Juniper Networks M10i manual Junos Internet Software Overview, Routing Engine Software Components

Chapter 3

JUNOS Internet Software Overview

The JUNOS Internet 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 Internet 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 Internet 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 Internet software to monitor the protocol traffic passing through the router and to troubleshoot protocol and network connectivity problems.

For additional information about the JUNOS Internet 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 Internet software configuration guides.

NOTE: The router supports Release 6.1 and later versions of the JUNOS Internet software.

This chapter discusses the following topics:

■Routing Engine Software Components on page 25

■Tools for Accessing and Configuring the Software on page 32

■Tools for Monitoring the Software on page 32

■Software Upgrades on page 32

Routing Engine Software Components

The Routing Engine software consists of several software processes that control router functions and a kernel that coordinates communication among the processes, as described in the following sections:

Routing Engine Software Components ■ 25