Cisco SN 5428-2 Storage Router Software Configuration Guide, Release 3.2
Chapter 7 - 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 the SN 5428-2 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 5428-2.

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 to create an instance of SCSI routing in an SN 5428-2 deployed for transparent SCSI routing are entered with the initial system configuration script. Option number 2 (transparent SCSI routing) must be chosen as the configuration deployment for the SN 5428-2 for the first question in the script.

The other parameter needed to create an instance of SCSI routing in an SN 5428-2 deployed for transparent SCSI routing is at least one IP address assigned to a Gigabit Ethernet interface. IP hosts access FC storage using this address.

The initial configuration script allows you to associate each Gigabit Ethernet interface with a unique IP address, or specify a single IP address that can be presented on either interface. If you configure a single IP address that can be presented on either interface, both Gigabit Ethernet interfaces must be connected to the same network segment.

Once all requested values have been entered and the script completes, a single SCSI routing instance named, transparent, is automatically created. The SN 5428-2 then initiates the target discovery process and creates an iSCSI logical target for each Fibre Channel target discovered.

Afterwards, the SN 5428-2 will discover new targets whenever any of the following occurs:

A new target or Fibre Channel switch or hub is added to the SN 5428-2.

cable is plugged in causing a loop initialization primitive LIP.

The SN 5428-2 is rebooted.

Verifying Configuration

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 7-1).

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 7-1 Verifying Configuration of Transparent SCSI Routing Instance

[SN5428-2A]# show scsirouter transparent
SCSI Router Information
Status Codes: A=active, I=inactive, C=create failed, D=not enabled, S=slave
                               CDB   Lun
Router               Stat Auth Retry Reset Description
-------------------- ---- ---- ----- ----- -----------
transparent          A    none 30    no    (not set)
 
SCSI Router Authentication Information
Router               Authentication  Username        Password
-------------------- --------------- --------------- --------
transparent          none            none            none
 
Router     ServerIf   Vlan Vid IP/Netmask                       Secondary  TCP Port SLP
---------- ---------- -------- -------------------------------- ---------- -------- ---
transparen ge1                 10.1.31.243/24                   none       3260     OFF
transparen ge2                 10.1.26.243/24                   none       3260     OFF
 
Target Attribute Information
                                     Accesslist Accesslist                               
Router     Target           Status   Read-Write Read-Only  Profile CRC        Description
---------- ---------------- -------- ---------- ---------- ------- ---------- -----------
transparen 2200002037a761c7 enabled  any        none       High    prefer-off (not set)
transparen 2200002037a7618f enabled  any        none       High    prefer-off (not set)
transparen 2200002037a7518d enabled  any        none       High    prefer-off (not set)
 
Target Mapping Information
Router     Target           Mapping    iSCSI Name 
---------- ---------------- ---------- -----------
transparen 21000020371912ee Tgt        eui.21000020371912ee
transparen 21000020371912a2 Tgt        eui.21000020371912a2
transparen 21000020371912a3 Tgt        eui.21000020371912a3
transparen 21000020371912d1 Tgt        eui.21000020371912d1
transparen 2100002037c59e27 Tgt        eui.2100002037c59e27
 
Targets - Target Mapped
Router     Target           WWPN Primary     WWPN Secondary  
---------- ---------------- ---------------- ----------------
transparen 21000020371912ee 21000020371912ee
transparen 21000020371912a2 21000020371912a2
transparen 21000020371912a3 21000020371912a3
transparen 21000020371912d1 21000020371912d1
transparen 2100002037c59e27 2100002037c59e27
 

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 fci1 iscsilogins

Display logged-in IP hosts and bound Fibre Channel targets on internal FC interface fci1 (Example 7-2).

Step 3 

show interface fci2 iscsilogins

Display logged-in IP hosts and bound Fibre Channel targets on internal FC interface fci2 (Example 7-3).

Example 7-2 Verifying Logged-in IP Hosts and Bound Fibre Channel Targets on fci1

[SN5428-2A]# show interface fci1 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.sn5428-4
              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 
 

Example 7-3 Verifying Logged-in IP Hosts and Bound Fibre Channel Targets on fci2

[SN5428-2A]# show interface fci2 iscsilogins
Initiator        Target                        IP Host
     ALPA  portID  State       WWPN         IP address  IP Host Name
  0   ef                 290000023d0712c0   10.0.5.208  iqn.1987-05.com.cisco.00.sn5428-4
           203e1     6   2200002037a7c100 
           203ef     6   2200002037a7c3f9 
  1   e8                 290100023d0712c0   10.0.5.10  iscsi.cisco.snow110
           20101     6   210000d0b20036a0 
           202e4     6   21000080e5118ab2 
  2   e4                 290200023d0712b0   10.0.5.12  iscsi.cisco.snow112
           20101     6   210000d0b20036c0 
           203d9     6   2200002037a7a0c5 
           203da     6   2200002037b99fzf 
  3   e2                 290300023d0712c0   10.0.5.15  iscsi.cisco.snow115
           20101     6   210000d0b20036d0 
           202e4     6   21000080e5118ag2 
  4   e1                 290400023d0712g0   10.0.5.17  iscsi.cisco.snow117
           20101     6   210000d0b20036g0 
  5   e0                 290500023d0712n0   10.0.5.18  iscsi.cisco.snow118
           20101     6   210000d0b20036v0 
  6   dc                 290600023d0712e0   10.0.5.27  iscsi.cisco.snow127
           20101     6   210000d0b20036a0 
  7   da                 290700023d0712c0   10.0.5.28  iscsi.cisco.snow128
           20101     6   210000d0b20036d0 
 

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. This port is not available to IP hosts. The port's IP address is the one assigned to the SN 5428-2 management interface, and its IP host name is the system name of the SN 5428-2 with "iqn.1987-05.com.cisco.00." preceding it.

Initiators 1 to 62 (1 to 31 on each port) are used for IP hosts that are logged in. For instance in Example 7-2, 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 7-4.)

Example 7-4 Verifying Discovered Targets

[SN5428-2A]# show devices
Fabric Attached Devices detected
Interface WWPN             PortId   Device Type     Lun   Lunid Type        Lunid
--------- ---------------- -------- --------------- ----- ----------------- -----
fc1       22000004cf4304cd 0x101e2  DASD            0     IEEE Extended     200f
fc1       2200002037559b0e 0x101e1  DASD            0     IEEE Extended     200b
 
Lun Description Table
Interface WWPN             Lun   Capacity Vendor       Product      Serial
--------- ---------------- ----- -------- ------------ ------------ ------
fc1       22000004cf4304cd 0     17GB     SEAGATE      ST318452FC   3EV0N8B4000M
fc1       2200002037559b0e 0     17GB     SEAGATE      ST318451FC   3EV0N7CW0002