14. junos traceoptions configuration

Junos traceoptions is the same as the debugging tools from Cisco and many other vendors. You can use the traceoptions feature to monitor the device background process and traffic to and from the Juniper device.
Traceoptions is a critical tool in troubleshooting, but it takes up a lot of disk space and needs to be enabled when needed and disabled after troubleshooting is complete.

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12. Junos Primary and Preferred Address

Junos Interface Initial Configuration includes configuring both physical properties and logical properties. IP address configuration is part of interface logical configuration.
When you configure multiple IP addresses in Juniper devices, opposite to cisco devices, they are not replaced but all addresses will be added to the device.
Now the question is which address will be used as the source address when packets are originated from that interface. Junos Primary and Preferred address is the answer to this question.

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9. juniper initial configuration

The initial configuration of Juniper devices is the first step after purchasing a Juniper device. Initial configuration typically means enabling root authentication which is required, configuring a hostname and management IP address, and enabling SSH or Telnet remote access. It can also be a good idea to configure domain names, name servers, time zones and NTP servers.
We will also learn how to revert back to the default factory configuration or erase all configuration and data files to reconfigure the juniper device from scratch.

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