Table Of Contents
Release Notes for Cisco Network Boot Release 3.3.1
June 1, 2005
Note You can find the most current documentation on Cisco.com.
These release notes support Cisco Network Boot software release 3.3.1.
For a list of software caveats that apply to Release 3.3.1, see the "Caveats" section. The caveats are updated for every maintenance release and are located on Cisco.com and the Documentation CD-ROM.
These release notes describe the following topics:
Cisco Network Boot is a product that allows you to boot a computer without an attached disk drive. Cisco Network Boot supports a boot of the following operating systems:
•Microsoft Windows 2000
•Microsoft Windows XP
•Microsoft Windows Server 2003
•Various Linux operating systems, via the Replication Utility for Linux and the iSCSI driver for Linux, available as Open Source from SourceForge. See the readme files that accompany the software downloads for detailed configuration and usage information.
With Cisco Network Boot, a computer without a directly attached disk drive uses iSCSI protocol via an iSCSI driver to boot from an iSCSI disk through an IP network and a Cisco SN 5400 or MDS 9000 Series system (see Figure 1). As with any iSCSI disk, even though it is not directly attached to the computer accessing it, the disk appears to the computer as if it were directly attached.
Note The iSCSI protocol is an IETF-defined protocol for IP storage (ips). For more information about the iSCSI protocol, refer to the IETF standards for IP storage at http://www.ietf.org.
Figure 1 Cisco Network Boot Using Cisco SN 5400 Series System
Table 1 describes the system requirements for hosts, the DHCP and TFTP servers, and the iSCSI targets that utilize Cisco Network Boot.
Table 1 Cisco Network Boot System Requirements
Master boot host
•IBM PC-compatible computer with an Intel Pentium III or higher processor, with BIOS support for PXE 2.1 or later.
•A network interface and NIC supported by PXE.
•A directly attached disk drive configured with a supported operating system and the appropriate iSCSI driver.
Cisco Network Boot supports the following Microsoft Windows operating systems, with the Cisco iSCSI driver version 3.1.2 (or later) for Microsoft Windows:
–Microsoft Windows 2000 (Professional, Advanced or Datacenter Server) with Service Pack 3 (or higher)
–Microsoft Windows XP (Professional Edition) with Service Pack 2 (or higher)
–Microsoft Windows Server 2003 (Enterprise, Standard or Web Edition) with Service Pack 1 (or higher)
Note If you are using the dynamic IP address boot feature of Cisco Network Boot, you must use the Cisco iSCSI driver version 4.2.1 (or later) for Microsoft Windows.
Note Cisco Network Boot also supports a boot of various Linux operating systems, with the Linux iSCSI driver version 3.4.1 (or later) and the Replication Utility for Linux. The iSCSI driver and the Replication Utility are both Open Source, and are available from SourceForge. See the readme files that accompany the software downloads for detailed requirements, configuration and usage information.
•IBM PC-compatible computer with an Intel Pentium III or higher processor, with BIOS support for PXE 2.1 or later.
•A network interface supported by PXE.
Note The hardware must be identical to the master boot host hardware, including identical network hardware and connections.
DHCP and TFTP servers
•A DHCP server configured with reserved IP addresses for each host.
•A TFTP server to transfer the iNBP.com file to the host.
Note One server may provide both functions.
•iSCSI targets configured on one or more of the following systems:
–SN 5428 Storage Router, running software release 3.2 or later
–SN 5428-2 Storage Router
–MDS 9000 Series system, running SAN-OS Release 1.1(1) or later
•A suitable storage device (JBOD or storage array) with sufficient space to hold the boot image. The iSCSI target block size must be 512 bytes.
Note Storage arrays are recommended because they provide redundancy and are more flexible than JBODs.
•Cisco SN 5400 or MDS 9000 Series system.
•Ethernet switch or hub (optional).
•Fibre Channel switch or hub (optional).
Note Refer to the Cisco.com website for interoperability information.
New and Changed Information
Cisco Network Boot release 3.3.1 includes the following new and changed features:
•Support for static or dynamic IP addresses—Allows any NIC that is PXE enabled to be configured with either a static or dynamic IP address.
•CDP support—Cisco Discovery Protocol (CDP) is automatically supported by Cisco Network Boot.
•Open Source Linux Replication Utility—The Linux Replication Utility has been enhanced and is now available as Open Source from SourceForge.
•Enhanced iSCSI target support—Cisco Network Boot now supports shortened iSCSI target names.
•Boot from non-0 LUN—Allows a Microsoft Windows system to boot from a LUN that is not LUN 0.
•Command Line Utility—A CLI is now available that can be used manually or in command scripts to automate the replication process.
See the readme file for additional information about all new features.
