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Configuring the IP Protocol Family

PIM supports both IP version 4 (IPv4) and IP version 6 (IPv6) addressing.

IPv6 PIM hello messages are sent to every interface on which you configure family inet6, whether at the PIM level of the hierarchy or not. As a result, if you configure an interface with both family inet at the [edit interface interface-name] hierarchy level and family inet6 at the [edit protocols pim interface interface-name] hierarchy level, PIM sends both IPv4 and IPv6 hellos to that interface.

By default, PIM operates in sparse mode on an interface. If you explicitly configure sparse mode, PIM uses this setting for all IPv6 multicast groups. However, if you configure sparse-dense mode, PIM does not accept IPv6 multicast groups as dense groups and operates in sparse mode over them.

For correct operation of PIM sparse mode, the RP address should be known to a router. The JUNOS IPv6 PIM implementation supports only static RP configuration. Automatic RP announcement and bootstrap routers are not available with IPv6. You configure the static IPv6 RP address in the same way as IPv4 addresses, by including the address statement. However, on a router that is itself the RP, include the address statement at the [edit protocols pim rp local family inet6] or [edit routing-instances routing-instance-name protocols pim rp local family inet6] hierarchy level.

For an overview of logical systems and a detailed example of logical system configuration, see the logical systems chapter of the JUNOS Feature Guide.

The Multicast Listener Discovery (MLD) protocol is automatically enabled on any broadcast interfaces on which you configure PIM and family inet6. For an overview of MLD, see MLD Overview.

To specify whether IPv4 or IPv6 local RP properties apply to the configuration values, include the family statement:




family (inet | inet6);

You can include this statement at the following hierarchy levels:

[edit protocols pim rp local]
[edit routing-instances routing-instance-name protocols pim rp local]

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