O'Reilly logo
  • Ankur Sood thinks this is interesting:

By default, all interfaces on these switches are routed interfaces (i.e., identical to Ethernet interfaces on a traditional router) and are in a shutdown state, meaning you must explicitly enable each interface and configure each as a Layer 2 interface to enable Layer 2 switching.

From

Cover of CCNP Self-Study CCNP Practical Studies: Switching

Note

Interface Configuration