Dell SmartFabric OS10 User Guide Release 10.5.3

Upgrade OS10 automatically using ZTD

The ZTD process is enabled by default and starts an automatic discovery process, similar to the ONIE discovery process.

ZTD starts the Dynamic Host Configuration Protocol (DHCP) client on all the interfaces, including management and front-panel ports. ZTD sends DHCP discovery packets with DHCP option 60 (vendor-class specifier) on all the interfaces and listens for the DHCP offer. The DHCP server responds with Option 240 in its response (the DHCP offer). Option 240 includes the valid OS10 image and configuration files. The system proceeds with ZTD, installs OS10 image, and executes the configuration files.

The ZTD auto discovery runs continuously until any of the discovery methods complete or you cancel the ZTD process manually using the ztd cancel command or you enter into the CONFIGURATION mode.

Example: OS10 automatic installation

<165>1 2021-11-07T09:20:04.313553+00:00 OS10 dn-app-ztd 835 
- - Node.1-Unit.1:PRI [event], Dell EMC (OS10) %ZTD-START: DHCP callback 
received, starting Zero Touch Deployment

After ZTD completes, use the show ztd-status command to view the ZTD status. A message similar to the following one appears:

OS10# show ztd-status

-----------------------------------
ZTD Status     : disabled
ZTD State      : completed
Protocol State : idle
Reason         : ZTD process completed successfully at Sun Nov 7 09:42:52 2021
-----------------------------------

For more information about how to automate switch deployment, see Zero-touch deployment.