Table Of Contents
Release Notes for Cisco SN 5420 Storage Router Release 1.1.3
Determining the SN 5420 Software Version
Upgrading to a New Software Release
Limitations and Restrictions on SN 5420 Storage Router Clusters
Obtaining Technical Assistance
Contacting TAC by Using the Cisco TAC Website
Release Notes for Cisco SN 5420 Storage Router Release 1.1.3
May 9, 2001
Text Part Number 78-12294-01
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 5420 Storage Router for Release 1.1.3.
For a list of software caveats that apply to Release 1.1.3, see the "Open 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
The SN 5420 Storage Router provides servers with IP access to storage through SCSI routing using iSCSI protocol. The iSCSI protocol is a protocol for encapsulating SCSI requests and responses over IP. With SCSI routing, servers use an IP network to access storage as if the servers were directly attached to the storage devices. (See Figure 1.)
Figure 1 SN 5420 Storage Router Overview
Note
System Requirements
This section describes the system requirements for Release 1.1.3 and includes the following information:
•
•
iSCSI Drivers
To access the SN 5420 Storage Router, servers must have a Cisco Storage Networking iSCSI driver installed and configured. The following iSCSI drivers are currently available:
•
•
•
Obtaining iSCSI Drivers
To obtain the Cisco Storage Networking iSCSI drivers, accompanying readme files, and example configuration files, log in to Cisco.com and access the following URL:
http://www.cisco.com/pcgi-bin/tablebuild.pl/sn5420
In addition, you can check this website for information about the availability of new drivers, updated drivers, driver compatibility, and other relevant information.
Note
External Devices
Flow control should be turned on at the Gigabit Ethernet port that the SN 5420 Storage Router is plugged in to.
External Hosts
•
•
Graphical User Interface
•
•
These browser restrictions apply only to the online Help system. There are no browser limitations or requirements associated with the SN 5420 web-based GUI.
Determining the SN 5420 Software Version
To determine the version of SN 5420 software running on your Cisco SN 5420 Storage Router, establish a Telnet or console port session with the storage router, and change to Administrator mode. Then enter the CLI show software command. (See Example 1.)
Example 1 Determining the Software Version
[SN5420-A01]# show softwareVersion Boot Hash Sign Crash Size Date1.1.2 OK OK N/A 0 6.85 MB Mar 7 16:28 CST 20011.1.3 OK OK N/A 0 6.85 MB Mar 12 17:52 CST 2001Disk Space Free: 8.50 MbytesDownload URL: http://10.1.11.32/~software/sn5420Download User: SWAdmin01Running Version: 1.1.3Will boot Version: 1.1.3The last entries in the table of information displayed in response to the command show the running version (Running Version) and the version that the storage router will run at the next reboot (Will boot Version).
You can also check the version of the SN 5420 software by using the SN 5420 web-based GUI. At the web-based GUI Monitor page, click Processor and SW under the System menu. Clicking Processor and SW causes the Processor and Software Information table to be displayed. The Software Version field contains the current software version information.
Upgrading to a New Software Release
For information about upgrading to new SN 5420 software using the CLI, see the section "Installing Updated Software" in Chapter 6, "Maintaining and Managing the SN 5420" of the SN 5420 Storage Router Software Configuration Guide.
To upgrade to new SN 5420 software using the SN 5420 web-based GUI, follow these instructions:
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
For information about upgrading to new iSCSI driver software, see the readme file for the appropriate iSCSI driver.
New and Changed Information
Release 1.1.3 is the initial release; there is no new or changed information.
Limitations and Restrictions on SN 5420 Storage Router Clusters
For this release, there are restrictions on SN 5420 Storage Router clusters as follows:
•
•
•
Open Caveats
This section describes possibly unexpected behavior by SN 5420 Release 1.1.3. All the caveats listed in this section are open in SN 5420 Release 1.1.3, and describe severity 1 and 2 caveats, and selected caveats of other severity levels. For a more complete list of caveats against this release, access Cisco.com as described in the section "Cisco.com" at the end of this document.
Note
Command Line Interface
•
In some situations, the SN 5420 Fibre Channel port loop initialization may fail to complete, causing failure to discover devices on the Fibre Channel port. Consequently, the show devices command will not display any targets. This problem may occur when multiple devices are connected to a hub with the intention of running in an arbitrated loop topology and the SN 5420 Fibre Channel interface is configured for ptppref (point-to-point preferred), which is the default configuration. This behavior has been observed with an EMC CLARiiON disk array attached to a hub, however, there may be other devices that result in the same problem.
Workaround: To work around this problem configure the Fibre Channel interface according to the the Fibre Channel topology. Although the SN 5420 Storage Router Software Configuration Guide describes this procedure in Chapter 4 (in the section, "Configuring a Device Interface") the setup wizard does not provide the option of setting the topology. If you choose to use the setup wizard for configuration, you must first configure the Fibre Channel port topology according to the procedure described in "Configuring a Device Interface" in Chapter 4 of the SN 5420 Storage Router Software Configuration Guide.
