I have an issue with my PIM-SSM multicast configuration using ISR4431s. I am wanting to forward broadcast data from an application from one VLAN in on the multicast source to another VLAN on a multicast router on a small network. The method I am using is PIM-SSM. I have a multicast source R1, a multicast transition router R2, and a multicast receiver, the R3 device. Any insight into why the broadcast data is not forwarding is welcome. Here is the topology:
R1—R2—R3
R1 Config (Multicast Source):
hostname R1
ip multicast-routing distributed
ip pim spt-threshold infinity
ip pim ssm default
no ip igmp snooping
vtp mode transparent
spanning-tree extend system-id
vlan internal allocation policy ascending
vlan 100
interface GigabitEthernet0/0/0
ip address 10.194.234.226 255.255.255.252
ip nat outside
ip pim sparse-dense-mode
interface GigabitEthernet0/1/0
switchport access vlan 100
switchport mode access
interface Vlan100
ip address 10.1.1.1 255.255.255.0
ip nat inside
ip pim sparse-dense-mode
ip multicast helper-map broadcast 232.1.1.1 bcast-to-mcast ttl 50
ip forward-protocol udp 3205
ip nat inside source static udp 10.1.1.71 3205 10.194.234.226 3205 extendable
ip route 0.0.0.0 0.0.0.0 G0/0/0
ip access-list extended bcast-to-mcast permit udp any any eq 3205
end
R2 Config (Multicast Transition Router):
hostname R2
ip multicast-routing distributed
ip pim spt-threshold infinity
vtp mode transparent
spanning-tree extend system-id
vlan internal allocation policy ascending
interface GigabitEthernet0/0/0
ip address 10.194.234.225 255.255.255.252
ip pim sparse-dense-mode
no shutdown
negotiation auto
interface GigabitEthernet0/0/1
ip address 10.156.51.225 255.255.255.252
ip pim sparse-dense-mode
no shutdown
negotiation auto
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/0
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/1
end
R3 Config (Multicast Receiver, NOTE: 192.142.1.99 is not the device that is receiving the data. Other devices on vlan 600 need the data):
hostname R3
ip multicast-routing distributed
ip pim spt-threshold infinity
ip pim ssm default
no ip igmp snooping
vtp mode transparent
spanning-tree extend system-id
vlan internal allocation policy ascending
vlan 600
interface GigabitEthernet0/0/0
ip address 10.156.51.226 255.255.255.252
ip pim sparse-dense-mode
ip multicast helper-map 232.1.1.1 192.142.1.255 bcast-to-mcast
ip igmp version 3
negotiation auto
interface GigabitEthernet0/1/0
switchport access vlan 600
switchport mode access
interface GigabitEthernet0/1/1
switchport access vlan 600
switchport mode access
interface Vlan600
ip address 192.142.1.1 255.255.255.0
ip broadcast-address 192.142.1.255
ip directed-broadcast
ip pim sparse-dense-mode
ip igmp join-group 232.1.1.1 source 10.194.234.226
ip igmp version 3
ip forward-protocol udp 3205
ip nat inside source static tcp 192.142.1.99 61000 10.156.51.226 61000 extendable
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/0
ip access-list extended bcast-to-mcast permit udp any any eq 3205
end
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