---
title: "Checking NetMRI Collectors Operation"
canonical: "https://docs.infoblox.com/space/NetMRI753/42076988/Checking%20NetMRI%20Collectors%20Operation"
format: markdown
---
> ⚠️ **Note**
> ⚠️ 
> ⚠️ This information applies to NetMRI Operations Center installations only.

The **Tunnels ****and ****Collectors** page (**Settings** icon > **Setup** > **Tunnels**** and**** Collectors**) provides information about all collectors that are defined within a NetMRI Operations Center installation. A network consists of one or more Operations Center collectors. Each collector connects to the Operations Center through an encrypted tunnel.

The **Status** column in the table indicates collector statuses. For Operations Center collectors, the status you want to see is **Connected**.

You may change the data that appears in the **Tunnels**** and**** Collectors** table by choosing different columns of data. Useful information includes the following information:

|  |  |
| --- | --- |
| **VPN**** Address** | Lists the tunnel endpoint IP address assigned to each collector. |
| **Network**** Name** | The name of the network for the Operations Center. |
| **Connected ****From** | This is the actual administrative IP address of the collector. Indicates the actual endpoint IP address and TCP port number across which the collector is tunneling (using its associated VPN endpoint). |
| **Bytes**** Received** and **Bytes**** Sent** | Lists the total amount of data received by, and sent by, each collector during its entire active period in the OC. |

Collectors also have Licensing limits, corresponding to those described in the topic *<span style="color: #0000ff">[Understanding](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)*<span style="color: #0000ff">[Platform](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)*<span style="color: #0000ff">[Limits,](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)</span>**<span style="color: #0000ff">[Licensing](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)*<span style="color: #0000ff">[Limits](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)*<span style="color: #0000ff">[and](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)*<span style="color: #0000ff">[Effective](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)</span>*[ ](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)*<span style="color: #0000ff">[Limits](https://infoblox-docs.atlassian.net/wiki/spaces/NetMRI753/pages/42272369)</span>*. The **Tunnels ****and ****Collectors** page lists the following information:

|  |  |
| --- | --- |
| **Device ****Limit** | Shows the maximum device license count for the collector–the number of devices the collector is licensed to manage. (This value does not apply to discovered device counts, which can be higher.) The value in this column corresponds to an Effective Device Limit for the collector. |
| **Licensed ****Devices** | The number of consumed device licenses for the listed collector. The difference between this value and the Device Limit represents the number of device licenses remaining available to the collector appliance. |

To view a collector's event logs, do the following:

1. Click the **Actions** icon and then choose **Log ****Messages**.
2. Click **Yes**. When the log is available, it appears in a window.

To obtain and send technical data from any collector for troubleshooting purposes, do the following:

1. Click the **Actions** icon and then choose **Send** **Support** **Bundle**.
2. In the **Send Support Bundle** dialog box, complete the following:
  1. Select the transfer mode.
  2. Select one or more data categories. Sending technical data requires at least one category selection.
  3. Click **Start**.