INTERPROVIDER OPTION B, ON JUNIPER JUNOS ROUTERS (INCLUDES FULL TOPOLOGY CONFIG
https://www.networkfuntimes.com/interprovider-option-b-on-juniper-junos-routers-includes-full-topology-config/
https://www.networkfuntimes.com/interprovider-option-b-on-juniper-junos-routers-includes-full-topology-config/