cmts.geo(config-subif)#int Cab3/0
cmts.geo(config-if)#ip ?
Interface IP configuration subcommands:
  address  Set the IP address of an interface
  rsvp     RSVP Interface Commands
  rtp      RTP parameters
  vrf      VPN Routing/Forwarding parameters on the interface

cmts.geo(config-if)#int Bundle1
cmts.geo(config-if)#ip route-cache cef
cmts.geo(config-if)#int Bundle1.1
cmts.geo(config-subif)#ip route-cache ?
  same-interface  Enable fast-switching on the same interface
  <cr>