> For the complete documentation index, see [llms.txt](https://wiki.astrawireless.net/astra-wireless-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.astrawireless.net/astra-wireless-documentation/technical-documentation/astramux-switches/operation-and-administration/basic-settings/static-links.md).

# Static Links⁣⁣

In the "Static Links" section, you can set up fixed links to the unit. Although the radio parameters and security key match with other nodes, the node that has Static Links set up is only linked with the nodes which are configured in this section. The parameters are:

* "MAC*"* -  MAC address of the neighbor unit
* "Key*"* - link security key (up to 64 characters long, without spaces).

Another two options are available:

* Disable the link by marking the option “Disabled" in the corresponding checkbox
* Add a link description in the “Note" field.

To restrict connections to the listed MAC addresses, the static authorization mode must be selected in the "Link settings" section for the corresponding interface.

<figure><img src="https://2734851754-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FnG7V17JtC1mMJOmveKc6%2Fuploads%2FekoW6HGqqhyLnCw4Q4uN%2Fimage.png?alt=media&amp;token=e70ce16a-c9b2-404a-b0d8-e2a2fd649f46" alt=""><figcaption></figcaption></figure>

By clicking the "Add" button, you create a new fixed link to the unit. By clicking the "Remove" button, you can delete an already created fixed link.