# clear ssh known-hosts

## Syntax

```
clear ssh known-hosts <host>|all
```

## Syntax Description

<table><thead><tr><th width="203">Keyword</th><th>Description</th></tr></thead><tbody><tr><td>host</td><td>The host for which the SSH key is to be deleted.</td></tr><tr><td><code>all</code></td><td>Deletes the SSH host key for all known hosts.</td></tr></tbody></table>

## Defaults

None; either a host or `all` must be specified.

## Usage Guidelines

This command allows the user to delete the remote SSH host key for a single host, or for all known hosts.

## Examples

```
clear ssh known-hosts server17.example.com
clear ssh known-hosts all
```

## Related Commands

{% content-ref url="/pages/VJpfDLNZKmNF7rlHtnrp" %}
[ssh](/island-router-cli-2.3.2/commands/ssh.md)
{% endcontent-ref %}

{% content-ref url="/pages/3iByrhLFgNniteiLpR0x" %}
[configure known-hosts](/island-router-cli-2.3.2/commands/configure-known-hosts.md)
{% endcontent-ref %}


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