ZTP+ Phases of Operation

This section describes how the device determines whether to use ZTP or ZTP+ for configuration.

Connection

Once the SLX device is connected to the network, it uses DHCP to obtain an IP address. After receiving an IP address and DNS information via DHCP, the device tries to connect to XMC using the following means:
  1. extremecontrol.<customerDomainName>
  2. devices.extremenetworks.com
  3. check DHCP options for original ZTP support
When an SLX device comes up in ZTP mode, the native ZTP state machine uses the following procedure to deterimine which method to use for configuration; ZTP or ZTP+.
  1. The CloudConnector plugin is launched in ZTP mode.
  2. The DHCP options and network configuration are received from the DHCP Server.
  3. If option 66 and 67 are received, proceed with native ZTP.
  4. If the CloudConnector module discovers XMC in the network, proceed with ZTP+.
  5. If option 66 and 67 are received but XMC is not discovered, then proceed with native ZTP state machine.
You can exit ZTP and ZTP+ mode at any point using the dhcp ztp cancel command.

The diagram below shows the ZTP to ZTP+ operational flow.

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ZTP to ZTP+ Operational Flow
Image describing the ZTP to ZTP+ Operational Flow

ZTP+ is functional only in the factory default or ZTP mode. On subsequent reboots with ZTP mode disabled, the CloudConnector will not be launched.