VMware vRealize Network Insight helps accelerate application security and networking across private, public and hybrid clouds . And it helps to  build an optimized, highly available and secure network infrastructure across multi-cloud environments. It accelerates micro-segmentation deployment, minimizes business risk during application migration and enables customers to confidently manage and scale NSX deployments.

Key features and capabilities of vRealize Network Insight 4.0

Public/Hybrid Cloud

• VMware Cloud on AWS (VMC) Integration as a data source
  • Traffic analysis and micro-segmentation planning for VMC workloads
  • Migration planning from on premises to VMC
  • Hybrid network path troubleshooting (VMC-to-on-premises, gateways, VPN)
• New capabilities in AWS
  1. Geo blocking support to limit the AWS API calls to certain AWS regions
  2. VM-VM path for the network visibility for network troubleshooting between the following two components:
     • On-premises SDDC and AWS
     • On-premises VMs and AWS EC2 instances

Operations Enhancements

• VMware NSX-T Data Center Enhancements 
  1. 1. Support for additional events to monitor NSX-T health along with the enriched metrics for logical switch, logical port, router interface, and firewall rules
     2. Support for NAT in VMware NSX-T Data Center. This release supports SNAT, DNAT and REFLEXIVE rules
• Third-party support
  1. Cisco ACI as physical underlay visibility includes End Point Groups, dashboards, search queries, and the VM-VM path topology over the leaf/spine arch.
  2. Cisco BGP-EVPN overlay detection as the physical underlay connectivity
  3. sFlow ingestion for the underlay traffic or the flow analysis
  4. F5 BIG-IP (as a routing hop only)
  5. Cisco ASA firewall
  6. Check Point Firewall Enhancements
     • Support for Multi-Domain Management Server
     • Support for Virtual System Extensions (VSX)

Analytics

• Configure static and dynamic baseline and thresholds for the VMs and the flows to proactively troubleshoot network performance for the applications and virtual infrastructure

Scaling and Performance Enhancements

• Introduction of 10 node XL cluster
• Increased support up to 100K VMs
• Increased support for 10k VMs & 10 million flows through a single XL proxy
• Concurrent update to all components – optimizes upgrade sequence and time
• Site Recovery Manager (SRM) support to migrate platform VMs
• Improved Search and its documentation

Other Capabilities and Enhancements

• Pinboard Enhancements: Set as homepage, quick navigation, search pinboards, and duplicate pinboards
• System-Level Audit Logs to keep track of all administrative actions such as Create, Edit, Update, Delete, Login, and Logout
• The firewall masking service has been enhanced to include the IP definition of IPSets used in the Source, Destination, and the Applied To attributes of the NSX firewall rules.
• Save configuration for CSV Export as template for users to export the results of any search query or data displayed on any widget
• Support for Internationalization level 1 (i18n L1) with Non-english OS and input/output

Upgrade Path

vRealize Network Insight 4.0 supports direct upgrade from the 3.9 and 3.8 versions.

Refer to the Upgrading vRealize Network Insight section to get information on upgrade options and upgrade path

Note :-  Before deploying or upgarding check the known issues and fixes with this release from here

Reference

• vRealize Network Installation Guide
• vRealize Network Insight User Guide
• vRealize Network Insight Command-Line Interface Reference Guide
• vRealize Network Insight Frequently Asked Questions
• vRealize Network API Documentation