ROS / SwOS versions? Have you tried booting the CRS326 in ROS?
According to the wiki
a 10G Link between CRS326 and CCR1009-7G-1C-1S+ using a SFP+ 1m or 3m DAC should be supported (SFP+ 1m/3m DAC
I would check both Routerboards have the latest ROS / SwOS versions and Firmware, if you still don't get a 10G link, I'd generate a supout and email it to support, linking to this post.
What's the SFP port configuration? Is autonegotiation on? Is 10G advertised?
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