Multicasting - IBM BladeCenter Installation And User Manual

You can attach a monitoring device to the mirrored port, such as a sniffer or an
RMON probe, to view details about the packets that pass through the first port. This
is useful for network monitoring and troubleshooting purposes.
The default setting for port mirroring is Disabled.
Select Mirroring in the main menu to access the following window:
To configure a mirror port, enter the port from where you want to copy frames in the
Source Port field, and the Ingress and/or Egress port in the appropriate Target
Port field(s). The source port must be one of the four external ports (Ext1, Ext2,
Ext3, or Ext4). The target port must be one of the four external ports (Ext1, Ext2,
Ext3, or Ext4).
Finally, toggle the Mirroring Status field to Enabled, highlight APPLY, and press
Enter.
Notes:
1. You should not mirror a faster port or higher traffic ports on to a slower port. For
2.

Multicasting

Select Multicasting on the main menu to access the following window:
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IBM BladeCenter 4-Port Gb Ethernet Switch Module: Installation and User's Guide
example, if you try to mirror the traffic from a 100 Mbps port onto a 10 Mbps
port, this 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.
Port mirroring is not possible if you use the same egress and ingress target
port.