# speed

## Syntax

```
[no] speed auto|10|100|1000|2500|5000|10000
```

## Syntax Description

<table><thead><tr><th width="203">Keyword</th><th>Description</th></tr></thead><tbody><tr><td><code>no</code></td><td>(Optional) Returns the interface speed to its default value.</td></tr><tr><td><code>auto</code></td><td>The interface speed is set via auto-negotiation.</td></tr><tr><td><code>10</code></td><td>The interface is speed is set to 10 Mbps.</td></tr><tr><td><code>100</code></td><td>The interface is speed is set to 100 Mbps.</td></tr><tr><td><code>1000</code></td><td>The interface is speed is set to 1 Gbps.</td></tr><tr><td><code>2500</code></td><td>The interface is speed is set to 2.5 Gbps.</td></tr><tr><td><code>5000</code></td><td>The interface is speed is set to 5 Gbps.</td></tr><tr><td><code>10000</code></td><td>The interface is speed is set to 10 Gbps.</td></tr></tbody></table>

## Defaults

Interface speed is set via auto-negotiation by default.

## Usage Guidelines

This command can be used to force the speed of an interface if autonegotiation is unavailable or undesirable.

If speed is explicitly configured for an interface, the interface duplex should also be explicitly configured. In other words, auto-negotiation should be enabled or disabled identically for both speed and duplex.

Note that specific interface may not support all of the speeds defined above.

This command is valid only in interface context.

## Examples

```
speed 2500
```

## Related Commands

{% content-ref url="/pages/JK6QY8Ad2gffsaGWZyNw" %}
[interface](/island-router-cli-2.3.2/commands/interface.md)
{% endcontent-ref %}

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


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