Tuning The Fcip Link; Enabling The Tuner; Configuring Nwwn - Cisco MDS 9000 series Configuration Manual

Configuring the SAN Extension Tuner
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
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Tuning the FCIP Link

To tune the required FCIP link, follow these steps:
Configure the nWWN for the virtual N ports on the switch.
Step 1
Enable iSCSI on the interfaces on which you want to create the N ports.
Step 2
Configure the virtual N ports on either side of the FCIP link.
Step 3
Step 4 Ensure that the virtual N ports are not visible to real initiators in the SAN. You can use zoning (see the
Cisco MDS 9000 Family NX-OS Fabric Configuration Guide) to segregate the real initiators. Ensure that
the zoning configuration is set up to allow the virtual N-ports to communicate with each other.
Start the SCSI read and write I/Os.
Step 5
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.

Enabling the Tuner

The tuning feature is disabled by default in all switches in the Cisco 9000 Family. When you enable this
feature, tuning is globally enabled for the entire switch.
To enable the tuning feature, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# feature
san-ext-tuner
switch(config)# no feature
san-ext-tuner

Configuring nWWN

To configure the nWWNs for the tuner in this switch, follow these steps:
Command
Step 1
switch# san-ext-tuner
switch(san-ext)#
Step 2
switch(san-ext)# nWWN 10:00:00:00:00:00:00:00
Cisco MDS 9000 Family NX-OS IP Services Configuration Guide
3-4
Configuring the Virtual N Port, page 3-5
Assigning the SCSI Read/Write, page 3-5
Assigning SCSI Tape Read/Write, page 3-7
Configuring a Data Pattern, page 3-8
Chapter 3
Purpose
Enters configuration mode.
Enables tuning.
Removes the currently applied tuning configuration and
disables tuning (default).
Purpose
Enters the SET configuration submode.
Configures the nWWN for the SAN
extension tuner.
OL-19525-01,Cisco MDS NX-OS Release 4.2(1)
Configuring the SAN Extension Tuner