This section describes how to obtain updated Network Boot software, and includes the following information:
iSCSI Driver Version Support
Cisco Network Boot requires the Cisco iSCSI Driver version 3.1.2 (or later) for Microsoft Windows. If you are using the dynamic IP address boot feature of Cisco Network Boot, you must use the Cisco iSCSI driver version 4.2.1 (or later) for Microsoft Windows.
Obtaining Updated Software and iSCSI Drivers
Registered Cisco.com users can download the most current Cisco Network Boot 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 & Documentation and Downloads.
Step 2 At the Downloads web page, under Software Products & Downloads, click Storage Networking Software.
Step 3 At the Storage Networking Software web page, click Cisco Network Boot or Cisco iSCSI Drivers.
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 See the readme file that accompanies the software (in the downloaded archive file), related documentation, and the appropriate release notes for installation information.
Installing, Upgrading and Uninstalling Cisco Network Boot
Refer to the Cisco Network Boot Installation and Configuration Guide Release 3.3, for complete installation and configuration information and procedures. This document is available as an electronic document on Cisco.com and the Documentation DVD.
For complete procedures to upgrade or uninstall Cisco Network Boot, refer to the readme file that accompanies the software (in the downloaded archive file).
Limitations and Restrictions
•The storage device block size must be 512 bytes.
•If the host runs a Microsoft Windows operating system, all required host hardware should be identical; network interface and connections must be identical.
Caveats describe unexpected behavior or defects in Cisco Network Boot software. 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 Cisco Network Boot release 3.3.1.
•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.
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:
There are no open severity 1 or 2 caveats for Cisco Network Boot release 3.3.1
When running Microsoft Windows 2000 with Service Pack 4, Cisco Network Boot may fail to produce an image that boots successfully.
Workaround: None. This problem is resolved in release 3.3.1
If "Enable SCSI failure on Boot Target" is disabled for a Windows 2000 Advanced Server booted from an iSCSI disk, a relogin attempt from the MMC application may cause the system to freeze and the MMC console to become non-responsive. The connection is not dropped from the SCSI routing instance side.
Workaround: None. This problem is resolved in release 3.3.1.
The following sections describe the related documentation available for Cisco Network Boot Release 3.3.1. These documents consist of an installation and configuration guide, release notes and readme file for Cisco Network Boot, release notes and readme file for the Cisco iSCSI Driver version 3.1.2 (or later) for Microsoft Windows, and the SN 5400 and MDS 9000 Series system hardware and software configuration guides.
The Cisco Network Boot Installation and Configuration Guide is available as an electronic document on Cisco.com and the Documentation DVD. The SN 5400 and MDS 9000 Series system hardware installation and software configuration documentation sets are available as electronic documents, and may be available as printed manuals. The Cisco Network Boot readme file and the iSCSI driver readme files are available in electronic format, as part of the software download package. See the "Obtaining Updated Software and iSCSI Drivers" section for details.
This release notes document is the only document specific to Cisco Network Boot Release 3.3.1. It is only available as an electronic document on Cisco.com and the Documentation DVD.
Each release of SN 5400 and MDS 9000 Series system software, and Cisco iSCSI driver software, includes an associated Release Notes document, which is also available as an electronic document on Cisco.com and the Documentation CD-ROM.
Refer to the appropriate SN 5400 or MDS 9000 Series system hardware installation guide for hardware installation procedures. These documents are available as electronic documents on Cisco.com and the Documentation DVD, and may be available as printed manuals.
Refer to the Cisco Network Boot Installation and Configuration Guide Release 3.3, for installation and configuration information and procedures. This document is available as an electronic document on Cisco.com and the Documentation DVD.
Refer to the appropriate SN 5400 or MDS 9000 Series system software configuration guide for software configuration information.These documents are available as electronic documents on Cisco.com and the Documentation DVD, and may be available as printed manuals.
Service and Support
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For service and support for a product purchased directly from Cisco, use Cisco.com.
Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.
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Obtaining Technical Assistance
For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco Technical Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service contract, contact your reseller.
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Submitting a Service Request
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For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.
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Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.
Severity 1 (S1)—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.
Severity 2 (S2)—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.
Severity 3 (S3)—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.
Severity 4 (S4)—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
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•Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and networking investments. Each quarter, Packet delivers coverage of the latest industry trends, technology breakthroughs, and Cisco products and solutions, as well as network deployment and troubleshooting tips, configuration examples, customer case studies, certification and training information, and links to scores of in-depth online resources. You can access Packet magazine at this URL:
•iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies learn how they can use technology to increase revenue, streamline their business, and expand services. The publication identifies the challenges facing these companies and the technologies to help solve them, using real-world case studies and business strategies to help readers make sound technology investment decisions. You can access iQ Magazine at this URL:
•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:
•World-class networking training is available from Cisco. You can view current offerings at this URL:
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
© 2005 Cisco Systems, Inc. All rights reserved.