Monitoring Network Traffic Using SPAN
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
Fibre Channel traffic
IPS Source Ports
SPAN capabilities are available on the IP Storage Services (IPS) module. The SPAN feature is only
implemented on the FCIP and iSCSI virtual Fibre Channel port interfaces, not the physical Gigabit
Ethernet ports. You can configure SPAN for ingress traffic, egress traffic, or traffic in both directions for
all eight iSCSI and 24 FCIP interfaces that are available in the IPS module.
You can configure SPAN for Ethernet traffic using Cisco switches or routers connected to the Cisco MDS
9000 Family IPS modules.
Allowed Source Interface Types
The SPAN feature is available for the following interface types:
OL-16184-01, Cisco MDS SAN-OS Release 3.x
SPAN Traffic from Egress Direction
Cisco MDS 9000 switch
Physical ports such as F ports, FL ports, TE ports, E ports, and TL ports.
Interface sup-fc0 (traffic to and from the supervisor):
The Fibre Channel traffic from the supervisor module to the switch fabric through the sup-fc0
interface is called ingress traffic. It is spanned when sup-fc0 is chosen as an ingress source port.
The Fibre Channel traffic from the switch fabric to the supervisor module through the sup-fc0
interface is called egress traffic. It is spanned when sup-fc0 is chosen as an egress source port.
All ports in the PortChannel are included and spanned as sources.
You cannot specify individual ports in a PortChannel as SPAN sources. Previously configured
SPAN-specific interface information is discarded.
IPS module specific Fibre Channel interfaces:
Egress source port
Fibre Channel analyzer
Cisco MDS 9000 Family CLI Configuration Guide