Reporting › Site Context Views › Top Interface Errors/Discards (Table)

Top Interface Errors/Discards (Table)

The Top Interface Errors/Discards view lets you quickly determine likely places where problems are occurring.

When detected in the inbound direction, errors typically indicate problems with the transmission medium (for example, cable or fiber). Outbound errors indicate problems with the interface hardware. The acceptable rate of errors for any given interface is typically zero (0) errors.

Each reported discard is a packet that the reporting interface threw out. The sending host must retransmit such packets if a reliable protocol such as TCP is used to send the data end-to-end. Interface discards are typically the result of congested queues serving the interface.

Use this view to compare discard and error rates for inbound and outbound traffic on selected interfaces. Interfaces in the reporting groups or in the managed objects with the highest total loss rates during the selected time period are included. By default, averages are displayed as an average total per interface for the selected time range. However, you can change the View Metrics As setting to see rate metrics (Rate value) or totals (Count value).

You can sort the table columns to compare error rates by interface description, for example.

Click the name of an item to see more data from that item.

By default, the Top Interface Errors/Discards view contains the following information:

Device Name

Identifies the managed item that was the source of the performance data. If an administrator defined an alias for the device item, the alias is displayed. Otherwise, the discovered device name is displayed.

Name

Is the name of the interface.

Description

Is the type of interface, such as Gigabit Ethernet. If an administrator defined an alternate interface description, the alternate description is displayed. Otherwise, the discovered description is displayed.

Total Discards In

Is the total number of discarded packets for inbound traffic on the interface during the reporting period.

Total Discards Out

Is the total number of discarded packets for outbound traffic on the interface during the reporting period.

Total Errors In

Is the total number of errored packets for inbound traffic on the interface during the reporting period.

Total Errors Out

Is the total number of errored packets on the interface during the reporting period.