Configuring the Switch Modules using the Menu-driven Interface
Configuring Port Mirroring
The switch module allows you to copy frames transmitted and received on a port (source) and
redirect the copies to another port (target). You can attach a monitoring device to the
mirrored (target) port, such as a sniffer or an RMON probe, to view details about the packets
passing through the source port. This setting is useful for network monitoring and
troubleshooting purposes.
The following configuration rules apply to any port mirroring configuration:
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A target mirror port cannot be configured as a trunk member.
VLAN configuration settings for any ports configured for mirroring cannot be changed.
The source and target ports should be members of the same VLAN.
The direction of traffic on the source port can be one of the following:
Ingress traffic (received packets) on the source port
Egress traffic (transmitted packets) on the source port
Ingress and egress traffic on the source port
IMPORTANT: 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 should always 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.
HP ProLiant BL e-Class C-GbE Interconnect Switch Menu-driven Interface Reference Guide 2-37
HP CONFIDENTIAL Codename: DeLorean Part Number: 322858-001 Last Saved On: 2/4/03 11:56 AM
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