---
title: "Viewing Performance Ratings for an Interface"
canonical: "https://docs.infoblox.com/space/netmri754/105944514/Viewing%20Performance%20Ratings%20for%20an%20Interface"
format: markdown
---
The **Device** **Viewer** > **Interfaces** > **Performance** page shows performance statistics, including utilization rates, error rates, and broadcast levels for each of the interfaces supported by the device. You can also access performance charts for any interface on the chosen device. The table also lists each interface's VRF membership, where applicable.

By default, the table lists configured speed, throughput, percent utilization, percent errors, percent broadcasts, and percent discards, but additional information can be displayed using the **Columns** option available via column header menus.

- To view comprehensive data for an interface, click a hyperlink in the **Interface** column. The Interface Viewer appears, where you can browse through all detected information for the interface.
- To view historical performance charts, click a hyperlink in the **Thruput**, **%Util**, **%Errors,** or **%Bcasts** columns. The Interface Viewer appears, displaying the series of performance charts for the interface selected when you clicked the link. **%Util** indicates the utilization level for the port. **%Bcasts** indicates the level of broadcast traffic on the port.