Packet Mirroring; Overview; Chapter 6 Packet Mirroring - Juniper E320 Configuration Manual

Chapter 6

Packet Mirroring

Overview

Packet mirroring enables you to send a copy of a packet to an external host for
analysis. Packet mirroring has many uses, including traffic debugging and
troubleshooting user networking problems.
This chapter contains the following sections:
! Overview on page 147
! Platform Considerations
! References on page 151
! Configuring CLI-Based Packet Mirroring
! Configuring RADIUS-Based Mirroring
! Conflicts Between CLI-Based and RADIUS-Based Configurations
! Understanding the Prepended Header
! Resolving and Tracking the Analyzer Device's Address
! Using Multiple Triggers
! Optimizing Packet Mirroring Performance
! Logging Packet Mirroring Information
! Monitoring Packet Mirroring
The JUNOSe software provides two methods that you can use to configure and
manage your packet mirroring environment—CLI-based and RADIUS-based.
! CLI-based packet mirroring—An authorized user uses the router's CLI
commands to configure and manage packet mirroring. You can mirror traffic
related to a specific IP or L2TP interface or traffic related to a particular user.
You also use CLI commands to create secure policies that identify the traffic to
be mirrored and specify how the mirrored traffic is treated.
on page 151
on page 151
on page 165
on page 174
on page 177
on page 178
on page 180
on page 186
on page 174
on page 177
Overview
! 147