From: Tom Rogers (cccie71@yahoo.com)
Date: Thu Jun 24 2004 - 23:05:32 GMT-3
Hi guys,
I am trying to get a handle on this TTL scoping... but some how lacking some very fundamental. I came across this scenario, and have gone numerous times but cannot understand it...
"Recently you have noticed suboptimal forwarding of multicast feeds throughout your network due to problems in your unicast routing. In order to prevent multicast feeds from looping around the network, configure R1 so that it does not send any multicast traffic out interface E0/0 that has TTL of less than 13"
Their answer is
int e0/0
ip multicast ttl-threhold 12
My problem is, should it it be 14. I read the Williamson Page 44 chapter 2 Multicast Basics
It says if TTL of 24 is coming into the router and it wants to go out via int OUT, then OUT interface should have a lowere TTL than what ever is coming in. SO it should 23 or less.
But if want Multicast not to go out then increase the TTL threshold on OUT interface hiigher than 24
Having said... What am I thinkning wrong that answer in IE should 14 ???
Thanks
Tom
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This archive was generated by hypermail 2.1.4 : Sat Jul 03 2004 - 19:40:50 GMT-3