Hi,
Unfortunately, ASRs don't support RJ45 10GE interfaces. Also, there are no SFP+ interfaces supporting 10GBaseT.
If You need to have the 10GBaseT interface, you can try to use 6500E/6800 linecards or Nexus 3000/5000 series - they have routing capa...
PFC stands for "Policy Feature Card" and it's present on the Supervisor, and can be present on the line cards. DFCs, or "Distributed Feature Card" are present only on the line cards, and on some devices (like Cat6500 or 7600 router) can be added at l...
There is no recommended limit on ISR G2s, there's limit to the number of packets/second that can be switched through the router or some specific recommendations for advanced features - like firewall sessions/second, VPN sessions and things like that....