Best Practices for Enabling Active Directory Forest Discovery in SCCM

Hi All,

We are going to enable the AD Forest Discovery in our Configuration Manager environment and before do that I wanted to make sure the best practices to doing that. I have below concerns when we enabling the AD forest discovery. appreciate the help on this.

1. Can we enable only AD forest discovery and keep System discovery disable in the environment. What are the disadvantages of doing that?
2. When we enabling AD forest discovery, when do we need to enable "automatic IP subnet boundary creation" and what are the disadvantages of not enabling that?
3. Is it ok if I enable only "Automatic IP range boundary creation" without enabling "automatic IP subnet boundary"?
4. When to enable "Publish the site to AD forest" and what are the disadvantages of not enabling it?

Thanks in advance,

Dilan