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Release Notes for Cisco SN 5428 Storage Router Release 3.3.2

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Release Notes for Cisco SN 5428 Storage Router Release 3.3.2

Table Of Contents

Release Notes for Cisco SN 5428 Storage Router Release 3.3.2

Contents

Introduction

System Requirements

Network Equipment

IP Hosts

Graphical User Interface

iSCSI Driver Version Support

Interoperability Information

Installation Notes

Obtaining Updated Software and iSCSI Drivers

Determining the SN 5428 Software Version

Upgrading to a New Software Release

Uninstalling an Upgrade

Limitations and Restrictions on SN 5428 Storage Router Clusters

Important Notes

Caveats

Open Caveats

FC-Driver

FC-Switch

GUI

SCSI

Resolved Caveats

CLI

Documentation Updates

Related Documentation

Release-Specific Documents

Platform-Specific Documents

Hardware Documents

Software Documents

Service and Support

Software Configuration Tips on the Cisco TAC Home Page

Obtaining Documentation

Cisco.com

Documentation CD-ROM

Ordering Documentation

Documentation Feedback

Obtaining Technical Assistance

Cisco.com

Technical Assistance Center

Cisco TAC Website

Cisco TAC Escalation Center

Obtaining Additional Publications and Information


Release Notes for Cisco SN 5428 Storage Router Release 3.3.2


June 25, 2003


Note You can find the most current documentation on Cisco.com. This set of electronic documents may contain updates and modifications made after the hard-copy documents were printed.


These release notes support Cisco SN 5428 Storage Router software release 3.3.2.

For a list of software caveats that apply to Release 3.3.2, see the "Caveats" section. The caveats are updated for every maintenance release and are located on Cisco.com and the Documentation CD-ROM.

Contents

These release notes describe the following topics:

Introduction

System Requirements

Installation Notes

Limitations and Restrictions on SN 5428 Storage Router Clusters

Important Notes

Caveats

Documentation Updates

Related Documentation

Service and Support

Obtaining Documentation

Obtaining Technical Assistance

Obtaining Additional Publications and Information

Introduction

The Cisco SN 5428 Storage Router provides universal access to storage over IP networks. The storage router software controls the operation of the Cisco SN 5428 Storage Router. You can configure the software to provide one of two types of access to storage over IP networks; either SCSI routing or Transparent SCSI routing.

SCSI routing provides IP hosts with access to Fibre Channel (FC) storage devices, using iSCSI protocol. The iSCSI protocol is an IETF-defined protocol for IP storage (ips).


Note For more information about the iSCSI protocol, refer to the IETF standards for IP storage at http://www.ietf.org.


With SCSI routing, storage device access is managed primarily in the SN 5428. (See Figure 1.)

Figure 1 SCSI Routing

Transparent SCSI routing provides IP hosts with transparent access to intelligent storage arrays using iSCSI protocol; that is, each IP host is presented as an FC host to an intelligent storage array. With transparent SCSI routing, availability of storage devices is managed primarily in the intelligent storage array. (See Figure 2.)

Figure 2 Transparent SCSI Routing

In addition to providing services for accessing storage over IP networks, the SN 5428 Storage Router software provides the following services:

VLAN Access Control—provides IP access control to storage based on a VLAN identifier (VID) number (in addition to access control through access lists)

Authentication—provides iSCSI, Enable and Login authentication using AAA authentication methods

High Availability (HA)—provides the ability to group storage routers in a cluster for intelligent failover and other cluster-related functions (for SCSI routing only)

E_Port with FC Fabric Zoning—provides the ability to connect FC ports to FC switches and participate in fabric zoning, manage zoning, and support zone mergers

SNMP/MIB support—provides network management of the SN 5428 through SNMP using selected MIBs

Gigabit Ethernet Interface features—provides the ability to assign a management IP address per Gigabit Ethernet interface, multiple IP addresses per SCSI routing instance, and an optional secondary Gigabit Ethernet interface per IP address used for SCSI routing or SN 5428 management

