Enabling IPv6 PIM Sparse

IPv6 PIM must be enabled globally and IPv6 PIM Sparse Mode (PIM SM) enabled locally on specific interfaces.

By default, IPv6 PIM SM is disabled. To enable IPv6 PIM SM:

  • Enable IPv6 PIM globally.
  • Configure the IPv6 interfaces that will use IPv6 PIM SM.
  • Enable IPv6 PIM SM locally on the individual interfaces connected to the IPv6 PIM Sparse network.

The steps in this task do not configure the device as a candidate IPv6 PIM Sparse Bootstrap Router (BSR) and candidate Rendezvous Point (RP). You can configure a device as a PIM Sparse device without configuring the device as a candidate BSR and RP. If you do configure the device as a candidate BSR or RP, it is recommended that you configure the device as both a BSR and an RP.

  1. Enter global configuration mode.
    device# configure terminal
  2. Globally enables IPv6 PIM.
    device(config)# ipv6 router pim
  3. Exit to global configuration mode to enter the interface.
    device(config-ipv6-pim-router)# exit
  4. Enter interface configuration mode.
    device(config)# interface ethernet 1/2/2
    This step configures Ethernet interface 1/2/2 and this interface is to run IPv6 PIM SM.
  5. Enter the IPv6 address for the interface.
    device(config-if-e10000-1/2/2)# ipv6 address a000:1111::1/64
  6. Configure IPv6 PIM SM on the interface.
    device(config-if-e10000-1/2/2)# ipv6 pim-sparse
  7. (Optional) Specify that the interface is on the border of the IPv6PIM Sparse domain.
    device(config-if-e10000-1/2/2)# ipv6 pim border

The following example enables IPv6 PIM globally andIPv6 PIM SM on Ethernet interface 1/2/2 which is on the border of the IPv6 PIM Sparse domain.

device# configure terminal
device(config)# ipv6 router pim
device(config-ipv6-pim-router)# exit
device(config)# interface ethernet 1/2/2
device(config-if-e10000-1/2/2)# ipv6 address a000:1111::1/64
device(config-if-e10000-1/2/2)# ipv6 pim-sparse
device(config-if-e10000-1/2/2)# ipv6 pim border