Table Of Contents
Cisco MDS 9020 Fabric Switch Release Notes
for Cisco MDS 9000 FabricWare Release 2.1(3)
Release Date: September 5, 2006
Text Part Number: OL-6990-02 A0
This document describes the caveats and limitations for the Cisco MDS 9020 Fabric Switch. Use this document in conjunction with the documents listed in the "Related Documentation" section.
This document includes the following sections:
Table 1 shows the online change history for this document.
The Cisco MDS 9020 Fabric Switch offers Fibre Channel fabric-switching services that enable maximum performance and ensure high reliability. This switch combines robust and flexible hardware architecture and storage management intelligence. This powerful combination enables highly available, scalable storage networks that provide advanced security and unified management features. The Cisco MDS 9020 Fabric Switch provides essential storage networking features that include advanced security, debug tools, and unified SAN management.
Note No configuration is needed on the Cisco MDS 9020 Fabric Switch for interoperability with Brocade and McData switches. For information about configuring these third-party switches, refer to the Cisco MDS 9000 Family Switch-to-Switch Interoperability Configuration Guide.
This section describes the system requirements for Cisco MDS 9000 FabricWare Release 2.1(3) and includes the following topics:
Software and Hardware Supported
Table 2 lists the software and hardware components supported by the Cisco MDS 9020 Fabric Switch.
Table 2 Cisco MDS 9020 Fabric Switch Software and Hardware Components
Component Part Number Description Applicable Products
MDS 9020 Supervisor/Fabric-I, FabricWare Release 2.1(3)
MDS 9020 switch
MDS 9020 20-Port 4-Gbps Fibre Channel Fabric Switch
MDS 9020 switch
LC-type fiber-optic SFP1
1-, 2- or 4-Gbps Fibre Channel — short wavelength SFP
MDS 9000 Family
1-, 2- or 4-Gbps Fibre Channel — long wavelength SFP
MDS 9000 Family
1-, 2- or 4-Gbps Fibre Channel — long wavelength SFP
MDS 9000 Family
MDS 9000 Management Software and Documentation CD-ROM, spare
MDS 9000 Family
1 SFP = small form-factor pluggable
Determining the Software Version
Note We strongly recommend that you use the latest available software release supported by your vendor for the Cisco MDS 9020 Fabric Switch.
To determine the version of the Cisco MDS 9000 FabricWare software currently running on a Cisco MDS 9020 Fabric Switch using the CLI, log into the switch and enter the show version EXEC command.
To determine the version of the Cisco MDS 9000 FabricWare software currently running on a Cisco MDS 9020 Fabric Switch using the Fabric Manager, from the Switches tab in the information pane, locate the switch using its IP address, logical name, or WWN, and then check its version in the Release column.
The Cisco MDS 9000 FabricWare software is designed for high availability environments. As new software releases become available, you can nondisruptively upgrade the switch.
To perform an automated software upgrade on a switch, follow these steps:
Step 1 Log in to the switch through the console.
Step 2 Create a backup of your existing configuration file, if required.
Step 3 Download the firmware image file to the volatile: file system:
switch#copy ftp://10.20.102.98/firmware/latest_mpc volatile:latest_mpc
Step 4 Perform the upgrade by entering the install all command.
switch#install all system volatile:latest_mpcPerforming configuration copy.
Unpacking image - this may take several seconds...
Step 5 Exit the switch console, and open a new terminal session to view the upgraded switch using the show module command.
If the configuration meets all guidelines when the install all command is entered, the switch is upgraded.
For additional information about upgrading your software image, refer to the "Software Images" chapter of the Cisco MDS 9020 Fabric Switch Configuration Guide and Command Reference, Release 2.x.
Note If you would like to request a copy of the source code under the terms of either GPL or LGPL, please send an e-mail to firstname.lastname@example.org.
Limitations and Restrictions
This section lists the limitations and restrictions for this release.
You must only configure pWWN-type zoning on an MDS switch running Cisco SAN-OS if there is a Cisco MDS 9020 switch running FabricWare in the same fabric to avoid Inter-Switch Link (ISL) isolation. It is important to remove all non-pWWN-type zone entries in the VSAN that connects to the Cisco MDS 9020 switch, prior to merging fabrics.
For additional information on zoning, refer to the Cisco MDS 9020 Fabric Switch Configuration Guide and Command Reference.
Minimum SAN-OS Release for Mixed Fabric with Other MDS 9000 Switches
Cisco SAN-OS Release 2.1(2b) is the minimum software release that must be running on a Cisco MDS 9000 Family switch that is installed in the same fabric with a Cisco MDS 9020 switch.
