Configuring port mirroring, Configuring port mirroring -33 – Compaq ProLiant Interconnect Switch User Manual

Page 69

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Configuring the GbE Interconnect Switch Using the Console Management Interface

Compaq ProLiant BL p-Class GbE Interconnect Switch User Guide

3-33

COMPAQ CONFIDENTIAL Codename: Vanilla Part Number: 263680-001 Last Saved On: 4/23/02 9:59 AM

Configuring Port Mirroring

The GbE Interconnect Switch allows you to copy frames transmitted and received on a port
and redirect the copies to another port. You can attach a monitoring device to the mirrored
port, such as a sniffer or an RMON probe, to view details about the packets passing through
the first port. This setting is useful for network monitoring and troubleshooting purposes.

NOTE: You cannot mirror a fast port onto a slower port. For example, if you try to mirror the traffic from
a 100-Mb/s port onto a 10-Mb/s port, you can cause throughput problems. The port from which you are
copying frames must support an equal or lower speed than the port to which you are sending the
copies. Also, the target port cannot be a member of a trunk group.

To configure port mirroring:

1. Highlight

Configure Port Mirroring on the Configuration menu.

2. Press

the

Enter key. The following screen is displayed.

3. In

the

Source Port field, toggle to the number of the port from which you want to copy

frames.

4. In

the

Source Direction field, toggle to the desired direction.

5. In

the

Target Port field, toggle to the port that receives the copies from the source port.

The target port is where you connect a monitoring or troubleshooting device such as a
sniffer or an RMON probe.

6. Toggle

the

Mirror Status field to Enabled.

7. Highlight

APPLY and press the Enter key.

NOTE: To save the configuration settings permanently, you must enter them into NVRAM using
the Save Changes option on the main menu. Refer to the “Saving Changes” section earlier in this
chapter.

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