---
title: "Replacing a Collector"
canonical: "https://docs.infoblox.com/space/NetMRIAdminG752/42402343/Replacing%20a%20Collector"
format: markdown
---
Prerequisites:

Prepare a new collector (that is, the replacement collector) that will replace the existing one, including:

- Configure the management port IP address on the replacement collector using the Admin Shell with SSH and the following command:  
`new_collector_admin > ``configure server`

- Install the standalone license on the replacement collector. For more information, see *<span style="color: #0000ff">[5th](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)*<span style="color: #0000ff">[Step:](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)*<span style="color: #0000ff">[Installing](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)*<span style="color: #0000ff">[the](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)*<span style="color: #0000ff">[Operations](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)*<span style="color: #0000ff">[Center](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)*<span style="color: #0000ff">[Collector](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)*<span style="color: #0000ff">[Licenses](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRIAdminG752/pages/42272091)</span>*.

To replace a collector in an Operations Center environment, complete the following:

1. In the NetMRI UI of the Operations Center, click the **Settings** icon > **Setup** >**Tunnels ****and ****Collectors**.
2. To replace the collector, click **Actions** > **Collector ****Replacement**.
3. Change the serial number of the existing collector to that of the replacement collector.
4. Click **OK**.
5. In the administrative shell, log in to the existing collector and then deregister it.  
`old_collector_admin > ``deregister`
6. Register the replacement collector to the Operations Center IP Address, and define the Operations Center Network to which the collector belongs.  
  
`new_collector_admin > ``configure tunclient`  
`NOTICE: The inactivity timeout is being disabled temporarily while this command is run.`  
`+++ Configuring Tunnel Registration Settings`  
`Registration Server/IP [example.com]: tunserver IP address or FQDN`  
`Registration protocol (http|https) [https]:`  
`Registration username: tunserver login`  
`Registration password: tunserver password`  
  
After executing the `configure tunclient` command, the Operations Center automatically pushes all previous collector settings to the replacement collector and the collector begins its normal discovery tasks.
7. In the NetMRI UI of the Operations Center, click the **Settings** icon > **Setup** > **Scan Interfaces** and change the scan IP address for that of the new collector.
8. To verify that the replacement collector status is **Connected**, click the **Settings** icon > **Setup **> **Tunnels** **and** **Collectors** and then check the collector status in the **Status** column.


You can use SSH to log in to the Operation Center's Admin Shell, to view a listing of the OC system and the collectors. The `show tunserver` command shows each collector's status in its listing.

> ⚠️ **Note**
> ⚠️ 
> ⚠️ Collectors contain only a single day of data at any given time; database restoration is not supported on collectors.