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 IPv6 PIM routing and then disable PMRI using the hardware-drop feature syntax.

You can disable PMRI for a specified VRF if you specify the VRF when enabling IPv6 PIM.

  1. Use the show ipv6 pim sparse command to display the status of PMRI. 
    device> show ipv6 pim sparse 

Global PIM Sparse Mode Settings
  Maximum Mcache         : 4096        Current Count              : 7
  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          Register Suppress interval : 60
  SSM Enabled            : Yes         SPT Threshold              : 1
  SSM Group Range        : ff30::/32
  Route Precedence       : mc-non-default mc-default uc-non-default uc-default
  Embedded RP Enabled    : Yes
    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 IPv6 PIM. 
    device(config)# ipv6 router pim
  4. To disable PMRI, use the hardware-drop-disable command. 
    device(config-ipv6-pim-router)# hardware-drop-disable

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

device# show ipv6 pim sparse
device# configure terminal
device(config)# ipv6 router pim
device(config-ipv6-pim-router)# hardware-drop-disable
Parent topic: Passive Multicast Route Insertion