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Release Notes for Cisco SN 5428 Storage Router Release 3.4.1

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Release Notes for Cisco SN 5428 Storage Router, Release 3.4.1

Table Of Contents

Release Notes for Cisco SN 5428 Storage Router, Release 3.4.1

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

New and Changed Information

New Features

New CLI Commands

Modified CLI Commands

Limitations and Restrictions on SN 5428 Storage Router Clusters

Caveats

Open Caveats

SCSI

Resolved Caveats

FC-Driver

FC-Switch

GUI

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 TAC Website

Opening a TAC Case

TAC Case Priority Definitions

Obtaining Additional Publications and Information


Release Notes for Cisco SN 5428 Storage Router, Release 3.4.1


September 26, 2003

These release notes support Cisco SN 5428 Storage Router software release 3.4.1.

For a list of software caveats that apply to Release 3.4.1, 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

New and Changed Information

Limitations and Restrictions on SN 5428 Storage Router Clusters

Caveats

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 (SSL) 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 to initiators or servers that use SLP

Internet Storage Name Service (iSNS) support—provides the ability to register iSCSI targets with an iSNS server, allowing iSCSI initiators to dynamically discover available storage targets

LUN Trespass feature—provides a LUN failover feature for selected storage arrays that operate on the active/passive port model. When enabled, the trespass feature provides a redundant path from the storage router to the storage array by allowing the storage router to detect a path failure to a storage array port and perform the necessary operations to fail LUNs over to the other port on the storage array without using any multi-path software.

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

System Requirements

This section describes the system requirements for release 3.4.1 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 (SCSI routing only), 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. The browser must be enabled to support JavaScript and style sheets.

Browser
Platform

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

Note To use the HTTP Put File function to update software, you must use Microsoft Internet Explorer version 6.0 or later

Microsoft Windows NT 4.0, Microsoft Windows 2000

Netscape Navigator version 4.76

Linux

Netscape Navigator version 4.7

Sun Solaris



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 3.4.1 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.

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

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.


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

[SN5428A01]$ show version
Cisco SN 5428-K9 Storage Router
 
         CLI Version: 2.1
       iSCSI Version: 0/2 (Min/Max)
    System Bootstrap: 3.4.1-K9
    Operating System: 3.4.1-K9
      Switch Version: V1.5.1.10-0
         Application: 3.4.1-K9
          Web Server: R6_1_0
             OpenSSH: 3.4p1
             OpenSSL: 0.9.6e
                Zlib: 1.1.4
 
Copyright (c) 1986-2003 by Cisco Systems, Inc

Upgrading to a New Software Release


Note To upgrade to SN 5428 software release 3.4.1, 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 3.4.

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 3.4.1 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 3.4.

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.3.4.

Uninstalling an Upgrade


Note Software versions prior to 3.3.1 do not support the static mode for transparent SCSI routing.


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 3.4.

Step 3 

software version 3.3.2

Select the software to be booted when the system next starts — for example, boot version 3.3.2 — 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 3.4.1

(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.


New and Changed Information

This section describes new and changed features in Release 3.4.1, and includes the following information:

New Features

New CLI Commands

Modified CLI Commands

New Features

Internet Storage Name Service (iSNS) support—provides the ability to register iSCSI targets with an iSNS server, allowing iSCSI initiators to dynamically discover available storage targets

LUN Trespass feature—provides a LUN failover feature for selected storage arrays that operate on the active/passive port model. When enabled, the trespass feature provides a redundant path from the storage router to the storage array by allowing the storage router to detect a path failure to a storage array port and perform the necessary operations to fail LUNs over to the other port on the storage array without using any multi-path software.

Enhanced control of static WWPN bindings—allows you to disable auto-learning of static WWPN bindings and to manually populate the binding table when the storage router is deployed for static transparent SCSI routing. When the auto-learn feature is displayed, the IP host must have a specific IP host to FC address mapping configured in the iSCSI static binding table.

Web-based Graphical User Interface extended to storage routers deployed for transparent SCSI routing—allows you to configure and monitor a storage router via the web-base GUI regardless of deployment option

New CLI Commands

debug isns: Enables tracing of iSNS Protocol Data Units (PDUs) for troubleshooting purposes.

isns enable: Enables communications and client registrations with an iSNS server.

isns refresh: Forces the storage router to reregister all device registrations with the iSNS server.

scsirouter target trespass: Enables the active/passive controller trespass feature for the specified storage target.

show debug isns: Displays iSNS PDU trace contents and statistics.

show isns: Displays iSNS configuration information, objects, or operational statistics.

static iscsibinding interface autolearn: Enables or disables auto-learning of static WWPN bindings. This command is only available when the storage router is deployed for static transparent SCSI routing.

static iscsibinding interface index: Enables you to manually populate the iSCSI static binding table for the specified interface. This command is only available when the storage router is deployed for static transparent SCSI routing.

Modified CLI Commands

scsirouter target enable: The force keyword was added.

show debug scsirouter: The short keyword was added.

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.

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 3.4.1.

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 3.4.1.

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 3.4.1.

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. This is a permanent workaround; full problem resolution requires ASIC modification.

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 screen 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.

CSCeb63352

LUNs or ports on a Compaq 4100 storage array connected to a storage router are not visible. The CLI command show devices will show no ports or LUNs. This problem occurs even if the storage router port type is TL-port.

Workaround: None. This problem is resolved in release 3.4.1.

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. This is a permanent workaround, as the bug will not be resolved in any previous version of Internet Explorer.

Related Documentation

The following sections describe the related documentation available for Cisco SN 5428 Storage Router release 3.4.1. 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 3.4.1. 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 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 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 3.4, for configuration information and procedures. This document is available as an electronic document on Cisco.com and the Documentation CD-ROM.

Refer to the Cisco SN 5400 Series Storage Router Command Reference, Release 3.4, for information about the CLI command interface. This document is 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 annual 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, USA.) 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 send your comments in e-mail 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

For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, the Cisco Technical Assistance Center (TAC) provides 24-hour, award-winning technical support services, online and over the phone. Cisco.com features the Cisco TAC website as an online starting point for technical assistance.

Cisco TAC Website

The Cisco TAC website (http://www.cisco.com/tac) provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The Cisco TAC website is available 24 hours a day, 365 days a year.

Accessing all the tools on the Cisco TAC website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a login ID or password, register at this URL:

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

Opening a TAC Case

The online TAC Case Open Tool (http://www.cisco.com/tac/caseopen) is the fastest way to open P3 and P4 cases. (Your network is minimally impaired or you require product information). After you describe your situation, the TAC Case Open Tool automatically recommends resources for an immediate solution. If your issue is not resolved using these recommendations, your case will be assigned to a Cisco TAC engineer.

For P1 or P2 cases (your production network is down or severely degraded) or if you do not have Internet access, contact Cisco TAC by telephone. Cisco TAC engineers are assigned immediately to P1 and P2 cases to help keep your business operations running smoothly.

To open a case by telephone, use one of the following numbers:

Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553-2447

For a complete listing of Cisco TAC contacts, go to this URL:

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

TAC Case Priority Definitions

To ensure that all cases are reported in a standard format, Cisco has established case priority definitions.

Priority 1 (P1)—Your 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.

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

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

Priority 4 (P4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.

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/index.html