Cisco 

Switch
https://supportforums.cisco.com/t5/network-infrastructure-documents/how-to-use-zero-touch-smartinstall/ta-p/3112248
https://www.cisco.com/c/en/us/td/docs/switches/lan/smart_install/configuration/guide/smart_install.html


Router
https://www.cisco.com/en/US/docs/ios/12_1t/12_1t5/feature/guide/dt_dhcpa.html
https://www.cisco.com/c/en/us/support/docs/wireless/4400-series-wireless-lan-controllers/111452-autoinstall-feature-wlc.html
(ap) https://www.cisco.com/c/en/us/support/docs/wireless/aironet-1200-series/113353-autoinstall-aap-config.html

voip
https://www.cisco.com/c/en/us/support/docs/voice-unified-communications/ip-communicator/113589-ar-ipc-cucm-00.html
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/8_5_1/ccmsys/accm-851-cm/a02tftp.html#wp1042446

o

Mikrotik
https://commotionwireless.net/docs/guides-howtos/installation-server-setup/

ubnt
https://help.ubnt.com/hc/en-us/articles/204959514-EdgeRouter-Last-Resort-Recovery
https://community.ubnt.com/t5/EdgeRouter/How-to-upload-configuration-to-edge-router-from-CLI/td-p/1888889
https://community.ubnt.com/t5/EdgeRouter/Official-TFTP-recovery-for-EdgeMAX-products-needed/td-p/1593478


f5
https://devcentral.f5.com/articles/f5-devops-libraries-simplify-big-ip-provisioning-reset-and-ha-pairing-21908
https://support.f5.com/kb/en-us/products/big-ip_ltm/releasenotes/clean_install_9_4_x.html


brocade
https://www.google.com/search?q=brocade+ztp&oq=brocade+ztp&aqs=chrome..69i64j5.1930j1j9&sourceid=chrome&ie=UTF-8
https://github.com/tbraly/campus_ztp


dell
http://www.dell.com/downloads/global/products/pwcnt/en/app_note_12.pdf


netgear
https://www.netgear.com/images/Application_Notes18-71326.pdf
https://kb.netgear.com/22688/How-to-upload-firmware-to-a-NETGEAR-router-using-TFTP


juniper
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/software-image-and-configuration-automatic-provisioning-confguring.html

huawei
http://support.huawei.com/enterprise/jp/doc/DOC1000086918