Configures the cost type of the IS-IS process:
narrow (1): the narrow type
narrowcompatible (2): the narrow-compatible type
compatible (3): compatible type
wide (4): wide type
widecompatible (5): wide-compatible type
narrowcompatiblerelax (6): narrow-compatible relax-spf-limit type
compatible-relax (7): compatible relax-spf-limit type
By default, the cost type of an IS-IS process is narrow.