNMP traps:


Enable/disable all PIM notification traps.


Enable/disable the notification trap sent when the timer for a multicast router neighbor expires and the switch has no other multicast router neighbors on the same VLAN with a lower IP address.

Default: Disabled


Enable/disable notification trap when the hardware MRT is full (2046 active flows.) In this state, any additional flows are handled by the software MRT, which increases processing time for the affected flows.

Default: Disabled


Enable/disable notification trap when the routing switch's software MRT is full (routing resources for active flows are exhausted.)

Default: Disabled


In this state, the routing switch does not accept any additional flows.

Configuring PIM in the Global and PIM context

In Bandwidth conservation in switches with PIM-DM state-refresh, the "#1" routing switch is directly connected to the multicast sources for the network. For this example, suppose that you are choosing the following:

  • Reduce the state-refresh time from the default 60 seconds to 30 seconds. (The routing switch transmits state-refresh packets only if it is directly connected to the multicast source.)

  • Configure an SNMP trap to notify your network management station if the routing switch's hardware multicast routing table becomes filled to the maximum of 2046 active flows.

To configure global-level PIM operation for the " #1" routing switch, you would use the commands shown in the following figure.

Configuring PIM-DM on a routing switch at the global level

After configuring the global-level PIM operation on a routing switch, go to the device's VLAN context level for each VLAN you want to include in your multicast routing domain. For more information, see Viewing the current configuration for the specified VLAN (PIM interface).