# Traffic Topology

DCE 5.0 Service Mesh provides a dynamic flow visualization feature called Traffic Topology.

In the left navigation menu, click __Traffic Monitoring__ -> __Traffic Topology__ .
Here, you can choose the __View__ , __Namespace__ , __Collection source__ , and __Time__ to view the service topology.

![Traffic Topology](https://docs.daocloud.io/daocloud-docs-images/docs/en/docs/mspider/user-guide/images/topo01.png)

## Display Settings

There are three options available:

- Namespace Boundary: Displays services partitioned by namespaces.
- Show Idle Nodes
- Enable Animation: Shows the dynamic flow direction of traffic.

![Display Settings](https://docs.daocloud.io/daocloud-docs-images/docs/en/docs/mspider/user-guide/images/topo02.png)

The service topology graph supports operations like panning and zooming.

## Legend

Click the __Legend__ button in the bottom-left corner to see the meaning of the current lines, circles, and colors.

![Legend](https://docs.daocloud.io/daocloud-docs-images/docs/en/docs/mspider/user-guide/images/topo03.png)

Services are represented by circles, and the color of the circle indicates the health status of the service:

- Healthy (Gray): Error rate = 0 and latency does not exceed 100 ms.
- Warning (Orange): 0 < Error rate <= 5% or 100 ms < Latency <= 200 ms.
- Critical (Red): Error rate > 5% or latency > 200 ms.
- Unknown (Dotted Line): No metric data available.

## Service Metrics Information

Click any service to open a sidebar that displays relevant metrics based on the protocol type:

- HTTP Protocol: Error Rate (%), Request Rate (RPM), Average Latency (ms)
- TCP Protocol: Connection Count, Receive Throughput (B/s), Send Throughput (B/s)
- Governance Information: View virtual services, destination services, gateways, etc.

![Sidebar](https://docs.daocloud.io/daocloud-docs-images/docs/en/docs/mspider/user-guide/images/topo04.png)