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1. From the Cloud Services Portal, click Manage > Infrastructure > Hosts. 
2. Select the check box of the host on which you want to run the diagnostic tool.
3. Click  Host Actions > Troubleshoot, and then select one of the following tools. For each tool, you can click Download in the respective dialog to download the diagnostic results. All results are downloaded as a text file.
   
   • Traceroute: In the dialog, complete the following:
     • Target: Enter the target domain on which you want to execute the traceroute command. Example: csp.infoblox.com.
     • Port: Enter the port you use to communicate with the Cloud Services Portal.
     • Network Interface: Select the network interface you want to use to execute the traceroute command on the host. This allows you to capture all transmitted and received traffic over the selected interface. You can also view the routes and hops used for the host using the selected interface. Note that you can select only one interface at a time. If you do not select an interface, the traceroute command will be executed on all interfaces for the host. You cannot select a combination of interfaces.
     • Click Execute when you complete the configuration. Results are displayed in the Traceroute Results section. Note that the results support up to four hops.
   • DNS Test: The DNS Test tool is used to test the local resolver's connectivity and it's ability to resolve BloxOne Cloud endpoints. In the dialog, enter csp.infoblox.com as the Domain Name, and click Execute. Results are displayed in the DNS Test Results section. Note that this tool is used to confirm whether the BloxOne Cloud endpoints (such as csp.infoblox.com, cp.noa.infoblox.com, and others) are resolvable by the configured DNS local resolver. These domains must be resolved in order to connect to the cloud.
   • Traffic Capture: In the dialog, complete the following:
     • Timeframe: Select the timeframe for the traffic capture. A valid value is from 10 seconds to 10 minutes.
     • Source and Destination: Enter a valid IP address or FQDN for your source and target devices. These fields are optional.
     • Port: Enter the port you use to communicate with the Cloud Services Portal.
     • Service: Select the service you want to capture for the report. If you do not select any service, traffic for all services currently running on the host will be captured.

     • Network Interface: Select the network interface you want to use to execute the traffic capture operation. This allows you to capture all traffic over the selected interface. Note that you can select only one interface at a time. If you do not select an interface, the traffic capture will be executed on all interfaces for the host. You cannot select a combination of interfaces.
       

       Note
       title Note
       Note that the troubleshoot dialog remains open until the traffic capture operation is complete. Depending on the volume of traffic, this operation might take up to 10 minutes to complete. Once the traffic capture is complete, you can click Download to download the results.

       
       

   • NTP Test: When you select this option, the NTP test will be executed and the results displayed in the NTP Test Results section in the troubleshoot dialog. 
     

     Note
     title Note
     Check to verify that your NTP is properly configured on your machine. If not, configure NTP prior to running the diagnostic test. To configure NTP on ubuntu, run the following command: sudo apt-get install ntp

   • DNS Configuration File: This is available only if the DNS service is currently running on the selected host. The DNS config file is displayed in the troubleshoot dialog.
   • DHCP Configuration File: This is available only if the DHCP service is currently running on the selected host. The DHCP config file is displayed in the troubleshoot dialog.
     
   • Restart Host: Select this to restart the selected  host. In the confirmation dialog, click Confirm to restart a host. Only Admin users can restart a host. If your host is disconnected, you can restart the host using the host's local UI.

   • Routing Diagnostics: This is available only if the host is a BloxOne edge, running the BloxOne Service Edge service(s). In the Troubleshoot dialog, click Run Routing Diagnostics to view routing details of the BloxOne edge. You can click Download to export the diagnostics information to a .txt file.

   • Firewall Diagnostics: This is available only if the host is a BloxOne edge, running the BloxOne Service Edge service(s). In the Troubleshoot dialog, click Run Firewall Diagnostics to view firewall details of the BloxOne edge. You can click Download to export the diagnostics information to a .txt file.
   • Site-to-Site VPN Diagnostics: This is available only if the host is a BloxOne edge, running the BloxOne Service Edge service(s). In the Troubleshoot dialog, click Run Site-to-Site VPN Diagnostics to view site-to-site VPN details of the BloxOne edge. You can click Download to export the diagnostics information to a .txt file.

   Download DNS Cache File: This is available only if the DNS service is currently running on the selected host. Click Confirm to download the DNS cache.
   

   Warning
   DNS Cache: Depending on the traffic volume, it might take longer than expected to download the file.

   • Clear DNS Cache: Select this to clear DNS cache on the selected host. In the confirmation dialog, click Confirm to clear DNS cache. You can clear DNS cache only if you have applicable permissions to perform the task. This feature is available only if the DNS service is currently running on the selected host. You can also clear DNS cache from other places on the Cloud Services Portal. For more information, see Clearing DNS Cache.
   • GSS-TSIG: Select this to launch the Troubleshoot dialog and troubleshoot GSS-TSIG. In the Troubleshoot dialog, select one of the GSS-TSIG diagnostic commands and click Execute. For more information, see Troubleshooting GSS-TSIG.