Understanding Span - HP Cisco MDS 9216 - Fabric Switch Configuration Manual

S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
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:
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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 merely 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
Figure 9-1
Fibre Channel traffic
For information on configuring SPAN, refer to the Cisco MDS 9000 Family CLI Configuration Guide.
OL-8007-10, Cisco MDS SAN-OS Release 3.x
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
9-1).
SPAN Transmission
SPAN source port
fc3/1
Cisco MDS 9000 switch
C H A P T E R
Fibre Channel traffic
fc1/2
Fibre Channel analyzer
fc9/1
SD port
Cisco MDS 9000 Family Fabric Manager Configuration Guide
9
9-1