mixed SFP for private interconnect network switch in RAC configuration

We are considering add 3 new database servers to an existing 3 node RAC cluster. The existing nodes connect to the private interconnect network switch via 1Gb copper SFP, while the new DB servers come with 10Gb fiber SFP. Our private interconnect network switch is a newer Cisco equipment which supports both 1Gb copper and 10Gb fiber. Our plan is to eventually retire the old 3 node once the 3 new servers are running stable.

So, my question is, does Oracle support such a mixed SFP configuration for private interconnect network?