Buffer credit extension—enables the SN 5428 to donate buffer credits from a donor port to selected FC ports

Secure Sockets Layer support—provides HTTPS connection for secure access through the web-based GUI

Secure Shell (SSH) protocol version 2 support—provides high encryption and authentication for interactive management sessions, and is a common replacement for Telnet

Routing Information Protocol (RIP) listening support—allows the SN 5428 to learn dynamic routing using RIP (version 1 or version 2) listening

Service Location Protocol (SLP) Support—provides the ability to advertise targets of specified SCSI routing instances

TCP Window Tuning—provides the ability to maximize bandwidth across the network by automatically setting the local TCP receive window size to the remote TCP receive window size without user intervention

A command-line interface (CLI) and a web-based GUI—provides user interfaces for configuration and maintenance of an SN 5428


Note The web-based GUI is not available in SN 5428s deployed for transparent SCSI routing.


System Requirements

This section describes the system requirements for release 3.3.2 and includes the following information:

Network Equipment

IP Hosts

Graphical User Interface

iSCSI Driver Version Support

Interoperability Information

Network Equipment

The Gigabit Ethernet interfaces on the SN 5428 Storage Router use a flow control mechanism for stopping and starting traffic that prevents the loss of data. Flow control should also be turned on at the router's Gigabit Ethernet interfaces where the SN 5428 Storage Router is connected.

If the SN 5428 Storage Router is participating in a cluster, and the HA or management interfaces are plugged into a switch that has Spanning Tree Protocol (STP) enabled, the storage router should be considered as an end station and the affected ports on the switch should be configured appropriately. For example, set "portfast" on Cisco switches to cause the ports to immediately switch from blocking mode to forwarding mode. This helps prevent time-outs, which can cause unexpected behavior when storage routers join a cluster.

IP Hosts

To ensure the best performance for the SN 5428 Storage Router and the iSCSI drivers, the extended windowing feature of TCP and the receive and transmit flow control feature of the Gigabit Ethernet driver should be enabled on all IP hosts connecting to the SN 5428. On the SN 5428 Storage Router, you can use the CLI show scsirouter all connection tcp command to display the current and maximum TCP window size for each connected host.

Graphical User Interface

The SN 5428 Storage Router web-based GUI officially supports the following browsers:

Browser
Platform

Microsoft Internet Explorer version 5.5 with service pack 2, or later

Microsoft Windows NT 4.0, Microsoft Windows 2000

Netscape Navigator version 4.76

Linux

Netscape Navigator version 4.7

Sun Solaris


The browser must be enabled to support JavaScript and style sheets.


Note With certain versions of Microsoft Internet Explorer 6, the links in the left frame may fail to function after performing a remote backup. If this occurs, click on the Maintenance menu link at the top of the page to reactivate the links.


iSCSI Driver Version Support

A Cisco SN 5428 Storage Router running software release 3.3.2 or later is interoperable with an IP host running any Cisco iSCSI Driver version 2.1.1 or later. It is not interoperable with an IP host running any Cisco iSCSI Driver version 1.8.x.

A Cisco SN 5428 Storage Router running software release 3.3.2 or later is also interoperable with a Cisco SN 5420 Storage Router deployed for iSCSI SAN Interconnect.

Interoperability Information

SN 5428 interoperability information is available on Cisco.com. You can access the interoperability matrix by following these instructions:


Step 1 At http://www.cisco.com, click Products & Services, and select Storage Networking Products from the menu.

Step 2 At the Cisco Storage Networking Products web page, click the Cisco SN 5400 Series Storage Routers link.

Step 3 At the Cisco SN 5400 Series Storage Routers web page, click Technical Documentation from the navigation menu on the left side of the page.

Step 4 Click the Technical References link, and then click the Cisco SN 5428 Storage Router Interoperability Test Matrix link.


