Using Diagnostic Tools

J Series Services Routers and SRX Series Services Gateways support a suite of J-Web tools and CLI operational mode commands for evaluating system health and performance. Diagnostic tools and commands test the connectivity and reachability of hosts in the network.

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.

For information about which devices support the features documented in this chapter, see the Junos OS Feature Support Reference for SRX Series and J Series Devices.

This chapter contains the following topics.

• Diagnostic Terms
• Diagnostic Tools Overview
• Before You Begin
• Pinging Hosts from the J-Web Interface
• Checking MPLS Connections from the J-Web Interface
• Tracing Unicast Routes from the J-Web Interface
• Capturing and Viewing Packets with the J-Web Interface
• Using CLI Diagnostic Commands