Junos
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| Developer | Juniper Networks |
|---|---|
| OS family | Unix-like |
| Working state | Current |
| Source model | Closed source and partly open source |
| Initial release | July 7, 1998 |
| Latest release | 15.1R2 / November 20, 2015 |
| Available in | English |
| Userland | FreeBSD 10 |
| Default user interface | Command-line interface |
| License | Proprietary,FreeBSD License |
| Official website | www |
Junos OS (more formally Juniper Network Operating System) is the FreeBSD-based operating system used in Juniper Networks hardware routers. It is an operating system that is used in Juniper's routing, switching and security devices. Juniper offers a Software Development Kit (SDK) to partners and customers to allow additional customization. The biggest competitor of Junos is Cisco Systems' IOS.
Junos OS was formerly branded as Juniper Junos, and is commonly referred to as simply Junos, though this is a general brand name of Juniper Networks, including other product lines such as Junos Fusion.
Junos provides a single code base across most of Juniper's platforms. Juniper has issued a new release of Junos every 90 days since 1998.
Junos supports a variety of . With the introduction of the SRX and J-series (past version 9.3) platforms, it also supports "flow mode", which includes stateful firewalling, NAT, and IPSec. Its a flexible routing policy language that is used for controlling route advertisements and path selection.
Junos generally adheres to industry standards for routing and MPLS.
The operating system supports high availability mechanisms that are not standard to Unix, such as Graceful Restart.
Junos operating system is primarily based on FreeBSD. Because FreeBSD offers a Unix-like environment, customers can access a Unix shell and execute normal Unix commands. Junos runs on most or all Juniper hardware systems. After Juniper acquired NetScreen, it integrated ScreenOS security functions into its own Junos network operating system.
The Junos CLI is a text-based command interface for configuring, troubleshooting, and monitoring the Juniper device and network traffic associated with it. It supports two types of command modes.
The functions of Operational Mode include control of the CLI environment, monitoring of hardware status, and display of information about network data that passes though or into the hardware. The Configuration mode is used for configuring the Juniper router, switch, or security device, by adding, deleting, or modifying statements in the configuration hierarchy.
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