C1921, running version 15.1(4)M2, with licence for "IP base" feature set only.Trying to pass multicast via a PPTP VPN from a Windows XP machine to work around a non multicast-aware WAN link1. With the IP Base feature set I am able to create a plain P...

Got a proprietary voice/data application running on two PCs (Windows XP) that are connected via a private IPv4 backbone that does not pass multicasts. I am aware that the "usual" solution is to use a pair of Cisco routers and set up a GRE Tunnel betw...

I am currently stuck in troubleshooting a problem of multicast data not working over a GRE tunnel joining two networks; I have re-created the problem in a very simple lab network having just two Cisco routers.I suspect that I have overlooked somethin...