Compaq ProLiant Interconnect Switch - Manual (Page 108)

Configuring the GbE Interconnect Switch Using the Web-Based Management Interface
4-12 Compaq ProLiant BL p-Class GbE Interconnect Switch User Guide
COMPAQ CONFIDENTIAL Codename: Vanilla Part Number: 263680-001 Last Saved On: 4/23/02 10:02 AM
Configuring Port Mirroring
When you select Port Mirroring from the Configuration menu, the following screen is
displayed.
The GbE Interconnect Switch allows you to copy frames transmitted and received on a port,
and to 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.
IMPORTANT: You cannot mirror a faster 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 you are
copying frames from should always support an equal or lower speed than the port to which you are
sending the copies. Also, the target port for mirroring cannot be a member of a trunk group. A target
port and a source port also cannot be the same port.
To configure a mirror port:
1. Select the Source Port from which you want to copy frames.
2. Select the Source Direction, either Ingress, Egress, or Either.
3. Select the Target Port that receives the copies from the source port. This is the port
where you would connect a monitoring or troubleshooting device, such as a sniffer or an
RMON probe.
4. Select Enabled in the Status field.
5. Click Apply.
NOTE: To save the configuration settings permanently, you must enter them into NVRAM using
the Save Changes option on the Maintenance menu. Refer to the section, “Saving Changes,”
earlier in this chapter.