Junos

您可以在Wikipedia上了解到此条目的英文信息 Junos Thanks, Wikipedia.

Junos 是一款可靠的高性能网络操作系统，提供了强大的路由、交换与安全性能，能够显著加快新服务的部署速度，并将网络运营成本降低高达 41%。该操作系统提供了安全编程接口和 Junos SDK，旨在开发出能够充分发挥网络价值的应用。

Junos软件

Junos 软件是一款系统，设计用于完全重构网络的工作方法。

• 它是一款操作系统：可以降低规划、部署和运营网络基础架构所需投入的时间与精力。
• 它只需一次培训：按照固定时间间隔稳定推出新的功能。
• 它是一种模块化软件架构：提供了高度可用、且可扩展的软件，确保能够满足不断变化的需求。

Juniper Junos 基于 FreeBSD 核心构建。

Junos Operating System Architect

Junos Operating System Architect includes two components: Routing Engine (RE) and the packet forwarding engines (PFE)

The Routing Engine (RE) runs Junos Software, which includes the FreeBSD kernel, and the software processes, that is, daemons. Junos includes these key user daemons:

• Device control daemon (DCD)
• Routing protocol daemon (RPD)
• Chassis daemon (chassisd)
• Management daemon (MGD)
• Traffic sampling daemon (sampled)
• Automatic protection switching daemon (APSD)
• Simple network management protocol daemon (SNMPD)
• System logging daemon (syslogd)

The Packet Forwarding Engine performs Layer 2 and Layer 3 switching, route lookups, and rapid forwarding of packets. Connected to the Routing Engine by an Ethernet cable, the PFE includes the backplane (or midplane), Protocol Field Compression (PFC), physical interface cards (PICs) and the control board (switching/forwarding), and it has a central processing unit (CPU) that runs the microkernel.

Links

• http://demand-juniper.net/junos/
• https://simplifymydatacenter.com/ibm
• http://docs.huihoo.com/junos/

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