Which of the following is incorrect about the hierarchical deployment of eSight?

eSight supports the hierarchical deployment, relieving the management pressure of large-scale networks.

Hierarchical deployment of eSight includes upper-level eSight and lower-level eSight.

Hierarchical deployment of eSight breaks through the resource management capability and performance limitation of single eSight site.

In hierarchical deployment of eSight, the version of the upper-level eSight can be different from that of the lower-level eSight.