Has anyone deployed WAAS using multicast for the WCCP registration? We're using the multicast address of 239.0.0.1 ip pim dense-mode and multicast routing being enabled. Does anyone know if you can use  ip pim sparse-dense-mode instead of ip pim dense-mode? The documentation shows only an example for ip pim dense-mode. I've gotten it working in the LAB, I was just wondering what the recomendation is and if it's alight to use 239.0.0.1 instead of the 224.10.10.1 multicast address shown in the documentation.Is the 224.10.10.1 reserved for WAAS? If so then I would want to use that instead of 239.0.0.1.