How to create a network dataset if I have a integer field in street(line) feature class having multiple values (like 1 shows higher level and 5 shows lower level) and I want to find best route having roads (only highways and major roads) of higher level

[aashumittal]

How to create a network dataset if I have a integer field in street(line) feature class having multiple values (like 1 shows higher level and 5 shows lower level) and I want to find best route having roads (only highways and major roads) of higher level.

[JoeBorgione]

Create a network from a feature class of just those roads.