Security - Secure Unique Device Identifier (SUDI)
SUDI is short for Secure Unique Device Identifier. When used in conjunction with TPM, it proves hardware origin and a hardware-derived secure boot process to prevent unauthorized code from running during the booting on a Cisco platform. The SUDI is an X.509v3 certificate that is actually stored in hardware on the device.
Links
https://forum.networklessons.com/t/cisco-sd-wan-vedge-onboarding/14899/30?u=lagapides