Monitoring and Analyzing Switch Operation

Traffic Mirroring

Traffic Mirroring

Mirror Features

Feature

Default

Menu

CLI

Mirror CLI Quick Reference

n/a

n/a

B-45, B-47

Configure Mirror Source

disabled

page B-39

page B-49

Configure Mirror Destination at Source

disabled

page B-39

page B-52

Configure Remote Mirroring at Destination

disabled

n/a

page B-50

Display Mirror Configuration

n/a

page B-39

page B-76

 

 

 

 

Starting in software release K.12.xx, traffic mirroring (Intelligent Mirroring) allows you to mirror (send a copy of) network traffic received or transmitted on a switch interface to a local or remote destination, such as a traffic analyzer or intrusion detection system (IDS).

Traffic mirroring provides the following benefits:Allows you to monitor the traffic flow on specific source interfaces.

Helps in analyzing and debugging problems in network operation result­ ing from a misbehaving network or an individual client. The mirroring of selected traffic to an external device makes it easier to diagnose a network problemfromacentralizedlocationinatopologyspreadacrossacampus.

Supports remote mirroring to simultaneously mirror switch traffic on one or more interfaces to multiple remote destinations. (In remote mirroring, you must first configure the remote mirroring endpoint — remote switch and exit port — before you specify a mirroring source for a session.)

Mirroring destinations. Traffic mirroring supports destination devices that are connected to the local switch or a remote switch:

Traffic can be copied to a destination (host) device connected to the same switch as the mirroring source in a local mirroring session. You can configure up to four exit ports to which destination devices are connected in local mirroring sessions on a switch.

Traffic can be bridged or routed to a destination device connected to a different switch in a remote mirroring session. You can configure up to 32 remote mirroring endpoints (IP address and exit port) to which destina­ tion devices are connected in remote mirroring sessions on a switch.

B-28