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Tuner Configuration
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 34-2
Cisco MDS Switch
(Acts as initiator)
Figure 34-2
not a part of the FCIP link for which the throughput and latency is measured.
Figure 34-3
Cisco MDS Switch
To tune the required FCIP link, follow these steps:
Step 1
Configure the nWWN for the virtual N ports on the switch.
Step 2
Enable iSCSI on the interfaces on which you want to create the N ports.
Configure the virtual N ports on either side of the FCIP link.
Step 3
Ensure that the virtual N ports are not visible to real initiators in the SAN. You can use zoning (see
Step 4
Chapter 19, "Configuring and Managing
Managing
the virtual N-ports to communicate with each other.
Step 5
Start the SCSI read and write I/Os.
Add more N ports (as required) to other Gigabit Ethernet ports in the switch to obtain maximum
Step 6
throughput. One scenario that may require additional N ports is if you use FCIP PortChannels.
Cisco MDS 9000 Family Configuration Guide
34-4
N Port Tuning Configuration Physical Example
WAN or MAN
FCIP
link
N port
provides an sample logical setup in which the virtual N ports are created on ports that are
Logical Example of N Port Tuning for a FCIP Link
SAN Extension Tuner
GE 3/4
GE 3/3
VSANs") to segregate the real initiators. Ensure that the zoning configuration is setup to allow
Cisco MDS Switch
FCIP
link
N port
(Acts as target)
Cisco MDS Switch
N ports
GE 2/4
GE 2/3
FCIP
link
Zones") or VSANs (see
Chapter 34
Configuring the SAN Extension Tuner
Chapter 16, "Configuring and
OL-6973-03, Cisco MDS SAN-OS Release 2.x
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