Apologies, my multicast is quite poor. Take the simple network: https://imgur.com/a/GfpQ143
The normal unicast path between C and F is C-B-A-D-E-F. I'd like multicast to flow C-B-E-F. I'm using static mroutes on B and E to influence this path; however, multicast won't work. Debugging B shows the RPF check is using A, the unicast path. The mroute is in place, show ip rpf <IP> shows E is the RPF interface, yet debugging still shows A as being chosen for the RPF check. The second I change unicast routing to route between B and E multicast begins working and debugging shows E as the chosen next-hop interface for the RPF check. Is my understanding just wrong? I'm still actively labbing and reading to better understand and thought any input or opinions would be greatly appreciated.
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