Cisco DS-X9530-SF1-K9 - Supervisor-1 Module - Control Processor Configuration Manual page 785

Chapter 35 Configuring iSCSI
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 .
To permanently keep the automatically assigned nWWN/pWWN mapping, follow these steps:
Command
Step 1
switch# config terminal
switch(config)#
Step 2s
switch(config)# iscsi save-initiator
name iqn.1987-02.com.cisco.initiator
switch(config)# iscsi save-initiator
ip-address 10.10.100.11
switch(config)# iscsi save-initiator
Step 3
switch(config)# exit
switch#
Step 4
switch# copy running-config
startup-config
Checking for WWN Conflicts
Prior to Cisco MDS SAN-OS Release 2.1(2), WWNs assigned to static iSCSI initiators by the system
can be inadvertently returned to the system when an upgrade fails or you downgrade the system software
(manually booting up an older Cisco MDS SAN-OS release without using the install all command). In
these instances, the system can later assign those WWNs to other iSCSI initiators (dynamic or static)
and cause conflicts.
As of Cisco MDS SAN-OS Release 2.1(2), you can fix this problem by checking for and removing any
configured WWNs that belong to the system whenever such scenarios occur.
To check for and remove WWN conflicts, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 1
switch(config)# iscsi duplicate-wwn-check
List of Potential WWN Conflicts:
--------------------------------
Node : iqn.test-local-nwwn:1-local-pwwn:1
nWWN : 22:03:00:0d:ec:02:cb:02
pWWN : 22:04:00:0d:ec:02:cb:02
Step 2s
switch(config)# iscsi initiator name
iqn.test-local-nwwn:1-local-pwwn:1
Step 3
switch(config-iscsi-init)# no static nWWN
22:03:00:0d:ec:02:cb:02
Step 4
switch(config-iscsi-init)# no static pWWN
22:04:00:0d:ec:02:cb:02
Proxy-Initiator Mode
In the event that the Fibre Channel storage device requires explicit LUN access control for every host
using the transparent initiator mode (presenting one iSCSI host as one Fibre Channel host) means every
iSCSI host has to be configured statically. This can mean several configuration tasks for each iSCSI host.
In this case, using the proxy-initiator mode simplifies the configuration.
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Purpose
Enters configuration mode.
Saves the nWWN and pWWNs that have automatically
been assigned to the iSCSI initiator whose name is
specified.
Saves the nWWN and pWWNs that have automatically
been assigned to the iSCSI initiator whose IP address
is specified.
Saves the nWWN and pWWNs that have automatically
been assigned to all the initiators.
Returns to EXEC mode.
Saves the nWWN/pWWN mapping configuration
across system reboots.
Purpose
Enters configuration mode.
Checks for WWN conflicts.
Enters iSCSI initiator configuration mode for the
initiator named iqn.test-local-nwwn:1-local-pwwn:1.
Removes a conflicting nWWN.
Removes a conflicting pWWN.
Cisco MDS 9000 Family Configuration Guide
Configuring iSCSI
35-15