50. Tracing Let’s talk about an interesting topic called tracing. Tracing allows you to track events that occur on the Junos device. And this includes both normal operations and error conditions. Tracing is the Junos term for what other vendors call as debug. So if you worked on equipment from other vendors, you might have […]

47. Configuration Groups Let’s talk about an interesting topic called the configuration groups. So what is a configuration group? Well, a configuration group is a configuration snippet that can be applied to other parts of the configuration. So you would start by creating a configuration group containing configuration statements. And this can then be applied […]

44. Interface Naming Conversion Let’s understand the interface naming convention on a Junos device. Junos uses a standard naming convention for its interfaces, and most interfaces are named as type hyphen FBC Forward/Pich Forward/port type represents the type of interface which is gigabit Ethernet or Fast. Ethan Net FBC stands for Flexible Pig Concentrator. In […]

41. User Accounts Let’s now talk about user accounts, user accounts provide a way for users to access the Junos device. When you create a user account on a journalist device, a home directory gets assigned to the user. The path for which is/V.A./home,/the user name of the device. Normally, when you’re creating a user […]

38. Factory-default Configuration Let’s talk about the factory default configuration found on a Junos device. All platforms running Junos are shipped with a factory default configuration. So when you have a brand new Junos device, it is going to be running a factory default configuration. All factory default configurations allow access using the route account. […]

35. Junos Configuration Files Let’s talk about Junos configuration files. So in this video, we’ll talk about some of the file operations that we can perform, or in other words, we’ll look at some of the file commands that are available on a Junos device. So on a Junos device, we can use the command, […]

32. Configuration Hierarchy Let’s talk about the Junos configuration hierarchy. When we configured the Junos device, we have two options. We can choose to configure it from the top of the configuration hierarchy, which is the edit hierarchy at the top. Or we can choose to navigate into an item specific configuration hierarchy and configure […]

29. Active vs Candidate Configuration Let’s talk about an interesting concept called active configuration and candidate configuration. So, the configuration that is currently active on the Junos device is what is called as the active configuration. Some vendors also call this as running configuration. This is also the configuration that is loaded on a device […]

26. CLI Help Let’s talk about the help commands available on a Junos device primarily. There are three help commands. The first one is help topic. This shows you usage guidelines for a specific statement. Then we have help reference. This will show you summarized information about a specific statement. And third, we have helped […]

23. CLI Functionality Let’s start by talking about the Junos alive functionality. There’s a couple of ways by which you can access the Junos CLI. The first method is called out-of-band, and this uses the serial console port or a dedicated management port to connect with the device. A connection like this does not use […]