This section lists the open and resolved caveats for this release. Use Table 3 to determine the status of a particular caveat. In the table, "R" indicates a resolved caveat, and "O" indicates an open caveat.
Table 3 Caveats for Cisco MDS 9020 FabricWare Release 2.1(3)
DDTS Number State Severity 1
Resolved FabricWare Caveats
Symptom: After successive switch offline/online changes, SNMP may crash due to an inadequate time-stamp buffer.
Symptom: SNMP coldstart traps return wrong OIDs for both SNMP v1 and v2.
Symptom: The date or time randomly advances after switch resets and power cycles.
Symptom: The firmware upgrade check is incorrect, which disallows upgrading to future releases.
Symptom: The firmware does not support Large-block NAND flash.
Symptom: With the Emulex LP9002 HBAs, it may take up to 2 minutes for the HBA to log in when performing a cable pull or reinsertion.
Symptom: When using the AB378A 4-Gbps HBA, the link is not reset following the loop initialization and before the FLOGI.
Symptom: Some ports report the last change time inaccurately.
Symptom: Excessive CRC errors occur on a 4-Gbps link transferring a specific data pattern.
Symptom: Using a zone name or zone set name that is the same as the switch name that appears as the CLI prompt causes an error when you edit the zone or zone set through Cisco Fabric Manager.
Workaround: Change either the zone set name, the zone name, or the CLI prompt
Open FabricWare Caveats
Symptom: If a Cisco MDS 9020 switch is used as the seed switch for Fabric Manager discovery in a mixed fabric of Cisco MDS 9000 Series switches, some ISL links might be missing.
Workaround: Use a Cisco MDS 9100, Cisco MDS 9200, or Cisco MDS 9500 Series switch as the seed switch or rediscover the network if it is not possible to have them as seed switches.
Symptom: When a fabric including a Cisco MDS 9020 Fabric Switch and third-party devices is discovered using Fabric Manager, where the Cisco MDS 9020 Fabric Switch is used as a seed for the discovery, the map might not display some of the end devices (hosts and disks) connected to the third-party switches. When the zone with these devices is highlighted on the Fabric Manager map, the devices on the third-party switches are shown as "not in fabric." The CLI displays for FCNS and zone information are correct.
Symptom: When an SFP is inserted into a Cisco MDS 9020 Fabric Switch, the initial state of the switch may indicate that the SFP is absent.
Workaround: Issue the shutdown/no shutdown commands on the switch port to put the port in the correct state.
Symptom: If you are running Cisco FabricWare 2.1(3) on a Cisco MDS 9020 Fabric Switch that is managed by a version of Cisco Fabric Manager or Device Manager that is earlier than Release 2.1(3), Cisco Fabric Manager or Device Manager will ask you if you want to upgrade. If you respond yes to this prompt, the upgrade will fail because Cisco Fabric Manager or Device Manager cannot be upgraded from the MDS 9020 switch.
Workaround: Do not respond yes to this prompt because Cisco Fabric Manager or Device Manager cannot be upgraded from the MDS 9020 switch.
If you wish to upgrade Cisco Fabric Manager or Device Manager, download the appropriate JAR file from this location:
This section lists the Cisco MDS 9000 FabricWare related documentation. For information on the entire Cisco MDS 9000 Family documentation set, use the Cisco MDS SAN-OS Documentation Locator at: http://www.cisco.com/en/US/products/ps5989/products_documentation_roadmap09186a00804500c1.html.
•Cisco MDS 9020 Fabric Switch Release Notes for Cisco MDS 9000 FabricWare Releases
•Cisco MDS 9000 Family Release Notes for Cisco MDS SAN-OS Releases
•Cisco MDS 9000 SAN-OS Hardware and Software Compatibility Information
•Cisco MDS 9000 Family Interoperability Support Matrix
Regulatory Compliance and Safety Information
•Regulatory Compliance and Safety Information for the Cisco MDS 9000 Family
•Cisco MDS 9020 Fabric Switch Hardware Installation Guide
Cisco Fabric Manager
•Cisco MDS 9000 Family Fabric Manager Configuration Guide
•Cisco MDS 9000 Fabric Manager Online Help
•Cisco MDS 9000 Fabric Manager Web Services Online Help
•Cisco MDS 9000 Family CLI Configuration Guide
•Cisco MDS 9020 Fabric Switch Configuration Guide and Command Reference
Troubleshooting and Reference
•Cisco MDS 9020 Fabric Switch MIB Quick Reference
•Cisco MDS 9020 Fabric Switch System Messages Reference
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