> For the complete documentation index, see [llms.txt](https://docs.eseye.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.eseye.com/hera604/diagnostics-and-maintenance/system-settings/network-time-protocol-ntp.md).

# Network time protocol (NTP)

Upload supported software to the Hera 604.

<figure><img src="https://333373795-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FBMckwRPzYNvOiZyh1fl3%2Fuploads%2Fw74T2sVVZewAUuRRzRS5%2FScreenshot%202026-08-14%20at%2016.59.41.png?alt=media&amp;token=b698aa57-819f-49eb-b596-3db6055b4638" alt=""><figcaption></figcaption></figure>

Open **Diagnostics & Maintenance > System Settings > Network time protocol (NTP)** to configure clock synchronisation.

| Field                                   | Description                                                                                                                                 |
| --------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- |
| Local NTP server                        | Enables or disables the router's local NTP server. This does not disable the router's NTP client.                                           |
| NTP servers                             | Lists the NTP servers used to synchronise the router clock. The screenshot shows `0.openwrt.pool.ntp.org` through `3.openwrt.pool.ntp.org`. |
| NTP pools                               | Lists any configured NTP pool sources.                                                                                                      |
| Use IPv4 for NTP server name resolution | When enabled, limits NTP hostname resolution to IPv4.                                                                                       |
| Minimum poll time                       | Minimum interval between NTP polls.                                                                                                         |
| Maximum poll time                       | Maximum interval between NTP polls.                                                                                                         |

If every NTP server is removed, the NTP client is disabled. Keep at least one reachable, approved time source. Accurate time is required for logs, certificates, and fault investigation.

###


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.eseye.com/hera604/diagnostics-and-maintenance/system-settings/network-time-protocol-ntp.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.