Understanding Zero Touch Provisioning in Network Director
Zero touch provisioning allows you to provision new Juniper Networks switches in your network automatically—without manual intervention. When you physically connect a switch to a network and boot it with the factory-default configuration, the switch attempts to upgrade the Junos OS software automatically and autoinstall a configuration file from the network. Use the Zero Touch Provisioning wizard to create a profile that applies all the configurations to a Dynamic Host Configuration Protocol (DHCP) server that you configure. You can apply one or more profiles to a DHCP server.
After you enable zero touch provisioning for a DHCP server that is part of a given subnet in your network, and connect a new switch to that subnet, the following series of events occurs:
The switch contacts the DHCP server to obtain an IP address. The DHCP server assigns an IP address to the switch. The DHCP server also passes on the location of the software image, and the configuration file to the switch. This information is passed on to the DHCP server from Network Director when you create and save a zero touch provisioning profile.
The switch uses this information to locate the software image, and the configuration file. These files are stored in an FTP, TFTP, or an HTTP server.
The switch then upgrades the operating system version by using the software image and loads the configuration file.
You can use zero touch provisioning to provision EX Series switches to run Junos OS Release 12.3R5 and 13.3 only. If a switch is provisioned with any other Junos OS Release, then Step 4 is not applicable. You must manually discover the switch from Network Director to be able to manage it.
After a successful upgrade, the switch sends out an trap message to Network Director to announce that a new switch has been deployed in the network. If the trap message is successfully received, Network Director adds the switch to the Network Director’s inventory. This eliminates the need to manually discover new devices that are added to your switching network.
if the SNMP trap that the switch sends to Network Director does not reach the destination, then Network Director does not know about the new device and the device will not be added to the Network Director’s inventory. In such a scenario, you must manually discover the new device from Network Director.
For more information on zero touch provisioning for switches, see Understanding Zero Touch Provisioning.