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
42-80
Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 42 Configuring iSCSI
iSNS
Once a profile is tagged to an interface, the switch opens a TCP connection to the iSNS server IP address
(using the well-known iSNS port number 3205) in the profile and registers network entity and portal
objects
; a unique entity is associated with each IPS interface
. The switch then searches the Fibre Channel
name server (FCNS) database and switch configuration to find storage nodes to register with the iSNS
server.
Statically mapped virtual targets are registered if the associated Fibre Channel pWWN is present in the
FCNS database and no access control configuration prevents it. A dynamically mapped target is
registered if dynamic target importing is enabled. See the
“Presenting Fibre Channel Targets as iSCSI
Targets” section on page 42-5
for more details on how iSCSI imports Fibre Channel targets.
A storage node is deregistered from the iSNS server when it becomes unavailable when a configuration
changes (such as access control change or dynamic import disabling) or the Fibre Channel storage port
goes offline. It is registered again when the node comes back online.
When the iSNS client is unable to register or deregister objects with the iSNS server (for example, the
client is unable to make a TCP connection to the iSNS server), it retries every minute to reregister all
iSNS objects for the affected interfaces with the iSNS server. The iSNS client uses a registration interval
value of 15 minutes. If the client fails to refresh the registration during this interval, the server will
deregister the entries.
Untagging a profile also causes the network entity and portal to be deregistered from that interface.
Note
The iSNS client is not supported on a VRRP interface.
Creating an iSNS Client Profile
To create an iSNS profile, follow these steps:
To remove an iSNS profile, follow these steps:
Command
Purpose
Step 1
switch#
config t
switch(config)#
Enters configuration mode.
Step 2
switch(config)#
isns profile name MyIsns
switch(config-isns-profile)#
Creates a profile called MyIsns.
Step 3
switch(config-isns-profile)#
server
10.10.100.211
Specifies an iSNS server IPv4 address for this
profile.
Step 4
switch(config-isns-profile)#
no
server
10.10.100.211
Removes a configured iSNS server from this
profile.
Step 5
switch(config-isns-profile)#
server 2003::11
Specifies an iSNS server IPv6 address for this
profile.
Step 6
switch(config-isns-profile)#
no
server
10.20.100.211
Removes a configured iSNS server from this
profile.
Command
Purpose
Step 1
switch#
config t
switch(config)#
Enters configuration mode.
Step 2
switch(config)#
no
isns profile name OldIsns
Removes a configured iSNS profile called
OldIsns.
Содержание 9124 - Cisco MDS Fabric Switch
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