Example PIM configuration that uses BSR to find the RP

Example PIM configuration that uses BSR to find the RP

This example shows how to configure a multicast routing network for a network consisting of four FortiGate-500A units (FortiGate-500A_1 to FortiGate-550A_4). A multicast sender is connected to FortiGate-500A_2. FortiGate-500A_2 forwards multicast packets in two directions to reach Receiver 1 and Receiver 2.
The configuration uses a Boot Start Router (BSR) to find the Rendezvous Points (RPs) instead of using static RPs. Under interface configuration, the loopback interface lo0 must join the 236.1.1.1 group (source). This example describes:

  • Commands used in this example
  • Configuration steps
  • Example debug commands

 

PIM network topology using BSR to find the RP

Commands used in this example

 

This example uses CLI commands for the following configuration settings:

  • Adding a loopback interface (lo0)
  • Defining the multicast routing
  • Adding the NAT multicast policy

 

Adding a loopback interface (lo0)

Where required, the following command is used to define a loopback interface named lo0.

config system interface edit lo0

set vdom root

set ip 1.4.50.4 255.255.255.255

set allowaccess ping https ssh snmp http telnet set type loopback

next end

 

Defining the multicast routing

In this example, the following command syntax is used to define multicast routing.

The example uses a Boot Start Router (BSR) to find the Rendezvous Points (RPs) instead of using static RPs. Under interface configuration, the loopback interface lo0 must join the 236.1.1.1 group (source).

config router multicast config interface

edit port6

set pim-mode sparse-mode next

edit port1

set pim-mode sparse-mode next

edit lo0

set pim-mode sparse-mode set rp-candidate enable

config join-group edit 236.1.1.1 next

end

set rp-candidate-priority 1 next

end

set multicast-routing enable config pim-sm-global

set bsr-allow-quick-refresh enable set bsr-candidate enable

set bsr-interface lo0 set bsr-priority 200

end end


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