Mulitcast helper map

From: Athaide, Dwayne (DAthaide@eprod.com)
Date: Sat Mar 29 2008 - 17:13:48 ART


I am trying to make sense of Internetwork Expert lab 12 Task 6.2 which
is Multicast Distribution. How is it different from LAB 8 Task 5.5

In lab 12

Why is the "ip multicast helper-address broadcast 225.25.25.25 111"
configured in the Solution guide on the S0/1 port. Shouldn't it be on
the f0/0 port.

Also shouldn't the "ip multicast helper-map 225.25.25.25 129.1.17.255
111 " be on the S1/3 on R3 and the ip directed broadcast on S1/2 of R3.

Please someone help me understand multicast helper-map. The DOC CD is
confusing

thanks



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