The interface command has the following format:
interface interfaceType interfaceSpecifier
Each interface type has an interface specifier associated with it. The interface specifier identifies the physical location of the interface on the router, such as the chassis slot and port number, and logical interface information, such as a T1 channel on a channelized T3 interface.
For detailed information about interface types and specifiers and for specific syntax for the interface command, see the Interface Types and Specifiers.