> For the complete documentation index, see [llms.txt](https://docs.islandrouter.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.islandrouter.com/island-router-cli-2.3.2/commands/ping.md).

# ping

## Syntax

```
ping [ip|ipv6] <host>
```

## Syntax Description

<table><thead><tr><th width="203">Keyword</th><th>Description</th></tr></thead><tbody><tr><td><code>ip</code></td><td>(Optional) Use IPv4.</td></tr><tr><td><code>ipv6</code></td><td>(Optional) Use IPv6.</td></tr><tr><td>host</td><td>The domain name or IP address of the host to be pinged.</td></tr></tbody></table>

## Defaults

If neither `ip` no `ipv6` is specified, the protocol is chosen automatically.

## Usage Guidelines

The ping command is used to test the reachability of another system and measure the round-trip time (RTT) to the system using ICMP Echo Request packets. Once the command is issued, it will continue until stopped by pressing Control-C.

## Examples

```
ping 192.168.81.42
ping ipv6 www.example.com
```

## Related Commands

{% content-ref url="/pages/695EWHHcGLAUPGlO3MmW" %}
[Broken mention](broken://pages/695EWHHcGLAUPGlO3MmW)
{% endcontent-ref %}


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