Juniper Networks J-Series manual Monitoring the Router and Routing Operations, Monitoring Terms

Chapter 7

Monitoring the Router and Routing Operations

J-series Services Routers support a suite of J-Web tools and CLI operational mode commands for monitoring system health and performance. Monitoring tools and commands display the current state of the router.

This chapter contains the following topics. For complete descriptions of CLI operational mode commands, see the JUNOS System Basics and Services Command Reference, the JUNOS Interfaces Command Reference, and the JUNOS Routing Protocols and Policies Command Reference.

■Monitoring Terms on page 101

■Monitoring Overview on page 101

■Before You Begin on page 106

■Using the Monitoring Tools on page 107

Monitoring Terms

Before monitoring J-series Services Routers, become familiar with the terms defined in Table 46 on page 101.

Table 46: J-series Monitoring Terms

TermDefinition

autonomous system (AS) Network of nodes that route packets based on a shared map of the network topology stored in their local databases.

Internet Control Message TCP/IP protocol used to send error and information messages.

Protocol (ICMP)

routing table Database of routes learned from one or more protocols.

Monitoring Overview

Use the J-Web Monitor and Manage options to monitor a Services Router. J-Web results are displayed in the browser.

Monitoring Terms ■ 101