Installation Notes

This section describes how to obtain updated SN 5428 software and upgrade an existing SN 5428 software installation, and includes the following information:

Obtaining Updated Software and iSCSI Drivers

Determining the SN 5428 Software Version

Upgrading to a New Software Release

Uninstalling an Upgrade

Obtaining Updated Software and iSCSI Drivers

Registered Cisco.com users can download the most current SN 5400 Series system software, Cisco iSCSI drivers, readme files and release notes from Cisco.com. In addition, information about driver compatibility and other relevant driver information is available on Cisco.com. You can access software and related information by following these instructions:


Step 1 At http://www.cisco.com, log in to Cisco.com. Click Technical Support and Software Center.

Step 2 At the Software Center web page, under Software Products & Downloads, click Storage Networking Software.

Step 3 At the Storage Networking Software web page, click the appropriate link for your software.

Step 4 At the Software Download web page, click the file that you want to download. Another software download web page will be displayed with detailed information about the download file and Cisco's Software License Agreement. Follow the instructions on that and any subsequent web pages to download the software.

Step 5 To install and configure storage router software, see the appropriate storage router software configuration guide and release notes. To install and configure an iSCSI driver, see the readme file that accompanies the iSCSI driver (in the downloaded driver archive file) and the appropriate release notes.


Configuration guides and release notes are available online. You can access online documentation by following these instructions:


Step 1 At http://www.cisco.com, click Products & Services and Storage Networking Products.

Step 2 At the Cisco Storage Networking Products web page, click Cisco SN 5400 Series Storage Routers.

Step 3 At the Cisco SN 5400 Series Storage Routers web page, click Technical Documentation. On the Technical Documentation web page, choose the appropriate link for documentation, release notes, or other related information.


Determining the SN 5428 Software Version

To determine the version of SN 5428 software running on the Cisco SN 5428 Storage Router, establish a Telnet or console port session with the storage router, and enter the CLI show version command. (See Example 1.)

The Application field displays the version of software currently running on the storage router. The System Bootstrap field displays the software version that will run the next time the storage router is restarted.

You can also check the version of the SN 5428 software by using the SN 5428 web-based GUI. Log in as monitor to display the Processor and Software Information table, or click Processor and SW (under System) in the Monitor dynamic menu list in the left frame. The Software Version field contains the current software version information.

Example 1 Determining the Software Version

[SN5428-A01]$ show version
Cisco SN 5428 Storage Router
 
         CLI Version: 2.1
       iSCSI Version: 0/2 (Min/Max)
    System Bootstrap: 3.3.2-K9
    Operating System: 3.3.2-K9
      Switch Version: V1.4.0.43-0
         Application: 3.3.2-K9
          Web Server: R6_1_0
             OpenSSH: 3.4p1
             OpenSSL: 0.9.6e
                Zlib: 1.1.4
 
Copyright (c) 1986-2002 by Cisco Systems, Inc

Upgrading to a New Software Release


Note To upgrade to SN 5428 software release 3.3.2, your storage router must currently be running software version 2.5.1 or later.


For information about upgrading to new SN 5428 software using the CLI, see the section "Installing Updated Software" in Chapter 10, "Maintaining and Managing the SN 5428 Storage Router," of the Cisco SN 5428 Storage Router Software Configuration Guide, Release 3.3.

To upgrade to new SN 5428 software using the web-based GUI, follow these instructions.


Step 1 In the web-based GUI, log in as "admin". To access the GUI, enter the URL for the SN 5428 by pointing your browser to the SN 5428 management interface IP address using the HTTP protocol (for example, type http://10.1.10.244).

Step 2 Click Maintenance to view information about the software versions currently available to the storage router. If multiple versions of software are available, delete all versions except the currently running version.

Step 3 (Optional) Based on your storage router configuration, click the appropriate link in the Upgrade section of the Maintenance dynamic menu list in the left frame to download a list of currently available software versions. Use this list to determine the software version you want to download.

Step 4 Click the appropriate link in the Upgrade section of the Maintenance dynamic menu list to download the desired version of software.

Step 5 After you have downloaded the new version of software, click Reset in the System section of the Maintenance dynamic menu list.

Step 6 At Select next boot version, select the new software version. If you have made configuration changes to the storage router that have not been saved, click the Save unsaved changes? checkbox to save any configuration changes that have been made but not saved to the storage router's bootable configuration

Step 7 Click Reset System.

Step 8 After the storage router has rebooted, verify that it is running the new software. (See the "Determining the SN 5428 Software Version" section.)


If the storage router is deployed for transparent SCSI routing, the upgrade from version 2.5.1 or 3.2.x to version 3.3.2 places the storage router in dynamic mode. Dynamic mode resets iSCSI client-to-FC WWPN bindings upon reboots or iSCSI logouts, and requires an intelligent storage array that supports an extended iSCSI FC PLOGI frame. To change the mode of an existing transparent SCSI routing deployment, you must completely clear the storage router configuration. When the storage router reboots, follow the prompts from the initial configuration script to complete the new system configuration and select the desired mode for transparent SCSI routing.

For more information about clearing the storage router configuration, see the section "Resetting the System" in Chapter 10, "Maintaining and Managing the SN 5428 Storage Router," of the Cisco SN 5428 Storage Router Software Configuration Guide, Release 3.3.

For more information about static and dynamic modes for transparent SCSI routing, see the section "Summary of Configuration Process" in Chapter 7, "Configuring Transparent SCSI Routing," of the Cisco SN 5428 Storage Router Software Configuration Guide, Release.3.3.

Uninstalling an Upgrade


Note Static mode for transparent SCSI routing is not supported in any version of software prior to 3.3.1.


To return to a previous SN 5428 software release and remove the updated SN 5428 software using the CLI, follow these instructions:

 
Command
Description

Step 1 

enable

Enter Administrator mode

Step 2 

show software version all

Verify that the previous version of SN 5428 software is still available. If it is not, see the section "Installing Updated Software" in Chapter 10, "Maintaining and Managing the SN 5428 Storage Router," of the Cisco SN 5428 Storage Router Software Configuration Guide, Release 3.3.

Step 3 

software version 3.3.1

Select the software to be booted when the system next starts; for example, boot version 3.3.1 when the system restarts. This may take several minutes.

Step 4 

reboot

Reboot the SN 5428 Storage Router.


Caution Do not use the reboot fast command. Downgrading software requires a reboot with diagnostics.

Step 5 

enable

Enter Administrator mode after the SN 5428 reboots.

Step 6 

show version

Verify that the SN 5428 Storage Router is now running the correct software.

Step 7 

delete software version 3.3.2

(Optional) Remove the updated software from the SN 5428 Storage Router.

To return to a previous SN 5428 software release and remove the updated SN 5428 software using the SN 5428 web-based GUI, follow these instructions:


Step 1 In the web-based GUI, log in as "admin". To access the GUI, enter the URL for the SN 5428 by pointing your browser to the SN 5428 management interface IP address using the HTTP protocol (for example, type http://10.1.10.244).

Step 2 Click Maintenance to display the dynamic Maintenance menu list in the left frame.

Step 3 Click Reset from the dynamic Maintenance menu list.

Step 4 Click the Select next boot version drop-down arrow to view the list of available software versions. Choose the version of software to run when the system is booted.

Step 5 (Optional) To save configuration changes before rebooting, check the Save unsaved changes checkbox. If the checkbox is not checked, any unsaved configuration changes will be lost.

Step 6 Click Reset System.

Step 7 After the SN 5428 reboots, verify that it is running the selected software. (See "Determining the SN 5428 Software Version" section.)

Step 8 (Optional) Click Maintenance and then click the Delete link to the right of the updated software in the Show Storage Router Software table to remove it from the SN 5428 Storage Router.


Limitations and Restrictions on SN 5428 Storage Router Clusters

This release includes the following restrictions on SN 5428 Storage Router clusters:

A cluster can be composed of up to two SN 5428 Storage Routers, or one SN 5428 and one SN 5428-2 Storage Router.

A cluster can support up to 12 SCSI routing instances.

A cluster can support up to 100 iSCSI targets.

Important Notes

The SN 5428 Gigabit Ethernet ports, GE 1 and GE 2, can use either MT-RJ small form-factor pluggable (SFP) modules or LC SFP modules. The Cisco product numbers for those SFP modules are listed as follows:

MT-RJ SFP module - Cisco Product Number SN-SFP-GEMM-MTRJ

LC SFP module - Cisco Product Number SN-SFP-FCGEMM-LC

The availability of the MT-RJ SFP modules may be limited; if they are unavailable, you can use LC SFP modules in place of the MT-RJ modules. If you are using LC SFP modules in place of MT-RJ SFP modules, make sure that you use the appropriate cable. For example, if you are connecting an LC SFP module in an SN 5428 to an MT-RJ connector in an external end system, switch, or router, you would need a cable with an LC connector at one end and an MT-RJ connector at the other end.

Caveats

Caveats describe unexpected behavior or defects in the specified SN 5428 software release. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious.

This document describes open and resolved severity 1 and 2 caveats and selected caveats of other severities, for release 3.3.2.

The "Open Caveats" section lists caveats that are open in the current release and may be open in previous releases.

The "Resolved Caveats" section lists caveats that are resolved in this release, but open in previous releases.

Within the sections, the caveats are sorted alphanumerically by caveat number.


Note If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity for any release. You can reach Bug Navigator II on Cisco.com at Service & Support:
http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl.


Open Caveats

The caveats listed in this section are open in SN 5428 software release 3.3.2.

FC-Driver

CSCea72301

The host aborts pending SCSI commands that fail to complete within the timeout period, and SCSI Read commands complete with Data Underrun conditions. This problem may occur when SCSI traffic is running over an E-port between two storage routers and the target device is connected to the fabric via an arbitrated loop. This problem has been observed with target devices that use half-duplex OPNs to the storage router when sending frames to the initiator.

The server may automatically recover from these errors, so they may only appear as intermittent performance issues.

Workaround: If possible, change the target device connection topology to point-to-point instead of arbitrated loop.

CSCea75379

The storage router is unable to send or receive traffic on the FC interface that is bridged to an iSCSI interface. The interface immediately closes all attempted Opens from other devices on the arbitrated loop. The FC interface erroneously believes that it is unable to accept frames from any device on the loop.

This condition has been observed when a large number of SCSI commands from the iSCSI interface are aborted. This results in a large number of ABTS frames on the FC interface.

Workaround: Disconnect and reconnect the storage router FC initiator interface, or restart the initiator interface. For example, issue the following command to restart the fci1 interface:

[SN5428A] debug interface fci1 lldRestartfcfw

FC-Switch

CSCdx80621

SNMP Walks of the FCMGMT MIB may result in the following error:

%SNMP-3-FSSPRQF: fcSwSnmpPktReqeust() failed.

The Network Management tool(s) may report "Generic error" and the fail the MIB walk. This can occur when there are many devices.

Workaround: Use the GUI Monitor Fibre Channel page or the CLI show interface command to display fibre channel interface information.

CSCea71673

The storage router is unable to send or receive traffic on the FC interface, because the interface is caught in a loop initialization state. This condition has been observed in conjunction with a large number of ABTS frames on the loop.

Workaround: Disconnect and reconnect the storage router FC interface or reset the interface. For example, issue the following commands to reset the fc1 interface:

[SN5428A] no interface fc1 enable
[SN5428A]* interface fc1 enable

CSCeb02063

The integrated FC switch software may hang the port after the timeout, instead of aborting the frame. The port may hang if a frame cannot be delivered in the configured error detect timeout value (edtov). The port hang would only occur if error detect timeout value for all Fibre Channel interfaces is set to a value other than 1200 milliseconds. The default setting is 2000 milliseconds.

Workaround: If unexplained port hangs occur, set the error detect timeout value to 1200. For example, issue the following CLI command:

[Lab1] fcswitch edtov 1200

You may need to change the error detect timeout values on other devices in your fabric. Error detect timeout values should be the same for all storage routers or switches in the fabric.

GUI

CSCdy06532

SN 5428 software download fails when using the HTTP Put File function from Microsoft Internet Explorer version 5.5 with service pack 2. The user may receive a "page cannot be displayed error" or the download may appear to hang. This is bug in Microsoft Internet Explorer.

Workaround: Use Microsoft Internet Explorer 6.0 to download SN 5428 software using the HTTP Put File function.

SCSI

CSCin43529

Compaq SecurePath Manager software does not work with iSCSI and an MSA1000. This configuration is not currently supported.

Workaround: None.

Resolved Caveats

The caveats listed in this section are resolved in SN 5428 software release 3.3.2.

CLI

CSCdy05687

Event messages may appear during the initial configuration script or following a clear conf all command. This may make it difficult to complete the script, since event messages may overwrite the last question on the screen. Automated scripts may fail unexpectedly, since no prompt is returned after an event message.

Workaround: If the unit is being configured manually, you can usually get the last question to repeat by simply hitting the Enter key. If you have lost your place in the script and want to start over, Ctrl-C will restart the script. There is no workaround for an automated script except to be careful that nothing is going on in the network that would cause messages to appear on the console (for example, other units rebooting).

Documentation Updates

This section describes corrections and additions to the Cisco SN 5428 Storage Router Release 3.3 documentation set since initial publication.

Added keyword to the zone member CLI command

On page 11-529 of the Cisco SN 5428 Storage Router Software Configuration Guide, the all keyword should be added to the zone member command. The all keyword adds all WWPNs known to the storage router to the zone.

The syntax of the modified command is:

zone name member {fcalias alias-name | wwpn {xxxxxxxxxxxxxxxx | all}}

Added optional keyword to the no vlan CLI command

On page 11-521 of the Cisco SN 5428 Storage Route Software Configuration Guide, the force keyword should be added to the no vlan command. VLANs can only be deleted if they are not in use. Use the force keyword to bypass this restriction and delete a VLAN that is currently in use.

The syntax of the modified command is:

no vlan vid [force]

Added switch version to the show version CLI command display

On page 11-474 of the Cisco SN 5428 Storage Router Software Configuration Guide, the example show be updated to include the switch version in the display, as follows:

[SN5428A]# show version
 
CISCO SN 5428 Storage Router
 
         CLI Version: 2.1
       iSCSI Version: 0/2 (Min/Max)
    System Bootstrap: 3.3.1-K9 
    Operating System: 3.3.1-K9 
      Switch Version: V1.4.0.43-0
         Application: 3.3.1-K9
          Web Server: R6_1_0
             OpenSSH: 3.4p1
             OpenSSL: 0.9.6e
                Zlib: 1.1.4
 
Copyright (c) 1986-2002 by Cisco Systems, Inc 

On page 11-475, the following should be added to Table 11-38, after Operating System:

Field: Switch Version

Description: The version of the storage router integrated FC switch component.

Displaying transparent SCSI routing mode

On page 7-2 of the Cisco SN 5428 Storage Router Software Configuration Guide, add the following note to the end of the page:


Note To view the mode—static or dynamic—currently being deployed, use the show scsirouter CLI command.


On page 7-4 of the Cisco SN 5428 Storage Router Software Configuration Guide, update the first table in Example 7-1 with a Mode column. This column shows whether the storage router is currently deployed in static or dynamic mode.

SCSI Router Information
Status Codes: A=active, I=inactive, C=create failed, D=not enabled, S=slave
                                  CDB   Lun
Router               Stat Mode    Retry Reset Description
-------------------- ---- ---- ------- ----- -----------
transparent          A    dynamic 6     no    (not set)

Time change requires system reboot

After a time change via the CLI or the GUI, a system reboot is required to synchronize the system timestamp with the timestamps on the integrated FC switch log files, syslog and devlog.

For example, after issuing the clock set command, the following warning appears:

[techpubs4]# clock set 14:47:05 04 28 2003
WARNING: After a time change a reboot is required to
         synchronize syslog and devlog timestamps

Related Documentation

The following sections describe the related documentation available for Cisco SN 5428 Storage Router release 3.3.2. These documents consist of hardware installation and software configuration guides, and platform-specific release notes and readme files for the Cisco iSCSI drivers.

Release-Specific Documents

This release notes document is the only document specific to SN 5428 release 3.3.2. It is only available as an electronic document on Cisco.com and the Documentation CD-ROM.

Platform-Specific Documents

Platform-specific documents consist of the release notes and readme files for Cisco iSCSI drivers, version 2.1.x or later. The files are currently available in electronic format only. See the "Obtaining Updated Software and iSCSI Drivers" section for details.

Hardware Documents

Refer to the Cisco SN 5428 Storage Router Hardware Installation Guide for hardware installation procedures. This document is available as a printed manual. It is also available as an electronic document on Cisco.com and the Documentation CD-ROM.

Software Documents

Refer to the Cisco SN 5428 Storage Router Software Configuration Guide Release 3.3, for configuration information and procedures. This document is available as a printed manual. It is also available as an electronic document on Cisco.com and the Documentation CD-ROM.

For documentation on the SN 5428 web-based GUI, refer to the SN 5428 Storage Router web-based GUI online Help system.

Service and Support

For service and support for a product purchased from a reseller, contact the reseller, who offers a wide variety of Cisco service and support programs described in "Service and Support" of Cisco Information Packet shipped with your product.


Note If you purchased your product from a reseller, you can access Cisco.com as a guest. Cisco.com is Cisco Systems' primary real-time support channel. Your reseller offers programs that include direct access to Cisco.com services.


For service and support for a product purchased directly from Cisco, use Cisco.com.

Software Configuration Tips on the Cisco TAC Home Page

A variety of Cisco SN 5428 Storage Router software installation, configuration and usage tips are available on the Cisco Technical Assistance Center (TAC) Web Site.

You can access "tech tips" by following these instructions:


Step 1 At http://www.cisco.com, log in to Cisco.com. Click Technical Support, and select Hardware Support from the menu.

Step 2 At the Hardware Support web page, click Storage Networking Devices from the Hardware Support menu on the left side of the page.

Step 3 At the Storage Networking Devices web page, click the appropriate link for your system. For example, click the SN 5428 Storage Routers link.

Step 4 Click the Troubleshooting link, and then click the appropriate links for information about installing, configuring, and troubleshooting SN 5400 Series system software and iSCSI drivers.


Obtaining Documentation

Cisco provides several ways to obtain documentation, technical assistance, and other technical resources. These sections explain how to obtain technical information from Cisco Systems.

Cisco.com

You can access the most current Cisco documentation on the World Wide Web at this URL:

http://www.cisco.com/univercd/home/home.htm

You can access the Cisco website at this URL:

http://www.cisco.com

International Cisco websites can be accessed from this URL:

http://www.cisco.com/public/countries_languages.shtml

Documentation CD-ROM

Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which may have shipped with your product. The Documentation CD-ROM is updated regularly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual or quarterly subscription.

Registered Cisco.com users can order a single Documentation CD-ROM (product number DOC-CONDOCCD=) through the Cisco Ordering tool:

http://www.cisco.com/en/US/partner/ordering/ordering_place_order_ordering_tool_launch.html

All users can order monthly or quarterly subscriptions through the online Subscription Store:

http://www.cisco.com/go/subscription

Ordering Documentation

You can find instructions for ordering documentation at this URL:

http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm

You can order Cisco documentation in these ways:

Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from the Networking Products MarketPlace:

http://www.cisco.com/en/US/partner/ordering/index.shtml

Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters (California, U.S.A.) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).

Documentation Feedback

You can submit comments electronically on Cisco.com. On the Cisco Documentation home page, click Feedback at the top of the page.

You can e-mail your comments to bug-doc@cisco.com.

You can submit comments by using the response card (if present) behind the front cover of your document or by writing to the following address:

Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883

We appreciate your comments.

Obtaining Technical Assistance

Cisco provides Cisco.com, which includes the Cisco Technical Assistance Center (TAC) website, as a starting point for all technical assistance. Customers and partners can obtain online documentation, troubleshooting tips, and sample configurations from the Cisco TAC website. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC website, including TAC tools and utilities.

Cisco.com

Cisco.com offers a suite of interactive, networked services that let you access Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.

Cisco.com provides a broad range of features and services to help you with these tasks:

Streamline business processes and improve productivity

Resolve technical issues with online support

Download and test software packages

Order Cisco learning materials and merchandise

Register for online skill assessment, training, and certification programs

To obtain customized information and service, you can self-register on Cisco.com at this URL:

http://tools.cisco.com/RPF/register/register.do

Technical Assistance Center

The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available: the Cisco TAC website and the Cisco TAC Escalation Center. The type of support that you choose depends on the priority of the problem and the conditions stated in service contracts, when applicable.

We categorize Cisco TAC inquiries according to urgency:

Priority level 4 (P4)—You need information or assistance concerning Cisco product capabilities, product installation, or basic product configuration. There is little or no impact to your business operations.

Priority level 3 (P3)—Operational performance of the network is impaired, but most business operations remain functional. You and Cisco are willing to commit resources during normal business hours to restore service to satisfactory levels.

Priority level 2 (P2)—Operation of an existing network is severely degraded, or significant aspects of your business operations are negatively impacted by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.

Priority level 1 (P1)—An existing network is "down," or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.

Cisco TAC Website

The Cisco TAC website provides online documents and tools to help troubleshoot and resolve technical issues with Cisco products and technologies. To access the Cisco TAC website, go to this URL:

http://www.cisco.com/tac

All customers, partners, and resellers who have a valid Cisco service contract have complete access to the technical support resources on the Cisco TAC website. Some services on the Cisco TAC website require a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to this URL to register:

http://tools.cisco.com/RPF/register/register.do

If you are a Cisco.com registered user, and you cannot resolve your technical issues by using the Cisco TAC website, you can open a case online at this URL:

http://www.cisco.com/tac/caseopen

If you have Internet access, we recommend that you open P3 and P4 cases online so that you can fully describe the situation and attach any necessary files.

Cisco TAC Escalation Center

The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 issues. These classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer automatically opens a case.

To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to this URL:

http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml

Before calling, please check with your network operations center to determine the Cisco support services to which your company is entitled: for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). When you call the center, please have available your service agreement number and your product serial number.

Obtaining Additional Publications and Information

Information about Cisco products, technologies, and network solutions is available from various online and printed sources.

The Cisco Product Catalog describes the networking products offered by Cisco Systems, as well as ordering and customer support services. Access the Cisco Product Catalog at this URL:

http://www.cisco.com/en/US/products/products_catalog_links_launch.html

Cisco Press publishes a wide range of networking publications. Cisco suggests these titles for new and experienced users: Internetworking Terms and Acronyms Dictionary, Internetworking Technology Handbook, Internetworking Troubleshooting Guide, and the Internetworking Design Guide. For current Cisco Press titles and other information, go to Cisco Press online at this URL:

http://www.ciscopress.com

Packet magazine is the Cisco quarterly publication that provides the latest networking trends, technology breakthroughs, and Cisco products and solutions to help industry professionals get the most from their networking investment. Included are networking deployment and troubleshooting tips, configuration examples, customer case studies, tutorials and training, certification information, and links to numerous in-depth online resources. You can access Packet magazine at this URL:

http://www.cisco.com/go/packet

iQ Magazine is the Cisco bimonthly publication that delivers the latest information about Internet business strategies for executives. You can access iQ Magazine at this URL:

http://www.cisco.com/go/iqmagazine

Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal at this URL:

http://www.cisco.com/en/US/about/ac123/ac147/about_cisco_the_internet_protocol_journal.html

Training—Cisco offers world-class networking training. Current offerings in network training are listed at this URL:

http://www.cisco.com/en/US/learning/le31/learning_recommended_training_list.html