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9-1
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-17256-03, Cisco MDS NX-OS Release 4.x
9
Cisco Traffic Analyzer
Cisco Traffic Analyzer is a version of network top (ntop) software that is modified to support Fibre
Channel and SCSI.
This chapter contains the following sections:
• Understanding SPAN, page 9-1
• Using Cisco Traffic Analyzer with Performance Manager, page 9-2
• Installing Cisco Traffic Analyzer, page 9-3
• Accessing Traffic Analyzer from Fabric Manager Web Server, page 9-5
Understanding SPAN
The SPAN feature is specific to switches in the Cisco MDS 9000 Family. It monitors network traffic
though a Fibre Channel interface. Traffic through any Fibre Channel interface can be replicated to a
special port called the SPAN destination port (SD port). Any Fibre Channel port in a switch can be
configured as an SD port. Once an interface is in SD port mode, it cannot be used for normal data traffic.
You can attach a Fibre Channel analyzer to the SD port to monitor SPAN traffic.
SD ports do not receive frames, they transmit a copy of the SPAN source traffic. The SPAN feature is
nonintrusive and does not affect switching of network traffic for any SPAN source ports (see
Figure 9-1).
Figure 9-1 SPAN Transmission
For information on configuring SPAN, refer to the Cisco MDS 9000 Family CLI Configuration Guide.
Fibre Channel traffic
Fibre Channel traffic
Fibre Channel analyzer
fc9/1
fc3/1
fc1/2
SPAN source port
SD port
Cisco MDS 9000 switch
85478
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