Controlling Via Stacking

Via stacking is allowed by default.

To control the stackability of vias up and down, use

set_via_stackability -via s_viaName -up [ true | false ] -down [ true | false ]

To check the stackability properties on all vias, use

report_via_stackability 

Related Topics

Preparing the Routing Environment

Routing Vias

Using Via Abstraction

Determining Which Via the Router Will Use