View cloud network structure and traffic distribution - Network Intelligence Service

You can use the network topology and traffic analysis features of Network Intelligence Service (NIS) to quickly learn about the cloud network structure and traffic distribution of enterprise services, optimize resource allocation, and design network architecture.

Scenarios

You can use NIS to observe global network topologies, view the routing topology/topology of routes and correlations between resources, and view traffic volume and distribution.

View global network topologies

You can view the global network structure of your enterprise on the CEN Topology page in the NIS console. You can also view the network structure of a Virtual Private Cloud (VPC) on the VPC Topology page in the NIS console. These help you quickly learn about asset deployment and network structure and efficiently perform routine operations and maintenance (O&M).

Log on to the NIS console.
In the navigation pane on the left, choose Network Topology > CEN Topology.
On the Cloud Enterprise Network Topology page, select the Cloud Enterprise Network ID, click Generate Topology, and view the global network topology.
You can click the node collection to view the VPC list.
Click a VPC entity and click View VPC Topology in the toolbar. View the VPC topology of each region to learn about the deployment of each service resource.
Click a Classic Load Balancer (CLB) entity and click Resource Topology Analysis in the toolbar to view the CLB topology.

More Information

Analyze VPC Traffic

After you connect VPC flow logs to NIS Traffic Analyzer, you can analyze traffic for internal VPC communication or traffic between VPCs and the Internet.

Create an NIS Traffic Analyzer
Create VPC flow logs as a data source
Important
When analyzing Internet traffic, note the following limitations:
- The NIS Traffic Analyzer analyzes Internet traffic based on VPC flow logs. Because VPC flow logs collect traffic only from Elastic Network Interfaces (ENIs), NIS Traffic Analyzer does not support collecting Internet traffic from instances that do not use an ENI-based architecture, such as IP Target or Classic Load Balancer (CLB).
- You can enable VPC flow log collection at the VPC, vSwitch, or Elastic Network Interface (ENI) dimension. However, VPC flow logs do not support collecting only Internet traffic. Enabling them also includes internal network traffic. Choose a collection method based on your analysis needs:
  - Full Internet traffic analysis: Enable VPC-level flow logs. The NIS Traffic Analyzer automatically filters and parses the Internet traffic data.
  - Specific Internet IP analysis: Find the Elastic Network Interface (ENI) to which the IP is attached and enable the corresponding flow logs.
Analyze VPC Traffic

Analyze TR Traffic

After you connect Transit Router (TR) flow logs to NIS Traffic Analyzer, you can analyze traffic between TRs and network instances, or cross-region traffic between different TRs.