HP 6120G/XG ProCurve Series 6120 Blade Switches Management and Configuration G - Page 493
Traffic Mirroring, Configuration, Notes
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Monitoring and Analyzing Switch Operation Traffic Mirroring Traffic Mirroring Mirror Features Feature Mirror CLI Quick Reference Configure Mirror Source Configure Mirror Destination at Source Display Mirror Configuration Default n/a disabled disabled n/a Menu CLI n/a B-34 page B-29 page B-35 page B-29 page B-35 page B-29 page B-38 Traffic mirroring (Intelligent Mirroring) allows you to mirror (send a copy of) network traffic received or transmitted on a switch interface to a local 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. Mirroring destinations. Traffic mirroring supports destination devices that are connected to the local switch: ■ Traffic can be copied to a destination connected to the same switch as the mirroring source in a local mirroring session. Up to four local mirroring destinations are supported on a switch. Configuration Notes Using the CLI, you can make full use of the switch's local mirroring capabili ties. Using the Menu interface, you can configure only local mirroring for a group of ports and/or static trunks. Only a single mirror port session is supported. Mirrored frames exceeding the allowed maximum transmission unit (MTU) size will be dropped. Also, the switch applies a 54-byte IPv4 header to mirrored frames. For more information, including the size limitation for jumbo and nonjumbo frames, see "Maximum Supported Frame Size" on page B-42. Selecting mirrored traffic. You can use any of the following options to select the traffic to be mirrored on a port or trunk interface in a local session: B-23
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