Multicast TTL Scoping

From: Ruhann (groupstudy@ru.co.za)
Date: Fri Feb 13 2009 - 05:59:14 ARST


Hello poeples

When a question is worded as follow:

"In order to prevent multicast feeds from looping around the network,
configure R1 so that it does not send any multicast traffic out its
FastEthernet interface that has a TTL of less than 13."

My understanding of TTL scoping with regard to the interface is
  If the Packet TTL >= Interface TTL, then the packet is forwarded
  If the Packet TTL < Interface TTL, then the packet is dropped

But I cant make sense of this question.
Should I configure the Multicast TTL Threshold in the interface to be 12 or
13?

Your assistance would be appreciated
<ruhann>

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