---
title: Step 3: Establish Secure Connection Between Primary and Secondary Catalog
slug: edgemanager/how-to-guides/lem-user-ui-guides/establish-secure-connection-between-primary-and-secondary-catalog
description: Learn how to establish a secure connection between primary and secondary catalogs.
docTags: 
createdAt: 2024-05-03T20:24:25.655Z
---

You need to establish a secure connection between the primary and the secondary catalog to synchronize the applications.

A **JSON bootstrap** file is used by the *Secondary *catalog to activate the connection with the *Primary *catalog.

**To download the Primary marketplace catalog bootstrap file: **

1. From the primary marketplace catalog's *Applications *pane, click **Synchronization**. The *Synchronization: Primary Catalog *pane appears.
   ![](https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/QtFapcsutAwaxKDDyllAG_image.png "Synchronization: Primary Catalog pane")
2. From *Expiration within:* customize the desired duration for the bootstrap credential file. 
3. Click **Generate**. A `.bootstrap` file will be downloaded to your local computer.
   ![](https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/BOXayB9hlkOwFAn_jmqGQ_image.png "Synchronization: Primary Catalog pane")

Once you have downloaded the `.bootstrap` file, you need to upload it to at least one *Secondary *marketplace catalog. This should be done on Litmus Edge Manager located in Japan.

**To upload the bootstrap credential file to Secondary marketplace:**

1. From the secondary marketplace catalog's *Applications *pane, click **Synchronization**. The *Synchronization: Secondary Catalog* pane appears.
   ![](https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/_LaApNc_LXeFxxUWxopK7_image.png "Synchronization: Secondary Catalog pane ")
2. Click **Upload**. Then, navigate to the `.bootstrap` file you downloaded earlier from the previous step and select it.
   ![](https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/SuTtDhi2GbBUwEP2zVC24_image.png "Upload the .bootstrap file to Synchronization: Secondary Catalog pane ")
3. Confirm the *Certificate *information and click **Yes**.
   ::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/CPcc58K1hw5rhWCDQlC-G_image.png" size="70" width="607" height="533" position="center" caption="Certificate information pane" showCaption="true"}
4. You need to **approve **the connection request for the *Secondary* Catalog from the *Primary *Catalog pane.
   To do this, go back to the *Synchronization* page in the *Marketplace Catalog* of the first Litmus Edge Manager Instance. Then, select **Secondary Catalogs.**
   ![](https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/YK0F3FqCk2ObKSEUK0Vyo_image.png "Synchronization page for first Litmus Edge Manager Instance")
5. You will receive a request from the secondary catalog to synchronize applications from the primary catalog. Click the **Actions** menu and select **Approve**.
   ![](https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/0Mvnib1tbbDa9ln62ZSUh_image.png "Approve connection request for sync")
6. If successful, the upload process status will display as **Approved **in both the *Primary *and *Secondary Catalog Synchronization* pages. 
   ![](https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/1fDoO3fdJJEqEnt_mgkc7_image.png "Approved Status in the Secondary Catalog Synchronization page")
   ![](https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/33_i6JljTKJV1Adt7VN_0_image.png "Approved Status in the Primary Catalog Synchronization page")

A successful connection has been established between the primary catalog located in Canada and the secondary catalog located in Japan.

**Next:** [Step 4: Synchronize Secondary Catalog to Primary Catalog](docId\:ILFE6vhXxhgSqhuISb8Dl)