Which is prioritized for multicast traffic if FastSwitching and CEF is enable?

Question

                   Hello
Here is the related configuration and output of show command below,
In my understanding, there are 3 swtching mode, CPU, fast-swthing and CEF swthing,
But if FastSwthing and CEF swithing are enable both, then which swithing mode is prioritized for mutlicast traffic?
interface Vlan302
ip address 10.0.20.1 255.255.255.0
3750X#sh ip int vlan 302
Vlan302 is down, line protocol is down
  Internet address is 10.0.20.1/24
  Broadcast address is 255.255.255.255
  *omit
  IP fast switching is enabled
  IP Flow switching is disabled
  IP CEF switching is enabled
  IP CEF switching turbo vector
  IP Null turbo vector
  IP multicast fast switching is enabled
  IP multicast distributed fast switching is enabled
  IP route-cache flags are Fast, CEF
  *omit
interface Vlan301
ip address 10.0.10.1 255.255.255.0
no ip mroute-cache
3750X#sh ip int vlan 301
Vlan301 is down, line protocol is down
  Internet address is 10.0.10.1/24
  Broadcast address is 255.255.255.255
  *omit
  IP fast switching is enabled
  IP Flow switching is disabled
  IP CEF switching is enabled
  IP CEF switching turbo vector
  IP Null turbo vector
  IP multicast fast switching is disabled
  IP multicast distributed fast switching is disabled
  IP route-cache flags are Fast, CEF, No Distributed
  *omit
Product : Cat3750X
IOS version :  15.0(2)SE5
Best Regards,
Masanobu Hiyoshi

Answer 1

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I'm not 100% certain, but I believe FastSwitching and CEF switching apply to unicast, not multicast.  Your "IP mroute-cache" command enables/disables fast multicast switching.
On a 3750, switching should be hardware based, for unicast and multicast, unless TCAM resources are insufficient.  If hardware switching falls back to non-hardware switching, you'll likely find process vs. Fast vs. CEF vs. multicast doesn't matter, all too slow.