Tuning Guidelines; Tuner Initialization; Nwwn Configuration - HP Cisco MDS 9020 - Fabric Switch 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 Guidelines

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 23, "Configuring and Managing
Managing
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.

Tuner Initialization

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)# san-ext-tuner enable
switch(config)# no san-ext-tuner
enable

nWWN Configuration

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 CLI Configuration Guide
41-4
Virtual N Port Configuration, page 41-5
SCSI Read/Write Assignment, page 41-5
SCSI Tape Read/Write Assignment, page 41-7
Configuring a Data Pattern, page 41-8
VSANs") to segregate the real initiators. Ensure that the zoning configuration is setup to allow
Chapter 41
Zones") or VSANs (see Chapter 19, "Configuring and
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-16184-01, Cisco MDS SAN-OS Release 3.x
Configuring the SAN Extension Tuner