•
In some situations, the user does not receive a prompt to reboot the storage router after performing initial configuration of the storage router management interface IP address. Instead of the expected "Press ENTER to reboot" message, the normal command prompt returns on the console. This is a timing issue that only occurs if the user enters the set mgmt ipaddress command within a few seconds after the storage router reboots.
Workaround: Reboot the storage router. As indicated in Chapter 2 (in the section "Entering the Management Interface IP Address") and Chapter 7 (in the section "set mgmt ipaddress") of the SN 5420 Storage Router Software Configuration Guide, you must reboot the storage router after setting the management IP address, before continuing with the storage router configuration. An immediate reboot is required, even if a reboot prompt is not automatically received.
High Availability
•
After a stand-alone Cisco SN 5420 Storage Router is rebooted, HA communication does not start and the SCSI routing service instances are inactive, which means that no data will pass through the device. It is possible to create a new SCSI routing service instance, but the commands necessary to complete or save the instance configuration return error messages. This can occur if neither the MGMT nor HA ports are cabled. If both the MGMT and HA ports are unavailable when the storage router boots, HA communication cannot start. Since all SCSI routing services are started by HA communication, they are disabled until HA starts.
The following displays will diagnose this situation:
–
–
[SN5420-A01]# show haNode ID Status fei0/MGMT fei1/HA3d0703a0 down down down–
[SN5420_A01]# show cluster Cluster Name: 3d0703a0HA State: NOT RUNNINGCluster Changes: 2Last Change: Mon Apr 23 12:34:28 CDT 2001Sent 0 heartbeatsRcvd 0 heartbeats–
[SN5420_A01]# show interface briefInterface Stat IP/Netmask MAC Optionsfei0/MGMT down 10.1.10.111/ffffff00 00017440efd0 type Ethernetmtu 1500 speed 100000000UP BRDCST RUNNING MLTCSTfei1/HA down 10.1.20.56/ffffff00 00016440efc1 type Ethernetmtu 1500 speed 100000000UP BRDCST RUNNING MLTCSTWorkaround: The HA and management interfaces will come up immediately if the link is up. Cable either one of the ports to any hub or switch, or cable them to each other with an Ethernet loopback cable. HA should start immediately. If any SCSI routing services are defined, an event message similar to the following will be displayed:
Apr 24 00:38:27:ScsiRouter::haStart:AS_NOTICE :myscsi has been startedOnce HA communication has been initialized, the MGMT and HA cables can be disconnected with no ill effect. However, at least one port must be cabled whenever the storage router is rebooted.
iSCSI Drivers
•
This problem occurs when a Microsoft Windows NT server is attached to LSI RAID via a Cisco SN 5420 Storage Router, and the server has both the iSCSI and RDAC drivers installed. RDAC is LSI's dual path failover driver. When the server is running both drivers, the NT Disk Administrator will see redundant paths to each LSI RAID disk when the Windows NT server is rebooted.
Workaround: Use LSI's "hot_add" utility to save boot information, instead of using the iSCSI driver's "save boot info" button. Perform the following steps:
Step 1
Step 2
Step 3
Step 4
Step 5
SCSI Routing Services
•
A SCSI routing service instance must be created (and thus started) on the stand-alone Cisco SN 5420 Storage Router or a storage router within a cluster before an access list can be created. When the user appropriately attempts to create or restore an access list on a stand-alone storage router (or the first storage router in the cluster), the following message appears:
Error: accesslist cannot currently be managed on this SN5420This occurs if there are no SCSI routing service instances defined or started anywhere in the cluster. The following displays will diagnose this situation:
–
–
Workaround: Create a new SCSI routing service instance or start a restored one, and then create or restore the access list. If the restored SCSI routing service instance references an access list, it will be necessary to stop and restart the instance after the access list has been defined or restored. When a SCSI routing service instance is started and cannot find its access list, it defaults to a no-access state.
Documentation Updates
This section describes changes to the Cisco SN 5420 Storage Router documentation set.
•
On pages vii, 1-1 and 1-10 of the Cisco SN 5420 Storage Router Software Configuration Guide, and page 1-1 of the Cisco SN 5420 Storage Router Hardware Installation Guide, there are references to a Cisco Storage Networking iSCSI Drivers CD. The iSCSI drivers, readme and example configuration files referenced there are currently available only through the Cisco.com website. The Cisco SN 5420 Storage Router does not currently ship with a Cisco Storage Networking iSCSI Drivers CD.
See the "iSCSI Drivers" section for details on obtaining iSCSI drivers.
