how to integrate vcenter in Networker

Excuse me ... but what exactly do you want to ask the community?

How to query the VCenter database for the NW server ?

How to backup the VCenter server ?

How to integrate NetWorker via VADP or VBA ?

So far, let me suggest you just begin reading the appropriate manuals.

If you are looking at NetWorker VMware integration, this guide might help you.

https://support.emc.com/docu53918_NetWorker_8.2_VMware_Integration_Guide.pdf?language=en_US

Regards,

Prajith