Viewing PMRI Status and Disabling PMRI

Passive multicast route insertion (PMRI) is enabled by default. In some situations you may need to view the PMRI status and use the hardware-drop feature to disable PMRI.

After determining that PMRI is enabled, you must enable PIM routing and then disable PMRI using the hardware-drop feature syntax.

  1. Use the show ip pim sparse command to display the status of PMRI. 
    device> show ip pim sparse

Global PIM Sparse Mode Settings
  Maximum Mcache         : 16384       Current Count              : 3
  Hello interval         : 30          Neighbor timeout           : 105
  Join/Prune interval    : 60          Inactivity interval        : 180
  Hardware Drop Enabled  : Yes         Prune Wait Interval        : 3
  Bootstrap Msg interval : 60          Candidate-RP Msg interval  : 60
  Register Suppress Time : 60          Register Probe Time        : 10
  Register Stop Delay    : 10
  SSM Enabled            : Yes         SPT Threshold              : 1
  SSM Group Range        : 232.0.0.0/8
  Route Precedence       : uc-non-default uc-default mc-non-default mc-default
  Slow Path Disable All		: Yes									Slow Path Enable SSM 						:Yes
		Slow Path Filter Acl : acl
    In the output, you can see that the hardware-drop is enabled meaning that PMRI is enabled.
  2. Enter global configuration mode. 
    device# configure terminal
  3. Configure PIM. 
    device(config)# router pim
  4. Disable PMRI, using the hardware-drop-disable command. 
    device(config-pim-router)# hardware-drop-disable

The following example displays the status of PMRI and then disables PMRI using the hardware-drop feature. 

device# show ip pim sparse
device# configure terminal
device(config)# router pim
device(config-pim-router)# hardware-drop-disable
Parent topic: IPv4 Multicast Protocols