Check 40G interface

Hello,

I'm a newbie to Juniper and this is my first post here!

I have a couple of E4300 switches. It has got two 40GE QSFP+ ports.

User@EX4300-2> show chassis hardware | match 40G
  PIC 1          REV 32   BUILTIN      BUILTIN           4x 40GE QSFP+
    Xcvr 0       REV      740-044512   APF17120005DT9    QSFP+-40G-CU50CM
    Xcvr 1       REV      740-044512   APF17120005DNB    QSFP+-40G-CU50CM
  PIC 1          REV 32   BUILTIN      BUILTIN           4x 40GE QSFP+
    Xcvr 0       REV      740-044512   APF17120005DNB    QSFP+-40G-CU50CM
    Xcvr 1       REV      740-044512   APF17120005DT9    QSFP+-40G-CU50CM

{master:1}

But when I check the interface details I don't see these interface listed there. I expect them to see as two 'et' interfaces.  But I see two VCP instead. Is this correct? I read somewhere that 40G QSFP+ by default configured as VCP ports. Where can I see that configuration? How can I convert them to normal network ports?

User@EX4300-2> show interfaces terse
Interface               Admin Link Proto    Local                 Remote
vcp-255/1/0             up    down
vcp-255/1/0.32768       up    down
vcp-255/1/1             up    up
vcp-255/1/1.32768       up    up
ge-0/0/0                up    down
ge-0/0/0.0              up    down eth-switch
pfe-0/0/0               up    up
pfe-0/0/0.16383         up    up   inet
                                   inet6
pfh-0/0/0               up    up
pfh-0/0/0.16383         up    up   inet

Any help would be appreciated!