Guidelines To Configure Rspan; St Port Characteristics - Cisco DS-C9216I-K9 Configuration Manual

Remote SPAN
Figure 30-9

Guidelines to Configure RSPAN

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

ST port have the following characteristics:
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Cisco MDS 9000 Fabric Manager Switch Configuration Guide
30-12
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 will be dropped.
The FC tunnel IP address must reside in the same subnet as the VSAN interface.
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 (the trunk protocol enable command is enabled by default).
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VSAN interface must be configured (the interface vsan command).
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The Fibre Channel tunnel feature must be enabled (the fc-tunnel enable command is disabled
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by default).
IP routing must be enabled (the ip routing command is 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 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.
ST ports perform the RSPAN encapsulation of the FC frame.
ST ports do not use BB_credits.
An ST port can only be bound to one FC tunnel.
ST ports cannot be used for any other purpose other than to carry RSPAN traffic.
Chapter 30 Monitoring Network Traffic Using SPAN
Cisco MDS 9000 switch
TE port
Cisco MDS
Fibre
Channel
fabric
VSAN 2
FC tunnel
SD port
RSPAN tunnel
Destination swtich
FC analyzer
OL-7753-01