Table Of Contents
Cisco MDS 9020 Fabric Switch Release Notes
for Cisco MDS 9020 FabricWare Release 2.1(2)
Release Date: August 24, 2005
Text Part Number: OL-6990-01 D0
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 on-line change history for this document.
Table 1 On-Line History Change
Revision Date Description
Created release notes
Added interoperability information (note).
Corrected SFP part number.
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(2) 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 2.1.2
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
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.
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 prior to merging fabrics.
For additional information on zoning, refer to the Cisco MDS 9020 Fabric Switch Configuration Guide and Command Reference.
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, "O" indicates an open caveat, and "C" indicates a closed caveat.
Table 3 Caveats for Cisco MDS 9020 Fabricware Release 2.1.2
DDTS Number State Severity 2
Closed FabricWare Caveats
Symptom: When Cisco VPN client version 3.6.3 is installed but not used, some of the ISLs might be missing from the Fabric Manager map if an MDS 9020 switch is used as a seed switch for the discovery of the fabric. An SNMP GET-BULK timeout occurs because of an incompatibility between the TCP/IP stack on the MDS 9020 switch and the client stack being configured or tuned during installation of the Cisco VPN client on the client itself.
Workaround: If you connect through Cisco VPN client 3.6.3 and then open Fabric Manager, it will discover properly.
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 display, the devices on the third party switches are shown as 'not in fabric'. CLI displays for FCNS and zone information are correct.
Related Cisco SAN-OS Caveats
Cisco MDS 9000 Family switches must be running Cisco MDS SAN-OS Release 2.1(2) to work properly with a Cisco MDS 9020 switch. This section lists the Cisco SAN-OS caveats related to Cisco FabricWare.
The following caveats are resolved in Cisco SAN-OS Release 2.1(2):
Symptom: If the Cisco MDS 9020 switch is loaded with more devices than recommended, timeouts may occur on a Cisco MDS 9000 Family switch running Cisco MDS SAN-OS Release 2.1(1a) or earlier, when Name Server queries are issued to the loaded Cisco MDS 9020 switch. The queries are retried to the point where the Cisco MDS 9000 Family switch can crash. In Cisco MDS FabricWare Release 2.1(2), the retries are limited to mitigate this effect.
Workaround: Upgrade the Cisco MDS 9000 Family switches to Cisco MDS SAN-OS Release 2.1(2).
Symptom: If a device registers symbolic port names on the Cisco MDS 9020 switch, the same symbolic port names cannot be properly propagated across VSANs through an IVR fabric where the Cisco MDS 9020 switch is an edge switch in the IVR topology.
Symptom: When devices with specific FC4-type log-in to a Cisco MDS 9000 Series switch and the Cisco MDS 9020 switch issues a GE_FT query to a Cisco MDS 9000 Series switch running Cisco MDS SAN-OS Release 2.1(1a) or earlier, the query might be rejected. This will result in that name server entry on the Cisco MDS 9020 switch not having FC4 type information of the device logged into the Cisco MDS 9000 Series switch. The affected FC4 type is 255.
Workaround: Upgrade the Cisco MDS 9000 Family switches to Cisco MDS SAN-OS Release 2.1(2).
The documentation set for the Cisco MDS 9000 Family includes the following documents. To find a document online, use the Cisco MDS SAN-OS Documentation Locator at: http://www.cisco.com/en/US/products/ps5989/products_documentation_roadmap09186a00804500c1.html.
For information on IBM TotalStorage SAN Volume Controller Storage Software for the Cisco MDS 9000 Family, refer to the IBM TotalStorage Support website: http://www.ibm.com/storage/support/2062-2300/
•Cisco MDS 9000 Family Release Notes for Cisco MDS SAN-OS Releases
•Cisco MDS 9000 Family Release Notes for Storage Services Interface Images
•Cisco MDS 9000 Family Release Notes for Cisco MDS SVC Releases
•Cisco MDS 9000 Family Release Notes for Cisco MDS 9000 EPLD Images
•Cisco MDS 9000 SAN-OS Hardware and Software Compatibility Information
•Cisco MDS 9000 Family Interoperability Support Matrix
•Cisco MDS SAN-OS Release Compatibility Matrix for IBM SAN Volume Controller Software for Cisco MDS 9000
•Cisco MDS SAN-OS Release Compatibility Matrix for Storage Service Interface Images
Regulatory Compliance and Safety Information
•Regulatory Compliance and Safety Information for the Cisco MDS 9000 Family
•Cisco MDS 9500 Series Hardware Installation Guide
•Cisco MDS 9200 Series Hardware Installation Guide
•Cisco MDS 9216 Switch Hardware Installation Guide
•Cisco MDS 9100 Series Hardware Installation Guide
•Cisco MDS 9020 Fabric Switch Hardware Installation Guide
Cisco Fabric Manager
•Cisco MDS 9000 Family Fabric Manager Quick Configuration Guide
•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 Software Upgrade and Downgrade Guide
•Cisco MDS 9000 Family CLI Quick Configuration Guide
•Cisco MDS 9000 Family CLI Configuration Guide
•Cisco MDS 9000 Family Command Reference
•Cisco MDS 9000 Family Quick Command Reference
•Cisco MDS 9020 Fabric Switch Configuration Guide and Command Reference
•Cisco MDS 9000 Family SAN Volume Controller Configuration Guide
Troubleshooting and Reference
•Cisco MDS 9000 Family Troubleshooting Guide
•Cisco MDS 9000 Family MIB Quick Reference
•Cisco MDS 9020 Fabric Switch MIB Quick Reference
•Cisco MDS 9000 Family SMI-S Programming Reference
•Cisco MDS 9000 Family System Messages Reference
•Cisco MDS 9020 Fabric Switch System Messages Reference
Installation and Configuration Note
•Cisco MDS 9000 Family SSM Configuration Note
•Cisco MDS 9000 Family Port Analyzer Adapter Installation and Configuration Note
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