# interface

## Syntax

```
[no] interface <string>
```

## Syntax Description

<table><thead><tr><th width="203">Keyword</th><th>Description</th></tr></thead><tbody><tr><td><code>no</code></td><td>(Optional) Causes the specified interface to be deconfigured.</td></tr><tr><td>string</td><td>The name of the interface to be configured.</td></tr></tbody></table>

## Defaults

The CLI is in global context by default.

## Usage Guidelines

This command must be given before issuing any commands that modify an interface. The specified interface remains the “selected” interface until another [interface ](/island-router-cli-2.3.2/commands/interface.md)command or the [end ](/island-router-cli-2.3.2/commands/end.md)command is issued.

The “no” form of this command deletes all configuration information, both learned and manually-configured, from the specified interface. For physical interfaces (e.g., Ethernet), the interface is placed into automatic configuration mode. For virtual interfaces, the interface is deleted from the system.

## Examples

```
interface en0
no interface vlan14
```

## Related Command

{% content-ref url="/pages/koOuJ6Qcr2sPqlqhq947" %}
[duplex](/island-router-cli-2.3.2/commands/duplex.md)
{% endcontent-ref %}

{% content-ref url="/pages/rZfWb1vTTiATBne2qF2S" %}
[ip (interface context)](/island-router-cli-2.3.2/commands/ip-interface-context.md)
{% endcontent-ref %}

{% content-ref url="/pages/iJ2xBJNNpDgvIwt3G5K5" %}
[speed](/island-router-cli-2.3.2/commands/speed.md)
{% endcontent-ref %}


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