The JUNOS software is especially designed for the large production networks typically supported by Internet Service Providers (ISPs). It incorporates Internet Protocol (IP) routing software and software for management of interfaces, networks, and the router chassis.
The JUNOS software runs on the Routing Engine. The software consists of processes that support Internet routing protocols, control the router's interfaces and the router chassis itself, and provide an interface for system management. The processes run on top of a kernel that coordinates the communication among processes and has a direct link to the Packet Forwarding Engine software.
Use the JUNOS software to configure the routing protocols that run on the router and the properties of router interfaces. After you have activated a software configuration, use the JUNOS software to monitor the protocol traffic passing through the router and to troubleshoot protocol and network connectivity problems.
For additional information about the JUNOS software, including its security features and a list of the industry standards it supports, see the JUNOS System Basics Configuration Guide. For complete information about configuring the software, including examples, see the JUNOS software configuration guides.
This chapter discusses the following topics: