[VPN] Multicast traffic and the VPN 3030 concentrator.

Dana J. Dawson Dana.Dawson at qwest.com
Thu Apr 7 15:30:39 EDT 2005

Unfortunately, IPsec doesn't directly support multicast traffic, so you 
can't do what you want to do.  The fix for site-to-site vpn configs is 
to use GRE tunnels to carry the multicast traffic, but the Cisco client 
doesn't do GRE, so that's not an option in this case.

Sorry I don't have better news for you.


Dana J. Dawson                     Dana.Dawson at qwest.com
Sr. Staff Engineer                 CCIE #1937
Qwest Communications
600 Stinson Blvd., Suite 1S
Minneapolis  MN  55413-2620

"Hard is where the money is."

James Muse wrote:
> Greetings,
> I have been attempted to get to a multicast feed through using Cisco VPN 
> client and a 3030 concentrator. The concentrator is configured for 
> IPSec.   I have not been able to get this to work.  Sniffer traces 
> reveal that my vpn client is attempting to use the IGMP to
> Any advice would be apperciated.
> Thanks,
> James
> _______________________________________________
> VPN mailing list
> VPN at lists.shmoo.com
> http://lists.shmoo.com/mailman/listinfo/vpn

More information about the VPN mailing list