40G DAC with CRS 326 and Baltic VG 3

Hello,

try to link and 40G DAC Cable between Vengeance 3 and CRS 326 24s+ 2Q+
No way. 40G Links coms not up, not with auto-discovery and not firm in 40G Full-Duplex.

ROS on CRS is 6.48.3.
I have tested with DAC Cable an with 2 QSFP+ LWL Modules.
What’s the problem?

thanks
Christian