Can the U1981 allow users to collect the equipment serial numbers (ESNs) of all boards by one click?

For the USG6000, you can run the display esn command to view the ESN of an MPU. For the USG9500, you can run the display esn all command to view the ESNs of all components.

Equipment Serial Number (ESN): uniquely identifies a device. When applying for a new license, you must provide the AC's ESN. The ESN bound with the license must be consistent with that of the AC; otherwise, the license is in Trial state. Check the ESN of an AC or an AP using either of the following methods: - Run the display esn command to check the ESN of the AC and AP. - Check the ESN on the barcode label attached on the surface of the device. The corresponding field of the AC is SN, and that of the AP is PROD ID. Each AC or AP has a unique ESN.

You can obtain the ESNs of OceanStor T Series as follows: Method 1: Check the device label. Method 2: Log in to the ISM and obtain the ESNs from the basic device information.

The U1900 license is associated with the SN of the subrack. Replacing the main control board or other boards does not affect the ESN and therefore does not require a new license.