User Manual
Table Of Contents
- Contents
- Figures
- Tables
- Preface
- Section I
- Basic Operations
- Chapter 1
- Basic Switch Parameters
- Chapter 2
- Port Parameters
- Chapter 3
- SNMPv1 and SNMPv2c
- Chapter 4
- MAC Address Table
- Chapter 5
- Static Port Trunks
- Chapter 6
- Port Mirroring
- Section II
- Advanced Operations
- Chapter 7
- File System
- Chapter 8
- File Downloads and Uploads
- Chapter 9
- Event Logs and the Syslog Client
- Chapter 10
- IGMP Snooping
- Section III
- SNMPv3
- Chapter 11
- SNMPv3
- Configuring the SNMPv3 Protocol
- Enabling or Disabling SNMP Management
- Configuring the SNMPv3 User Table
- Configuring the SNMPv3 View Table
- Configuring the SNMPv3 Access Table
- Configuring the SNMPv3 SecurityToGroup Table
- Configuring the SNMPv3 Notify Table
- Configuring the SNMPv3 Target Address Table
- Configuring the SNMPv3 Target Parameters Table
- Configuring the SNMPv3 Community Table
- Displaying the SNMPv3 Tables
- Displaying the User Table Entries
- Displaying the View Table Entries
- Displaying the Access Table Entries
- Displaying the SecurityToGroup Table Entries
- Displaying the Notify Table Entries
- Displaying the Target Address Table Entries
- Displaying the Target Parameters Table Entries
- Displaying the SNMPv3 Community Table Entries
- Section IV
- Spanning Tree Protocols
- Chapter 12
- Spanning Tree and Rapid Spanning Tree Protocols
- Section V
- Virtual LANs
- Chapter 13
- Port-based and Tagged VLANs
- Section VI
- Port Security
- Chapter 14
- 802.1x Port-based Network Access Control
- Index
Chapter 6: Port Mirroring
80 Section I: Basic Features
Overview
The port mirror feature allows you to unobtrusively monitor the ingress or
egress traffic on one or more ports on a stack by copying the traffic to
another stack port. By connecting a network analyzer to the port where the
traffic is being copied to, you can monitor the traffic on the other ports
without impacting network performance or speed.
The port(s) whose traffic you want to mirror is called the source port(s).
The port where the traffic will be copied to is called the destination port.
Observe the following guidelines when creating a port mirror:
A stack can have only one destination port.
You can mirror more than one source port at a time. However, the
destination port may have to discard packets if the source ports are
very active.
The destination and source ports can be located on different switches
in the stack.
You can mirror the ingress or egress traffic of the source ports, or both.