> For the complete documentation index, see [llms.txt](https://doc.i4e.com.bd/networking/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.i4e.com.bd/networking/doc/rotate-ntp.md).

# Rotate NTP servers

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## Description

RouterOS requires NTP servers to be configured by IP address. Servers from a pool may appear and disappear, leaving broken NTP configuration.

This script allows to rotate IP addresses from a given pool.

## Requirements and installation

Just install the script:

```
$ScriptInstallUpdate rotate-ntp;
```

## Configuration

The configuration goes to `global-config-overlay`, this is the parameter:

* `NtpPool`: dns name of ntp server pool

## Usage and invocation

Just run the script to update the NTP configuration with actual IP addresses from pool if required.

Alternatively a scheduler can be created:

```
/ system scheduler add interval=5d name=rotate-ntp on-event="/ system script run rotate-ntp;" start-time=startup;
```

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