# 1m\_sent\_traffic\_overflow

**URL:** <https://community.netdata.cloud/t/1m-sent-traffic-overflow/2122>\
**Category:** Alerts\
**Created:** [November 5, 2021, 7:39pm UTC](https://community.netdata.cloud/t/1m-sent-traffic-overflow/2122 "2021-11-05T19:39:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Tasos\_Katsoulas](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.netdata.cloud/tasos_katsoulas/32/1344_2.png) [@Tasos\_Katsoulas](https://community.netdata.cloud/u/Tasos_Katsoulas)\
**Post date:** [November 5, 2021, 7:39pm UTC](https://community.netdata.cloud/t/1m-sent-traffic-overflow/2122/1 "2021-11-05T19:39:33Z")

</div>

# 1m\_sent\_traffic\_overflow

## OS: Linux

Network interfaces are categorized primarily on the bandwidth rate at which they can operate (1 Gbps, 10 Gbps, etc). High network utilization occurs when the volume of data on a network link approaches the capacity of the link. The Netdata agent calculates the average outbound utilization for a specific network interface over the last minute. High outbound utilization increases latency and packet loss because packet bursts are buffered.

This alarm may indicate either a network congestion or malicious activity.

### Troubleshooting section

> **Prioritize important traffic**
>
> Quality of service (QoS) is the use of mechanisms or technologies to control traffic and ensure the performance of critical applications. QoS works best when low-priority traffic exists that can be dropped when congestion occurs. The higher-priority traffic must fit within the bandwidth limitations of the link or path. The following are two open source solutions to apply QoS policies to your network interfaces.
> 
> - `FireQOS`:
> 
> - `tcconfig`:

> **Add bandwidth**
>
> - For **Cloud infrastructures** , adding bandwidth might be easy. It depends on your cloud infrastracture and your cloud provider. Some of them either offer you the service to upgrade machines to a higher bandwidth rate or upgrade you machine to a more powerful one with higher bandwidth rate.
> 
> - For **Bare-metal** machines you will need either a hardware upgrade or the addition of a network card using link aggregation to combine multiple network connections in parallel (e.g LACP).