Multicast-Helper MAP

Hi Experts,
 
I am trying to understand Mutlicast-helper map:-
 
Fa0/0--R3--S0/1-----S0/0--R5--S0/1-------S0/0--R2--Fa0/0
 
Pim is enabled on between serial interface along with R2 Fa0/0.
R2 Fa0/0 has joined a IGMP group 224.1.1.1
I can ping it from R3
 
 
Host Connected to R3 Fa0/0 supports only broadcast, if I want to use UDP port 2000 to support receive and send multicast traffic what can we do.
 
I tried to break it flow wise:-

1)destination as Broadcast from R3 Fa0/0 connected hosts: -
2)destination as multicast from R2 Fa0/0 connected hosts: -

for case 1:-
we can Convert the broadcast traffic into multicast on R3 ingress interface (fa0/0) and then convert it into back to Multicast on R2 (Ingress interface Se0/0).

R3#
Int fa 0/0
 ip address 192.168.3.3 255.255.255.0
 ip multicast helper-map broadcast 224.1.1.1 100
!
ip forward-protocol udp 2000
access-list 100 permit udp any any eq 2000
 
R2#
Int se0/0
En ppp
Ip address 192.168.5.2 255.255.255.252
Ip pim sparse-mode
ip multicast helper-map 224.1.2.3 173.20.18.255 100
!
ip forward-protocol udp 2000
access-list 100 permit udp any any eq 2000
 
int fa 0/0
ip directed-broadcast

From above the config broadcast traffic send by host will be delivered to Host connected on R2 Fa0/0 as broadcast.

I am not able to figure out what can be done to take the multicast traffic from R2 connected host and delivered it as broadcast to R3 connected hosts.

Please let me know if its possible, if yes how can I configure that.
 

- Imran

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Received on Thu Oct 07 2010 - 10:15:02 ART