The version of the U2000 is V100R006C00SPC200
On menu Inventory -> SDH Report -> Port Resource Report we can't see all subnets like in the Main Topoly tab as the pictures below:
In the Main Topology tab, we can see all subnets:
On the other hand, in the Port Resource Report tab, we can't see all subnets.
We can see only 8 subnets: