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Release Notes for Cisco SN 5428 Storage Router Release 3.2.2

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Release Notes for Cisco SN 5428 Storage Router Release 3.2.2

Table Of Contents

Release Notes for Cisco SN 5428 Storage Router Release 3.2.2

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

CLI

FC-Switch

GUI

SNMP

Software-Mgmt

Resolved Caveats

FC-Switch-Manager

Software-Mgmt

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

World Wide Web

Documentation CD-ROM

Ordering Documentation

Documentation Feedback

Obtaining Additional Publications and Information

Obtaining Technical Assistance

Cisco.com

Technical Assistance Center

Cisco TAC Web Site

Cisco TAC Escalation Center


Release Notes for Cisco SN 5428 Storage Router Release 3.2.2


March 24, 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 3.2.2.

For a list of software caveats that apply to Release 3.2.2, 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

Limitations and Restrictions on SN 5428 Storage Router Clusters

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

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 3.2.2 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.

iSCSI Driver Version Support

A Cisco SN 5428 Storage Router running software release 3.2.2 or later is compatible with an IP host running any Cisco iSCSI Driver version 2.1.1 or later; it is not compatible with an IP host running any Cisco iSCSI Driver version 1.8.x.

A Cisco SN 5428 Storage Router running software release 3.2.2 or later is also compatible 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 Instructions and Guides 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, release notes and example configuration files 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: 2/2 (Min/Max)
    System Bootstrap: 3.2.2-K9
    Operating System: 3.2.2-K9
         Application: 3.2.2-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 3.2.2, your storage router must currently be running software version 3.2.1 or 2.5.1.


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 3.2.

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.)


Uninstalling an Upgrade

To return to a previous SN 5428 software release (2.5.1) 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 3.2.

Step 3 

software version 2.5.1

Select the software to be booted when the system next starts; for example, boot version 2.5.1 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 3.2.2

(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 SN 5428 software releases. 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.

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 3.2.2.

CLI

CSCdy05687

Event messages may appear during the initial configuration script for setting up a new SN 5428 storage router, 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).

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 screen or the CLI show interface command to display fibre channel interface information.

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.

SNMP

CSCdw74606

If an SNMP set request is issued with multiple variable bindings, and there is an error with one of the bindings (for example, trying to set a read-only object), the set request to the other bindings are allowed to complete. The SNMP V1 and V2 specs specify that if any of the set operations to the bindings in a SNMP set request fail, none of them should be done.

Workaround: Only issue an SNMP set request with a single variable binding.

Software-Mgmt

CSCdy66379

The SN 5428 Storage Router may fail to boot successfully because the integrated Fibre Channel switch component does not retain the default IP address. This problem can only occur in two situations. The user will only encounter one of these situations.

The first situation occurs during diagnostics, when test 18 fails with the following message:

Starting ->  18 - FC switch startup Test...Waiting for switch to reboot
Failed!
curTest = 00018, error code = 06000000
Test Number = HL 18
Execution Count = 1
Voltage Margin = Nominal
Date/Time of failure: TUE SEP 17 19:12:09 2002
Error code = 0600-0000
Severity = Fatal
Failed FC Switch logic ping command
FRU Replacement List = FC Switch Logic, CISCO SN5428, END.
Failure address = 00000000
Expected -> 00  00 <- Received

The second situation occurs during initialization, when the Fibre Channel switch application attempts to ping the integrated switch components and diagnostics are disabled. In this situation, the following message displays:

"Switch ping check failed"

In either of these situations, the user will be brought to the vxWorks console prompt.

Workaround: Contact Cisco TAC for more information on this defect.

Resolved Caveats

The caveats listed in this section are resolved in SN 5428 software release 3.2.2.

FC-Switch-Manager

CSCea46485

Unable to Telnet to the SN 5428 to use the CLI. Also unable to use the GUI interface. Clearing the local zones using either the GUI or the clear fcswitch zones local CLI command will cause this problem.

Workaround: Do not clear the local zones from either the CLI or the GUI.

Software-Mgmt

CSCea42081

During a software upgrade from sn5428-sw-2.5.1-K9.tar to sn5428-sw-3.2.1-K9.tar, the SN 5428 may crash during the HTTP PUT operation.

Workaround: If this occurs, attempt the upgrade again, as subsequent attempts worked without any problem.

Documentation Updates

This section describes corrections to the Cisco SN 5428 Storage Router Release 3.2 documentation set since initial publication.

Enhanced input voltage specifications

In the Cisco SN 5428 Storage Router Hardware Installation Guide, the input voltage descriptions should be updated as follows:

The SN 5428 Storage Router has an internal power supply that monitors its temperature and output voltages. The power supply automatically senses the source and will adjust to an input voltage range between 90 VAC - 264 VAC 50/60 Hz.

Changed maximum number of Telnet and SSH sessions

On page 11-442 of the Cisco SN 5428 Storage Router Software Configuration Guide, the "Usage Guidelines" section should be updated to read as follows:

There are a maximum of four concurrent CLI management sessions per storage router.

Related Documentation

The following sections describe the related documentation available for Cisco SN 5428 Storage Router Release 3.2.2. These documents consist of hardware installation and software configuration guides, and platform-specific release notes, readme and example configuration files for the Cisco iSCSI drivers.

Release-Specific Documents

This release notes document is the only document specific to SN 5428 Release 3.2.2. 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, readme and example configuration files for Cisco iSCSI drivers, version 2.1.x, 2.2.x, and 3.1.x. 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 3.2, 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

These sections explain how to obtain documentation from Cisco Systems.

World Wide Web

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

http://www.cisco.com

Translated documentation is available at 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 is shipped with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual subscription.

Ordering Documentation

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/cgi-bin/order/order_root.pl

Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store:

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

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. In the Cisco Documentation home page, click the Fax or Email option in the "Leave Feedback" section at the bottom of the page.

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

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

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

We appreciate your comments.

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 monthly periodical that provides industry professionals with the latest information about the field of networking. You can access Packet magazine at this URL:

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

iQ Magazine is the Cisco monthly periodical that provides business leaders and decision makers with the latest information about the networking industry. 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 the design, development, and operation of 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, with current offerings in network training listed at this URL:

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

Obtaining Technical Assistance

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

Cisco.com

Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.

Cisco.com is a highly integrated Internet application and a powerful, easy-to-use tool that 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

If you want to obtain customized information and service, you can self-register on Cisco.com. To access Cisco.com, go to this URL:

http://www.cisco.com

Technical Assistance Center

The Cisco Technical Assistance Center (TAC) is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two levels of support are available: the Cisco TAC Web Site and the Cisco TAC Escalation Center.

Cisco TAC inquiries are categorized according to the urgency of the issue:

Priority level 4 (P4)—You need information or assistance concerning Cisco product capabilities, product installation, or basic product configuration.

Priority level 3 (P3)—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.

Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects of business operations. No workaround is available.

Priority level 1 (P1)—Your production network is down, and a critical impact to business operations will occur if service is not restored quickly. No workaround is available.

The Cisco TAC resource that you choose is based on the priority of the problem and the conditions of service contracts, when applicable.

Cisco TAC Web Site

You can use the Cisco TAC Web Site to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, 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 Web Site. The Cisco TAC Web Site requires 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://www.cisco.com/register/

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

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

If you have Internet access, we recommend that you open P3 and P4 cases through the Cisco TAC Web Site.

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 level of 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.