---
title: Site and Node-Locked License Overview for Litmus Edge Manager
slug: edgemanager/resources/references/site-and-node-locked-license-overview-for-lem
description: Review the differences between site and node-locked licenses. 
docTags: 
createdAt: 2023-03-09T21:00:34.000Z
---

For a Litmus Edge Manager instance to be able to fully access all features, it must carry a license. This license can be a site license or a node-locked license. 

For information about Litmus Edge licenses, see [Site and Node-Locked License Overview for Litmus Edge](docId\:nbX0O6C5ylSh-qVy0sdJc).

# Understanding and Adding a Site License for Litmus Edge Manager

Litmus Edge Manager contains a license server that must be added with a site license. Unlike Litmus Edge, a Litmus Edge Manager must use the site license within its own embedded license server to access all features. The Litmus Edge Manager cannot use a standalone license server's site license.

A site license, depending on its constituent features, may act both as a Litmus Edge site license and also a Litmus Edge Manager site license.

To add a site license to Litmus Edge Manager, add it in [License Server Management](docId:5U_hNNsaVs--E5HQJEQ0O). To set Litmus Edge Manager to use the added site license, see [Admin Console Licenses](docId\:dMpF2PJbBM7kQQgs0lVUC).

:::hint{type="warning"}
**Note:** Once a site license is activated, the user must choose the license type; otherwise, the site license will not be applied.

This selection can be made in **Settings** > **License **> **License Settings**.
:::

# Understanding and Adding a Node-Locked License for Litmus Edge Manager

For a Litmus Edge Manager to carry a node-locked license, you will need a license key. The key will be a 16-digit code (`####-####-####-####`) that is valid for certain number of years, based on the license SKU definition. The node-locked license key can be requested from Litmus account executives. 

A Litmus Edge Manager node-locked license key cannot be used as a Litmus Edge node-locked license key. 

To add a node-locked license key to the Litmus Edge Manager, see [Admin Console Licenses](docId\:dMpF2PJbBM7kQQgs0lVUC). 

:::hint{type="warning"}
**Important**: Each node-locked license key is bound to a Litmus Edge Manager MAC address. If the MAC address is changed, the license key will be invalidated.
:::

# Understanding Litmus Edge and Litmus Edge Manager License Differences

Both Litmus Edge and Litmus Edge Manager can carry their own node-locked License version. However, a site license's constituent features will determine whether the site license can be used to a Litmus Edge instance, a Litmus Edge Manager instance, or both.

## Litmus Edge Manager Features for Litmus Edge Licenses

Litmus Edge Manager also offers features that manage the Litmus Edge site and node-locked licenses. From Litmus Edge Manager, you can do the following:

- Monitor the expiration date of Litmus Edge instances. See [Licenses](docId\:Zurp8hVnSYJMgcZ1mceUQ).
- Set the initial license status of a Litmus Edge instance. See [Step 2: Create an Activation Configuration in Litmus Edge Manager](docId\:vVZ99_j_TGxX6b9-Y9f8L) to learn more. 
- View and change the license status of one specific Litmus Edge instance. See [License](docId\:yNEZ4ZGTuD6lrZxdTMcz5).
- Manage site licenses that Litmus Edge instances will receive (and the Litmus Edge Manager itself can also receive). See [License Server Management](docId:5U_hNNsaVs--E5HQJEQ0O).

# Litmus Edge Manager Site Licenses and Node-Locked Licenses Compared

| **Site License**                                                                                       | **Node-Locked**                                                                                            |
| ------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------- |
| Access to features/capabilities depends on type of license. <br />Activation can be completed offline. | Provides access to all Litmus Edge Manager features. <br />Activation can be completed online or offline.  |
| Can be upgraded with additional features/capabilities.                                                 | Can be upgraded with additional features/capabilities.                                                     |