[AG-TECH] Outside AV not working

[Donald Roeber]

This seems to have fixed the problem.  I'm not using 224.2.0.0 -  
224.2.0.0.2 and my external testers are confirming that this works for  
them.

On Feb 21, 2005, at 6:22 PM, Thomas D. Uram wrote:

> Hi Don:
>
> I believe (based on other conversations with you) that you're using  
> multicast addresses similar to 224.0.0.x on your server.  This is,  
> apparently, a problem.
>
> From the cisco Guidelines for Enterprise IP Multicast Address  
> Allocation  
> (http://www.cisco.com/en/US/tech/tk828/ 
> technologies_white_paper09186a00802d4643.shtml), it looks like you  
> should avoid 224.0.0.0-224.0.0.255, which "is used by network  
> protocols on a local subnet segment".
>
> This same document claims that the 'global' range is  
> 224.1.0.0-238.255.255.255, so addresses there should work for you.   
> There are more details in RFC3171, if you're interested.
>
> Let us (ag-tech) know if this fixes your problem.
>
> Tom
>
>
> Donald Roeber wrote:
>> We're running the latest AccessGrid Toolkit on MacOS X, as both a  
>> VenueServer and a UniCast Bridge for that VenueServer.  The server is  
>> multicast enabled, and so are clients on the upenn.edu network.   
>> Clients on the upenn.edu network can connect to the VenueServer and  
>> use RAT and VIC just fine.  Unfortunately, for people outside of the  
>> Penn network, audio and video doesn't work, but they can still use  
>> the text chat built into the VenueClient.  We don't have any  
>> firewalls or anything like that in place.  Because of a bug in the  
>> MacOS X version of the AGToolKit we're using manual multicast  
>> addressing for each venue.  Each venue is assigned a unique IP  
>> address for audio and video, and a unique even numbered port number  
>> for each service as well.
>> Any help would be greatly appreciated.
>>
-- 
Donald Roeber
ISC Networking