Please look at the LEFDefaultRouteSpec constraint group in you technology file (that you could dump with the technology toolbox).
All custom vias which are part of the validVia list of the LEFDefaultRouteSpec constraint group will be considered as DEFAULT.
This is an old post which has been solved already, I dont know how to remove it,
I you have resolved this issue, can you please tell me how can I resolve it as I am stuck in same error i.e. There is no default via from LAYER MET1 to LAYER MET2.
Alex Soyer said:All custom vias which are part of the validVia list of the LEFDefaultRouteSpec constraint group will be considered as DEFAULT.
I'm not finding this to be the case. My techfile has
( "LEFDefaultRouteSpec" nil "LEFDefaultRouteSpec" interconnect( ( validLayers ( M1 M2 M3 M4 M5 M6 M7 ) ) ( validVias ( M2_M1 M3_M2 M4_M3 M5_M4 M6_M5 M7_M6 ) ) ) ;interconnect
and I'm still getting the error during globalDetailRoute
#ERROR (NRDB-158) There is no default via from LAYER M1 to LAYER M2 in RULE LEF_DEFAULT.
btw, I'm running Encounter 11.10