Rspan Configuration Guidelines; St Port Characteristics - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 51 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
Figure 51-9

RSPAN Configuration Guidelines

The following guidelines apply for a SPAN configuration:
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ST Port Characteristics

ST ports have the following characteristics:
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OL-18084-01, Cisco MDS NX-OS Release 4.x
FC and RSPAN Tunnel
VSAN 2
Cisco MDS 9000 switch
Source swtich
ST port
All switches in the end-to-end path of the RSPAN tunnel must belong to the Cisco MDS 9000
Family.
All VSANs with RSPAN traffic must be enabled. If a VSAN containing RSPAN traffic is not
enabled, it is dropped.
The following configurations must be performed on each switch in the end-to-end path of the Fibre
Channel tunnel in which RSPAN is to be implemented:
Trunking must be enabled (enabled by default) and the trunk enabled link must be the lowest
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cost link in the path.
VSAN interface must be configured.
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The Fibre Channel tunnel feature must be enabled (disabled by default).
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IP routing must be enabled (disabled by default).
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If the IP address is in the same subnet as the VSAN, the VSAN interface does not have to
Note
be configured for all VSANs on which the traffic is spanned.
A single Fibre Channel switch port must be dedicated for the ST port functionality.
Do not configure the port to be monitored as the ST port.
The FC tunnel's IP address must reside in the same subnet as the VSAN interface.
See Chapter 44, "Configuring IP Services."
ST ports perform the RSPAN encapsulation of the FC frame.
ST ports do not use BB_credits.
Cisco MDS 9000 switch
TE port
Cisco MDS
Fibre
Channel
fabric
FC tunnel
SD port
RSPAN tunnel
Cisco MDS 9000 Family CLI Configuration Guide
Remote SPAN
Destination swtich
VSAN 2
FC analyzer
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