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Configuring a PIM RPF Routing Table (Optional)

By default, PIM uses inet.0 as its reverse-path forwarding (RPF) routing table group. PIM uses an RPF routing table group to resolve its RPF neighbor for a particular multicast source address and for the RP address. PIM can optionally use inet.2 as its RPF routing table group. The inet.2 routing table is organized more efficiently for RPF checks.

Once configured, the RPF routing table must be applied to PIM as a routing table group.

To configure and apply a PIM RPF routing table, perform these steps on each Services Router in the network:

  1. Navigate to the top of the configuration hierarchy in either the J-Web or CLI configuration editor.
  2. Perform the configuration tasks described in Table 116.
  3. If you are finished configuring the router, commit the configuration.
  4. To check the configuration, see Verifying a Multicast Configuration.

Table 116: Configuring a PIM RPF Routing Table

Task

J-Web Configuration Editor

CLI Configuration Editor

Navigate to the Routing options level in the configuration hierarchy.

In the configuration editor hierarchy, select Routing options.

From the top of the configuration hierarchy, enter

edit routing-options

Configure a new group for the RPF routing table.

Next to Rib groups, click Add new entry.

Enter

edit rib-groups

Configure a name for the new RPF routing table group—for example, multicast-rfp-rib—and use inet.2 for its export routing table.
  1. In the Ribgroup name box, type multicast-rfp-rib.
  2. In the Export rib box, type inet.2.

Enter

set multicast-rpf-rib export-rib inet.2

Configure the new RPF routing table group to use inet.2 for its import routing table.
  1. Click Add new entry next to Import rib.
  2. In the Value box, type inet.2.
  3. Click OK three times.

Enter

set multicast-rpf-rib import-rib inet.2

Navigate to the Rib group level in the configuration hierarchy.

In the configuration editor hierarchy, select Protocols>Pim>Rib group.

From the top of the configuration hierarchy, enter

edit protocols pim

Apply the new RPF routing table to PIM.
  1. In the Inet box, type the name of the RPF routing table group—multicast-rpf-rib.
  2. Click OK three times.

Enter

set rib-group multicast-rpf-rib

Create a routing table group for the interface routes.
  1. Navigate to the Routing options level in the configuration hierarchy.
  2. Next to Rib groups, click Add new entry.

From the top of the configuration hierarchy, enter

edit routing-options rib-groups.

Configure a name for the RPF routing table group—for example, if-rib—and use inet.2 and inet.0 for its import routing tables.
  1. In the Ribgroup name box, type if-rib.
  2. Click Add new entry next to Import rib.
  3. In the Value box, type inet.2 inet.0.
  4. Click OK twice.

Enter

set if-rib import-rib inet.2

set if-rib import-rib inet.0

Add the new interface routing table group to the interface routes.
  1. On the Routing options page, select Interface routes>Rib group.
  2. In the Inet box, type if-rib.
  3. Click OK.

From the top of the configuration hierarchy, enter

edit routing-options interface-routes

set rib-group inet if-rib

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