Example for Configuring PIM-SM

Owned by Tracy Yang
Mar 19, 2024
4 min read


Networking Requirements

In the following topology, a multicast Source sends the multicast traffic to the Receiver through Switch C, Switch B and Switch A.

  • Configure ge-1/1/2 as an IGMP interface on Switch A which is connected to the Receiver.
  • In this example, the static route will be used to make the switches in PIM-SM domain can communicate with each other. 

Figure 1. PIM-SM Multicast Routing Configuration

Procedure

Switch A

Step1        Configure VLAN.

admin@XorPlus# set vlans vlan-id 2 l3-interface vlan-2
admin@XorPlus# set vlans vlan-id 3 l3-interface vlan-3
admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching native-vlan-id 2
admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching native-vlan-id 3
admin@XorPlus# set l3-interface vlan-interface vlan-2 address 10.10.1.1 prefix-length 24
admin@XorPlus# set l3-interface vlan-interface vlan-3 address 10.10.3.1 prefix-length 24

Step2        Enable IP routing.

admin@Xorplus# set ip routing enable true

Step3       Enable IGMP on the L3 VLAN interfaces of the PIM router connected to the receiver.

admin@XorPlus# set protocols igmp interface vlan-3

Step4       Enable PIM-SM on the L3 VLAN interfaces.

admin@XorPlus# set protocols pim interface vlan-2 sm
admin@XorPlus# set protocols pim interface vlan-3 sm

Step5       Configure the VLAN interface vlan-2 on Switch A as the static RP.               

admin@XorPlus# set protocols pim rp 10.10.1.1 group 224.0.0.0/8

Step6       Configure static routes to other switches.

admin@XorPlus# set protocols static route 10.10.2.0/24 next-hop 10.10.1.2
admin@XorPlus# set protocols static route 10.10.4.0/24 next-hop 10.10.1.2

Step7       Commit the configurations.

admin@Xorplus# commit

Step8       Verify the configuration.

  • Run run show pim interface command to show information about all interfaces on which PIM-SM is enabled.
admin@XorPlus# run show pim interface
Interface         State          Address  PIM Nbrs           PIM DR  FHR IfChannels
vlan-2              up       10.10.1.1         1            local    0          1
vlan-3              up       10.10.3.1         2            local    0          0
  • Run run show igmp interface command to show IGMP interface information.
admin@XorPlus# run show igmp interface
Interface State Querier Timeout Version Groups
------------ -------- --------------- --------- --------- --------
vlan-2 DISABLED 10.10.1.1 None 2 0
vlan-3 UP 10.10.3.1 None 2 3 

Interface         State          Address  V  Querier  Query Timer    Uptime
vlan-2              up       10.10.1.1    3    local     00:00:40  02:13:12
vlan-3             mtrc      10.10.3.1    3    other     --:--:--  00:36:29

Switch B

Step1      Configure VLAN.

admin@XorPlus# set vlans vlan-id 2 l3-interface vlan-2
admin@XorPlus# set vlans vlan-id 3 l3-interface vlan-3
admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching native-vlan-id 2
admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching native-vlan-id 3
admin@XorPlus# set l3-interface vlan-interface vlan-2 address 10.10.1.2 prefix-length 24
admin@XorPlus# set l3-interface vlan-interface vlan-3 address 10.10.2.2 prefix-length 24
admin@XorPlus# set l3-interface loopback lo address 7.6.5.3 prefix-length 32

Step2        Enable IP routing.

admin@Xorplus# set ip routing enable true

Step3       Enable PIM-SM on the L3 VLAN interfaces.

admin@XorPlus# set protocols pim interface vlan-2 sm
admin@XorPlus# set protocols pim interface vlan-3 sm

Step4       Configure the VLAN interface vlan-2 on Switch A as the static RP.               

admin@XorPlus# set protocols pim rp 10.10.1.1 group 224.0.0.0/8

Step5      Commit the configuration.

admin@Xorplus# commit


Switch C

Step1      Configure VLAN.

admin@XorPlus# set vlans vlan-id 2 l3-interface vlan-2
admin@XorPlus# set vlans vlan-id 3 l3-interface vlan-3
admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching native-vlan-id 2
admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching native-vlan-id 3
admin@XorPlus# set l3-interface vlan-interface vlan-2 address 10.10.2.1 prefix-length 24
admin@XorPlus# set l3-interface vlan-interface vlan-3 address 10.10.4.1 prefix-length 24

Step2        Enable IP routing.

admin@Xorplus# set ip routing enable true

Step3       Enable PIM-SM on the L3 VLAN interfaces.

admin@XorPlus# set protocols pim interface vlan-2 sm
admin@XorPlus# set protocols pim interface vlan-3 sm

Step4       Configure the VLAN interface vlan-2 on Switch A as the static RP.               

admin@XorPlus# set protocols pim rp 10.10.1.1 group 224.0.0.0/8

Step5      Configure static routes to other switches.

admin@XorPlus#set protocols static route 10.10.1.0/24 next-hop 10.10.2.2
admin@XorPlus#set protocols static route 10.10.3.0/24 next-hop 10.10.2.2

Step6      Commit the configuration.

admin@Xorplus# commit

Step7      Verify the configuration.

  • Run run show pim interface command to show information about all interfaces on which PIM-SM is enabled.
admin@XorPlus# run show pim interface
Interface         State          Address  PIM Nbrs           PIM DR  FHR IfChannels
vlan-2               up       10.10.2.1         0            local    0          1
vlan-3               up       10.10.4.1         0            local    0          0

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