Basic PIM settings

You can specify basic PIM settings in a CPE template or on the device. When you specify PIM settings in a CPE template, such settings are automatically propagated to all devices that are using the template.

To modify the basic PIM settings:

1. Specify basic PIM settings in one of the following ways:
   • If you want to edit the basic PIM settings in a CPE template, go to the SD-WAN → CPE templates menu section, click the template and in the displayed settings area, select the Multicast → General settings tab.
   • If you want to edit the basic PIM settings on a CPE device, go to the SD-WAN → CPE menu section, click the device and in the displayed settings area, select the Multicast → General settings tab.

   Basic PIM settings are displayed.

2. In the Multicast drop-down list, select Enabled. By default, the Disabled option is selected.
3. Specify the rendezvous point for multicast traffic packet sources and clients that are connected to the CPE device:
   1. Under RP IP, click + Add.
   2. In the displayed field, enter the IPv4 address of the rendezvous point.
   3. If you want to specify a multicast group associated with the rendezvous point, under RP group, enter the IPv4 prefix of your multicast group. Each rendezvous point can be associated with a dedicated multicast group.

   The rendezvous point is specified and displayed in the RP IP and RP group sections. You can specify multiple rendezvous points; to delete a rendezvous point, click the delete icon next to it.

4. In the RP keepalive timer (sec.) field, enter the lifetime in seconds of traffic streams between the source and the multicast group (S,G). The countdown is reset if the CPE device receives a register packet. Range of values: 31 to 60,000. The default setting is 185.
5. If you want to filter multicast traffic packets with the specified source IPv4 addresses on the CPE device, in the PIM register accept list drop-down list, select a previously created prefix list.
6. If a CPE device is on the last hop and you want to prevent this device from switching over from the shared tree to the shortest path tree (SPT) when transmitting multicast traffic packets:
   1. Select the SPT switchover check box. This check box is cleared by default.
   2. If you want to deny or allow switchover from the Rendezvous Point Tree (RPT) to the shortest path tree when transmitting traffic packets from multicast groups with specified source IPv4 prefixes, select a previously created prefix list in the SPT prefix list drop-down list. Whether switchover is denied or allowed is determined as follows:
      • If the prefix list allows the IPv4 prefix, switchover does not occur.
      • If the prefix list denies the IPv4 prefix, switchover does occur.
7. If you want to perform ECMP balancing on a CPE device to distribute multicast traffic streams over multiple routes:
   1. Select the ECMP check box. This check box is cleared by default. For ECMP balancing, multiple routes must exist. If ECMP balancing is disabled, traffic is transmitted along one route.
   2. If you want to redistribute the entirety of the traffic between the remaining routes in case one of the multicast interfaces fails, select the ECMP rebalance check box. By default, the check box is cleared, and if one of the multicast interfaces fails, only the traffic that was transmitted through that multicast interface is redistributed.
8. In the PIM join/prune interval (sec.) field, enter the interval in seconds for multicast interfaces to send join/prune packets to PIM peers. Range of values: 60 to 600. The default setting is 60.
9. In the PIM keepalive timer (sec.) field, enter the lifetime in seconds of traffic streams between the source and the multicast group (S,G). The countdown is reset if the CPE device receives a join/prune packet. Range of values: 31 to 60,000. The default setting is 210.
10. If you want to have the CPE device relay traffic packets with specified source IPv4 prefixes from multicast groups upon request from the client (Source Specific Multicast; SSM), in the SSM prefix list drop-down list, select a previously created prefix list.
11. In the RPF lookup mode drop-down list, select a Reverse Path Forwarding (RPF) lookup mode on the CPE device:
    • longer-prefix
    • lower-distance
    • mrib-only
    • mrib-then-urib (default)
    • urib-only
12. If you want to add a static IPv4 route to the multicast routing table of the CPE device:
    1. Under Static multicast route, click + Add.
    2. In the IP destination field, enter the destination IPv4 address of the static route.
    3. In the Type drop-down list, select the source type of the static route:
       • Address is an IPv4 address. If you select this value, in the Nexthop field, enter the source IPv4 address and prefix of the static route.
       • Interface is a previously created network interface. If you select this value, from the Nexthop drop-down list, select the source network interface of the static route.
    4. If necessary, in the Distance field, enter the metric of the static route. Range of values: 1 to 255.

    The static route is added and displayed under Static multicast route. You can add multiple static routes; to delete a static route, click the delete icon next to it.

13. In the upper part of the settings area, click Save to save the settings of the CPE template or device.