> For the complete documentation index, see [llms.txt](https://docs.glesys.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.glesys.com/products/compute/guides-for-server-management/manage-network-adapters-using-ethtool-in-linux.md).

# Manage network adapters using ethtool in Linux

***

`ethtool` is a useful utility for displaying information about and configuring network adapters in Linux.

For example, to retrieve link information for the network adapter, you can run this command:

{% code title="Command" %}

```
ethtool ens192
```

{% endcode %}

This will output something similar to this:

{% code title="Output" %}

```
Settings for ens192:
        Supported ports: [ TP ]
        Supported link modes:   1000baseT/Full
                                10000baseT/Full
        Supported pause frame use: No
        Supports auto-negotiation: No
        Supported FEC modes: Not reported
        Advertised link modes:  Not reported
        Advertised pause frame use: No
        Advertised auto-negotiation: No
        Advertised FEC modes: Not reported
        Speed: 10000Mb/s
        Duplex: Full
        Auto-negotiation: off
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        MDI-X: Unknown
        Supports Wake-on: uag
        Wake-on: d
        Link detected: yes
```

{% endcode %}

You quickly see that it is a network card that supports both 1 Gbps and 10 Gbps. The server in this example is running Debian 12 on our VMware platform.

If you run the same command with the `-i` option, you’ll get information about the driver.

{% code title="Command" %}

```
ethtool -i ens192
```

{% endcode %}

This command will show an output similar to this:

{% code title="Output" %}

```
driver: vmxnet3
version: 1.7.0.0-k-NAPI
firmware-version:
expansion-rom-version:
bus-info: 0000:0b:00.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: yes
supports-priv-flags: no
```

{% endcode %}

On a physical machine with multiple network adapters, you make the adapter blink to identify itself so you can locate it. You use the `-p` option for this, like this:

{% code title="Command" %}

```
ethtool -p ens192 20
```

{% endcode %}