Monitoring And Diagnosing A Services Router; Monitoring And Diagnostic Terms - Juniper J2300 User Manual

Chapter 10
Monitoring and Diagnosing a Services
Router

Monitoring and Diagnostic Terms

Table 69: J-series Monitoring and Diagnostic Terms
Term
autonomous system (AS)
Don't Fragment (DF) bit
J-series Services Routers support a suite of J-Web tools and CLI operational mode
commands for monitoring and managing system health and performance.
Monitoring tools and commands display the current state of the router. Diagnostic
tools and commands test the connectivity and reachability of hosts in the network.
This chapter contains the following topics. For complete descriptions of CLI
operational mode commands, see the JUNOS Protocols, Class of Service, and
System Basics Command Reference and the JUNOS Network and Services Interfaces
Command Reference.
Monitoring and Diagnostic Terms on page 197
Monitoring and Diagnostic Tools Overview on page 198
Before You Begin on page 203
Using the Monitoring Tools on page 203
Using J-Web Diagnostic Tools on page 218
Using CLI Diagnostic Commands on page 226
Before monitoring and diagnosing J-series Services Routers, become
familiar with the terms defined in Table 69.
Definition
Network of nodes that route packets based on a shared map of the network topology stored in
their local databases.
Bit in the IP header that instructs routers not to fragment a packet. You might set this bit if
the destination host cannot reassemble the packet or if you want to test the path maximum
transmission unit (MTU) for a destination host.
Monitoring and Diagnostic Terms
197