What are the options i have for diagram in dashboard studio?
I have version 9.1.8
Its not make any sense there is no option for this diagram and support for this...
I need read more about this Link Graph.
What is the best way to build a diagram for network (ip,vip,fw,subnet...)
Dashboard Studio does not support custom visualizations (like Network Diagram Viz from Splunkbase). These visualizations are only supported in Classic (Simple XML) dashboards.
If you want to stay in Dashboard Studio, use the built-in Link Graph like this