•
On page B-2 of the Cisco SN 5420 Storage Router Hardware Installation Guide, Table, B-2, "Fibre Channel Port Cabling Specifications," the values in the Maximum Cable Distance column should be changed as follows:
–
–
Related Documentation
The following sections describe the related documentation available for Cisco SN 5420 Storage Router Release 1.1.3. These documents consist of hardware installation and software configuration guides, and platform-specific readme and example configuration files for the Cisco Storage Networking iSCSI drivers.
The hardware installation and software configuration documentation sets are available as printed manuals or electronic documents.
Platform-Specific Documents
Platform-specific documents consist of the readme and example configuration files for Cisco Storage Networking iSCSI drivers. The files are currently available in electronic format only. To obtain the readme and example configuration files, log in to Cisco.com and access the following URL:
http://www.cisco.com/pcgi-bin/tablebuild.pl/sn5420
Note
Hardware Documents
Refer to the Cisco SN 5420 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 the Documentation CD-ROM and Cisco.com.
Software Documents
Refer to the Cisco SN 5420 Storage Router Software Configuration Guide for configuration information and procedures. This document is available as a printed manual. It is also available as an electronic document on the Documentation CD-ROM and Cisco.com.
For documentation on the SN 5420 web-based GUI, refer to the SN 5420 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
For service and support for a product purchased directly from Cisco, use Cisco.com.
Obtaining Documentation
The following sections provide sources for obtaining documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following sites:
•
•
•
Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM package, which ships 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 as an annual subscription.
Ordering Documentation
Cisco documentation is available in the following ways:
•
http://www.cisco.com/public/ordsum.html
•
http://www.cisco.com/go/subscription
•
Documentation Feedback
If you are reading Cisco product documentation on the World Wide Web, you can submit technical comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco.
You can e-mail your comments to bug-doc@cisco.com.
To submit your comments by mail, use the response card behind the front cover of your document, or write to the following address:
Attn Document Resource Connection
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools. For Cisco.com registered users, additional troubleshooting tools are available from the TAC website.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information and resources at anytime, from anywhere in the world. This highly integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.
Cisco.com provides a broad range of features and services to help customers and partners streamline business processes and improve productivity. Through Cisco.com, you can find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online technical support, download and test software packages, and order Cisco learning materials and merchandise. Valuable online skill assessment, training, and certification programs are also available.
Customers and partners can self-register on Cisco.com to obtain additional personalized information and services. Registered users can order products, check on the status of an order, access technical support, and view benefits specific to their relationships with Cisco.
To access Cisco.com, go to the following website:
http://www.cisco.com
Technical Assistance Center
The Cisco TAC website is available to all customers who need technical assistance with a Cisco product or technology that is under warranty or covered by a maintenance contract.
Contacting TAC by Using the Cisco TAC Website
If you have a priority level 3 (P3) or priority level 4 (P4) problem, contact TAC by going to the TAC website:
http://www.cisco.com/tac
P3 and P4 level problems are defined as follows:
•
•
In each of the above cases, use the Cisco TAC website to quickly find answers to your questions.
To register for Cisco.com, go to the following website:
http://www.cisco.com/register/
If you cannot resolve your technical issue by using the TAC online resources, Cisco.com registered users can open a case online by using the TAC Case Open tool at the following website:
http://www.cisco.com/tac/caseopen
Contacting TAC by Telephone
If you have a priority level 1 (P1) or priority level 2 (P2) problem, contact TAC by telephone and immediately open a case. To obtain a directory of toll-free numbers for your country, go to the following website:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
P1 and P2 level problems are defined as follows:
•
•
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
AccessPath, AtmDirector, Browse with Me, CCDA, CCDE, CCDP, CCIE, CCNA, CCNP, CCSI, CD-PAC, CiscoLink, the Cisco NetWorks logo, the Cisco Powered Network logo, Cisco Systems Networking Academy, the Cisco Systems Networking Academy logo, Fast Step, Follow Me Browsing, FormShare, FrameShare, GigaStack, IGX, Internet Quotient, IP/VC, iQ Breakthrough, iQ Expertise, iQ FastTrack, the iQ Logo, iQ Net Readiness Scorecard, MGX, the Networkers logo, Packet, RateMUX, ScriptBuilder, ScriptShare, SlideCast, SMARTnet, TransPath, Unity, Voice LAN, Wavelength Router, and WebViewer are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, Discover All That's Possible, and Empowering the Internet Generation, are service marks of Cisco Systems, Inc.; and Aironet, ASIST, BPX, Catalyst, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, the Cisco IOS logo, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Enterprise/Solver, EtherChannel, EtherSwitch, FastHub, FastSwitch, IOS, IP/TV, LightStream, MICA, Network Registrar, PIX, Post-Routing, Pre-Routing, Registrar, StrataView Plus, Stratm, SwitchProbe, TeleRouter, and VCO are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries.
All other brands, names, or trademarks mentioned in this document or Web site are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0104R)
Copyright © 2001, Cisco Systems, Inc.
All rights reserved.
Guest
