How to check an AC's license

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Check an AC's license.
Run the display license command to check the license details. Pay attention to the following fields:
- License state: license state. In normal cases, the license is in Normal state.
- Control value: number of authorized resources
- License file ESN: ESN associated with the license file, which should be consistent with the AC's ESN
Run the display license resource usage command to check the license usage. ResourceUsage in the command output indicates the number of used or supported license files.

Other related questions:
How to combine the AC license
An AC's license controls the maximum number of online APs allowed on the AC. You can merge multiple license files to generate a new one. The following operations apply only to commercial licenses: 1. Collect the LAC, ESN, license file, and revocation code. 2. Clarify the license resource adjustment targets. 3. Send the preceding information to license@huawei.com to apply for license file merging.

How to change the AC license
You can transfer some licensed capabilities of ACs to other ACs for proper license resource allocation. The following operations apply only to commercial licenses: 1. Obtain the revocation codes and ESNs of all devices involved in license resource adjustment. 2. Clarify the license resource adjustment targets. 3. Send the preceding information to license@huawei.com to apply for license resource allocation.

How to activate the license on the AC
An AC's license controls the maximum number of online APs allowed on the AC. To activate the license, perform the following steps: CLI: 1. Upload a license file to the AC. 2. Run the license active filename command to activate the license. 3. Run the display license command to check the license status. Web platform: Log in to the web platform, and upload a license file on the License Management page. Click Activate. The license status includes: - Normal: indicates that the license is activated and in normal state. If the state of a commercial license is not Normal, rectify the fault. - Trial: indicates that the license is in Trial state. The possible causes are as follows: The ESN does not match when the license is activated: The license can be used for 60 days only. You must re-apply for a license that matches the ESN and reactivate it. The temporary license expires: You must apply for a formal license and reactivate it. The license file is invalid: You must apply for a new license based on the revocation code and reactivate it. - Demo: indicates that the license is in Demo state. After a temporary license file is loaded, the license state becomes Demo. In this case, the functions can work properly, but the license has a validity period. To continue to use functions controlled by this license, apply for a commercial license file before the temporary one expires. - Emergency: indicates that the license is in Emergency state. In commercial scenarios, if emergencies like earthquake, volcano explosion, and tsunami occur, you can run the license emergency command to enable the license to enter the emergency state. Release the license restriction within seven days, and enable the system to run with the maximum configurations. The emergency state can be enabled up to three times, lasting seven days each time. In addition, it cannot be manually disabled. - Default: indicates that the license is not activated or has expired. You must apply for a new license and activate it. If a license file enters the default state when it expires or becomes invalid, services may be interrupted.

How to split the AC license
A license file can be split into multiple ones as required. The following operations apply only to commercial licenses: 1. Obtain the revocation code and ESN of the license to be split, as well as the ESN of all involved ACs. 2. Clarify the license resource adjustment targets. 3. Send the preceding information to license@huawei.com to apply for a license file split.

How to check the U1900 license
1. Remotely log in to the device using Telnet or SSH. 2. Run the show license command.

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