If you cannot locate the source and potential resolution for a problem in the prior sections of this guide, then contact a Cisco customer service representative for information on how to best proceed with resolving the issue. For Cisco Technical Assistance Center (TAC), see the Cisco Information Packet publication that is shipped with your appliance or visit the following website:

http:/​/​www.cisco.com/​tac/​

Before you contact Cisco TAC, make sure that you have the following information ready:

• If your deployment is using a Cisco APIC-EM appliance(s), then the appliance chassis type and serial number.

• If your deployment is using a Cisco APIC-EM appliance(s), then the date you received the new Cisco APIC-EM appliance.

• The maintenance agreement or warranty information (see the Cisco Information Packet).

• The name, type of software, and version or release number (if applicable).

• A brief description of the problem or condition you experienced, the steps you have taken to isolate or re-create the problem, and a description of any steps you took to resolve the problem.

Note	Be sure to provide the customer service representative with any upgrade or maintenance information that was performed on the controller after your initial installation.