[AG-TECH] TTL - Multicast

Robert Olson olson at mcs.anl.gov
Thu Mar 14 12:45:14 CST 2002

At 12:01 PM 3/14/2002 -0500, Nolan, Kevin [NCSUS] wrote:
>The problem we're seeing with both VIC and Rat is that as the TTL value 
>gets increased, the amount of data being transmitted is decreased as a way 
>to alleviate network congestion.  The problem with this is that our remote 
>sites generally connect via high-bandwidth links, and the associated lower 
>frame rates are unacceptable for real-time communication between 
>sites.  Is there any way that we can change these values, or does the 
>source code have to be modified?

the AG software passes a max-bandwidth option to vic that overrides the 

         vic -t 127 -B 10000 ip/port

What is rat doing with ttl? is it refusing to let you set the higher-rate 
encodings? I don't think I have any particular settings to make rat work 


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