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How to Configure Junos OS Devices with J-web
Devices running Junos can be configured using the Command Line Interface (CLI) or the graphical user interface (GUI), J-web. While each option has individual strengths, there are some advantages to using [more…]
Found in: Junos OS -
Basics of Junos Command-Line Interface (CLI) and J-web
There are two management interfaces available in Junos: the Command Line Interface (CLI) and the graphical user interface (GUI), known as J-web. Together, they provide a powerful management platform for [more…]
Found in: Junos OS -
Connect Juniper Hardware to the Junos OS
After you install the hardware, you are ready to configure the Junos OS beyond the factory-default settings (which are not really adequate for real-world situations). To do this, you have to connect to [more…]
Found in: Junos OS -
How to Set Up Out-of-Band Remote Management on Junos Devices
Out-of-band management is handled through special management interfaces on Juniper Networks devices. These interfaces are Fast Ethernet interfaces located on the front of all Juniper Networks devices. [more…]
Found in: Junos OS -
How to Set Up the SRX Services Gateway
The most common way to configure a newly installed Juniper SRX Services Gateway is by using the RJ-45 serial console port. After all, someone has to actually be at the device to install it [more…]
Found in: Junos OS -
Routers that Run Junos
Juniper offers routing platforms running Junos for branch and regional offices, corporate sites and data centers, along with the metro, edge, and core sites of service provider networks. The decision of [more…]
Found in: Junos OS -
How to View Junos Syslog Messages
In the default syslog configuration on the Junos router, logs are saved to a file called messages, which resides in the default log file directory. On M-, MX-, and T-series routers, the default log file [more…]
Found in: Junos OS -
Ten Help Resources for Junos OS
This is a top-ten list of go-to sources to find more about software operations, training, and support for Junos — all the extra details that you may need to help you configure and operate Junos OS in your [more…]
Found in: Junos OS -
How to Rack, Configure, and Attach Devices to a Juniper EX Series Switch
Before you can configure the EX switch for VLANs and other features, you have to rack the switch, configure it, and attach other devices to it. Juniper switches ship in individual shipping crates. All [more…]
Found in: Junos OS -
Junos Default Security Settings
Junos OS has a number of default behaviors that contribute to router security, behaviors that immediately take effect once you perform the initial router configuration. [more…]
Found in: Junos OS -
How to Assign Forwarding Classes to Queues in Junos
When classifying traffic, you must match the traffic and assign that traffic to a queue. The branch routers (J-series routers) support up to eight different queues, numbered 0 through 7. By default, the [more…]
Found in: Junos OS -
Junos for IOS Users
The Junos OS command line interface (CLI) has many built-in tools to guide you while you master its commands and structure. If you already know a command language for another network operating system, [more…]
Found in: General Administration & Networking -
Overview of Juniper Network’s Junos Space
Junos Space provides multiple applications for operating your network. Among these are three tools specifically designed to automate and ease troubleshooting and maintenance activities for high network [more…]
Found in: Junos OS -
How to Restart and Request System-wide Functions with Junos
The operational mode of Junos network operating system provides commands for restarting and resetting individual processes as well as rebooting the device and upgrading its system software. [more…]
Found in: Junos OS -
Collapse Switching Layers with Junos to Optimize Switching Infrastructure
If your organization is consolidating or redesigning data centers, even building a new one, or modernizing your campus network, you may be thinking about new ways to optimize the switching infrastructure [more…]
Found in: Junos OS -
The Function of the Three Planes of Junos Network OS
The architecture of the Junos operating system cleanly divides the functions of control, services, and forwarding into different planes. Each of the planes of Junos OS provides a critical set of functionality [more…]
Found in: Junos OS -
The Many Benefits of Junos’ Modular Architecture
Have you had a router continually reboot, and on the console, you see an error occurred in a single nonessential process? With the Junos OS, you don’t see that problem. [more…]
Found in: Junos OS -
Use Good Safety Practices when Installing Network Equipment
The importance of following safety protocols can’t be overstated. If proper precautions are not taken, severe harm to personnel or the device can result. Follow these guidelines to ensure your safety and [more…]
Found in: Junos OS -
Configure the Management and Loopback Interfaces
The major characteristic of network devices is that they have network interfaces, and usually more than one. Routers can have literally hundreds and so can large switches. The Junos OS supports many types [more…]
Found in: Junos OS -
How to See Whether a Junos Interface Is Working
If you just want to see whether an interface on a Junos device is operational, you can start with the Junos OS show interfaces brief command: [more…]
Found in: Junos OS -
Junos Commands to Monitor Routing and Routers
The show route command output lists the active entries in the routing table, along with some basic information for each route. For each route, you see route, route prefix, and the following: [more…]
Found in: Junos OS -
How to Summarize Junos Routing Information
Sometimes you may just want a quick summary of the routing information on your router. As an example, you have just configured OSPF in your network, and you’re expecting to see a certain number of OSPF [more…]
Found in: Junos OS -
How to Configure Real-time Performance Monitoring in Junos
The Junos OS supports a tool called real-time performance monitoring (RPM). RPM essentially is a set of tests, run periodically, that help you measure the latency between two devices on a network. [more…]
Found in: Junos OS -
How to Set the Time and Time Zone on Junos Devices
To accurately know what (and when) events happen on a single device, it needs to have the correct time and time zone. On a whole network, all the devices must have the same time, especially when you’re [more…]
Found in: Junos OS -
How to Configure the Default VLAN on Junos Switches
When you power on smaller Juniper EX models (or an individual EX 4200 that isn’t part of a Virtual Chassis unit), bridging is enabled on all the interfaces [more…]
Found in: Junos OS
