Multicast helper-map Scenario

From: Sundar Palaniappan (sundarp@gmail.com)
Date: Thu Mar 10 2005 - 11:28:25 GMT-3


Multicast server is connected to e0 on R1 and sending multicast stream
for group 230.30.30.30. There are users connected to e0 on R3 who need
to receive this traffic. Will the below config forward the traffic to
e0 on R3.

I can only enable multicasting on R1. I am using sparse-mode on e0 of
R1 because there was a previous requirement where I had to configure
pim sparse-mode.

Topology:

e0 R1 s0 -- s0 R2 s1 -- s0 R3 e0

R1:

ip multicast-routing

int e0
ip pim sparse-mode
ip igmp join-group 230.30.30.30
ip directed-broadcast
ip multicast helper-map 230.30.30.30 192.168.3.255 120

access-list 120 permit udp any any

int s0
ip directed-broadcast

R2:

int s0
ip directed-broadcast

int s1
ip directed-broadcast

R3:

int s0
ip diected-broadcast

int e0
ip add 192.168.3.1 255.255.255.0
ip directed-broadcast

TIA,
Sundar Palaniappan



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