Device IDs

A device ID is a unique 16-byte number used to uniquely identify a device within OEM Cloud.

Most device IDs are derived from the device MAC address, IMEI number, or ESN number. If a device does not have an assigned MAC, IMEI, or ESN, OEM Cloud generates and assigns a random 16-byte number for the device ID. See System-generated device IDs for more information.

Note In resource web services, device IDs are listed as devConnectwareId elements. See the Digi Remote Manager Programmer Guide.

Device ID Assignments

A device ID is derived from the unique information from the device, in the order specified in the list below.

1. The Ethernet interface MAC-48. See Device IDs based on MAC addresses.
2. The 802.11 interface MAC-48. See Device IDs based on MAC addresses.
3. The cellular modem IMEI for GSM devices. See Device IDs based on GSM IMEI.
4. The cellular modem ESN (Electronic Serial Number) for CDMA devices. See Device IDs based on CDMA addresses.
5. The auto-generated format. See System-generated device IDs.

For example, if a device has an Ethernet interface and a cellular modem, the device ID is generated from the Ethernet interface. If a device contains multiple interfaces of one type (such as two Ethernet interfaces), a primary interface is selected and used as the source of the device ID.

Full-length device IDs

The full-length device ID is specified as four groups of eight hexadecimal digits separated by dashes. For example:

01234567-89ABCDEF-01234567-89ABCDEF

Abbreviated device IDs

Device IDs can also be specified in an abbreviated form, without the leading groups of zeros. The following table shows how some device IDs can be abbreviated.

Full device ID	Abbreviated forms
00000000-89ABCDEF-01234567-89ABCDEF	89ABCDEF-01234567-89ABCDEF
00000000-00000000-01234567-89ABCDEF	00000000-01234567-89ABCDEF 01234567-89ABCDEF
01234567-89ABCDEF-01234567-89ABCDEF	No abbreviated form
00000000-00000000-00000000-89ABCDEF	00000000-00000000-89ABCDEF 00000000-89ABCDEF 89ABCDEF