Cisco SN 5420 Storage Router Software Configuration Guide, Release 2.1
Chapter 6 - Configuring Transparent SCSI Routing
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Configuring Transparent SCSI Routing

Table Of Contents

Configuring Transparent SCSI Routing

Prerequisite Tasks

Summary of Configuration Process

Verifying Configuration


Configuring Transparent SCSI Routing


This chapter explains the configuration process for a transparent SCSI routing deployment of your SN 5420 Storage Router and provides procedures to verify the configuration. It contains the following sections:

Prerequisite Tasks

Summary of Configuration Process

Verifying Configuration

Transparent SCSI routing is configured with the values entered with the initial system configuration script. To verify the configuration, use the CLI commands as described in this chapter. The web-based GUI is not available for transparent SCSI routing, since this deployment option requires minimal configuration of the SN 5420.

Prerequisite Tasks

Before verifying the transparent SCSI routing configuration, make sure you have configured all system parameters as described in "First-Time Configuration," or "Configuring System Parameters."

Summary of Configuration Process

The configuration parameters needed for a transparent SCSI routing deployment of the SN 5420 Storage Router are entered with the initial system configuration script. Option number 2 (transparent SCSI routing) must be chosen as the configuration deployment for the SN 5420 for the first question in the script. The other parameter needed for a transparent SCSI routing deployment is the IP address assigned to the Gigabit Ethernet interface.

Once all requested values have been entered and the script completes, a single SCSI routing instance named, transparent, is automatically created, and the topology for the Fibre Channel interface is set to loop. The SN 5420 then initiates the target discovery process and creates an iSCSI logical target for each Fibre Channel target discovered.

Afterwards, the SN 5420 will discover new targets whenever any of the following occurs:

A new target or Fibre Channel switch or hub is powered on.

A cable is plugged in.

The SN 5420 is rebooted.

Verifying Configuration

Verify the configuration for transparent SCSI routing using the procedures that follow.

Use the following procedure to verify the configuration of the SCSI routing instance.

 
Command
Description

Step 1 

enable

Enter Administrator mode.

Step 2 

show scsirouter transparent

or

show scsirouter all

Display configuration for SCSI routing instance (Example 6-1).

Note As shown in the second command, you can type the keyword, all, as a shortcut, instead of the SCSI routing instance name, transparent.

Example 6-1 Verifying Configuration of Transparent SCSI Routing Instance

[SN5420]# show scsirouter transparent
transparent description "(not set)"
transparent authenticate "none"
transparent target naming authority "none"
transparent target log level is "notification"
transparent serverif ge2 10.1.0.33/24
transparent deviceif fc1 
transparent target 2100005028b64d1a description "(not set)"
transparent target 2100005028b64d1a WWUI "eui.2100005028b64d1a"
transparent target 2100005028b64d1a enabled "TRUE" 
transparent target 2100005028b64d1a accesslist "all" 
transparent target 2100005028b64d1a wwpn "2100005028b64d1a" 
transparent target 2100005028b6431c description "(not set)"
transparent target 2100005028b6431c WWUI "eui.2100005028b6431c"
transparent target 2100005028b6431c enabled "TRUE" 
transparent target 2100005028b6431c accesslist "all" 
transparent target 2100005028b6431c wwpn "2100005028b6431c" 
transparent target 2100005028b64d0a description "(not set)"
transparent target 2100005028b64d0a WWUI "eui.2100005028b64d0a"
transparent target 2100005028b64d0a enabled "TRUE" 
transparent target 2100005028b64d0a accesslist "all" 
transparent target 2100005028b64d0a wwpn "2100005028b64d0a" 


Use the following procedure to verify logged-in IP hosts and bound Fibre Channel targets.

 
Command
Description

Step 1 

enable

Enter Administrator mode.

Step 2 

show interface fc1 iscsilogins

Display logged-in IP hosts and bound Fibre Channel targets (Example 6-2).

Example 6-2 Verifying Logged-in IP Hosts and Bound Fibre Channel Targets

[SN5420]# show interface fc1 iscsilogins
Initiator      Target                        IP Host
     ALPA  portID  State       WWPN       IP address   IP Host Name
0   ef                 200000023d070740   10.1.10.244  iqn.1987-05.com.cisco.00.sn5420
              e0     6   2100005028b64d1a 
              dc     6   2100005028b6431c 
              b6     6   2100005028b64d0a 
  1   e8                 200100023d070740   10.0.5.159  iqn.1987-05.com.cisco.02.9FD38900B2FAC8E036D3D3.NT10
              e0     6   2100005028b64d1a 
              dc     6   2100005028b6431c 
              b6     6   2100005028b64d0a 
  2   e4                 200200023d070740   10.0.5.226  iqn.1987-05.com.cisco.02.B826B52E725BAFA5CAB913.NT9
              e0     6   2100005028b64d1a 
              dc     6   2100005028b6431c 
              b6     6   2100005028b64d0a 
  3   e2                 200300023d070740   10.0.5.112  iqn.1987-05.com.cisco.02.16E9C60D686BC79113C401.WIN1
              e0     6   2100005028b64d1a 
              dc     6   2100005028b6431c 
              b6     6   2100005028b64d0a 


The following explains the Initiator and State fields:

Initiator

Initiator 0 is reserved for the primary initiator port. This port performs the discovery of the target devices—the same devices that appear in the show devices command. The port is not available to IP hosts. The port's IP address is the one assigned to the SN 5420 management interface, and its IP host name is the system name of the SN 5420 with "iqn.1987-05.com.cisco.oo." preceding it.

Initiators 1 to 31 are used for IP hosts that are logged in. For instance in Example 6-2, IP host, NT10, is bound to initiator port 1 with WWPN 200100023d070740.

State

Login state:
0 and 1—(not used)
2—PLOGI request has queued to request queue
3—PLOGI response has been received
4—PLOGI response received and PRLI request queued to request queue
5—PRLI response received
6—PRLI ACC received (login successful)
7—Initial port state (not logged in)
8—LOGO is queued to request queue
9—LOGO has been transmitted


Use the following procedure to verify discovered targets.

 
Command
Description

Step 1 

enable

Enter Administrator mode.

Step 2 

show devices

Display discovered targets (Fibre Channel devices). (Example 6-3.)

Example 6-3 Verifying Discovered Targets

[SN5420]# show devices
Private/Public Loop Devices detected:

lunwwn:wwpn:loopid:lun:vendor:product:serial
2000005028b64d1a        2100005028b64d1a        5       0        SEAGATE        ST318451FC         3
CC0383K00007110JGVD
2000005028b6431c        2100005028b6431c        6       0        SEAGATE        ST318451FC         3
CC037BS00007110CFU8
2000005028b64d0a        2100005028b64d0a        28      0        SEAGATE        ST318451FC         3
CC0304300007110JRX0
Fabric Attached Devices detected:
lunwwn:wwpn:portId:lun:vendor:product:serial
NONE