Guest

Cisco MDS 9000 NX-OS and SAN-OS Software

Cisco MDS 9000 Family Release Notes for Cisco MDS SAN-OS Release 2.1(2e)

 Feedback

Table Of Contents

Cisco MDS 9000 Family Release Notes
for Cisco MDS SAN-OS Release 2.1(2e)

Contents

Introduction

System Requirements

Components Supported

Determining the Software Version

Upgrading Your Cisco MDS SAN-OS Software Image

Performing a Disruptive Upgrade on a Single Supervisor MDS Family Switch

New Features in Cisco MDS SAN-OS Release 2.1(2e)

Limitations and Restrictions

VSFN Compatibility

iSCSI Proxy Initiators

Caveats

Resolved Caveats

Open Caveats

Related Documentation

Release Notes

Compatibility Information

Regulatory Compliance and Safety Information

Hardware Installation

Cisco Fabric Manager

Command-Line Interface

Troubleshooting and Reference

Installation and Configuration Note

Installation and Configuration Note

Obtaining Documentation

Cisco.com

Product Documentation DVD

Ordering Documentation

Documentation Feedback

Cisco Product Security Overview

Reporting Security Problems in Cisco Products

Obtaining Technical Assistance

Cisco Technical Support & Documentation Website

Submitting a Service Request

Definitions of Service Request Severity

Obtaining Additional Publications and Information


Cisco MDS 9000 Family Release Notes
for Cisco MDS SAN-OS Release 2.1(2e)


Release Date: March 17, 2006

Text Part Number: OL-7411-06 P0

This document describes the caveats and limitations for switches in the Cisco MDS 9000 Family. Use this document in conjunction with documents listed in the "Related Documentation" section.


Note Release notes are sometimes updated with new information on restrictions and caveats. Refer to the following website for the most recent version of the Cisco MDS 9000 Family Release Notes: http://www.cisco.com/en/US/products/hw/ps4159/ps4358/prod_release_notes_list.html


Table 1 shows the online change history for this document.

Table 1 Online History Table

Version
Date
Description

A0

3/2/2006

Release notes created.

B0

3/17/2006

Added CSCei02126.

C0

3/22/2006

Added CSCsd29338 and CSCsd72822.

D0

3/28/2006

Added CSCsd72822.

E0

4/20/2006

Added CSCsd73494.

F0

6/2/2006

Added CSCeg33121, CSCeg12962, CSCeg84871, CSCeh04183, CSCeh30951, CSCeh70232, CSCei36082, CSCei55208, CSCei79457, CSCsc46451, CSCsc75056, CSCsc76467, CSCsc95884, CSCsd47064, CSCsd79954, CSCeg53114, CSCei57342, CSCei58652, CSCei71686, CSCei86399, CSCei91676, CSCej08751, CSCsb89732, CSCsc09732, CSCsc20106, CSCsc33788, CSCsc40012, CSCsc48919, CSCsc60283, CSCsc93936, CSCsd07246, CSCsd12831, CSCsd22920, CSCsd25790, CSCsd30165, CSCsd34882, CSCsd53429, CSCsd58774, CSCsd60578, CSCsd70927, CSCsd71701, CSCsd73494, CSCsd75284, CSCsd76429, CSCsd79938, CSCsd81725, CSCsd82449, CSCsd89872, CSCsd94019, CSCsd94718, CSCsd93011, and CSCse14032.

Removed CSCed16845.

Updated the Upgrading section with a note about CSCei02126.

G0

07/10/2006

Corrected the CWDM part numbers in Table 2.

Removed CSCeg33121, CSCeg12962, CSCeg84871, CSCeg90336, CSCeh04183, CSCeh30951, CSCeh52973, CSCeh70232, CSCeh93109, CSCei10774, CSCei36082, CSCei55208, CSCei48889, CSCeh34828, CSCeg55238, CSCeg12383, CSCec31365, CSCei83322, CSCei91676, CSCej08751, CSCin92870, CSCin95789, CSCsd71701, CSCed81725

H0

07/14/2006

Revised DDTS CSCsc23435

I0

08/7/2006

Revised DDTS CSCsd89872 and CSCse84811.

J0

08/22/2006

Added DDTS CSCse65400.

K0

09/5/2006

Added DDTS CSCsd78967 and CSCse88606.

L0

09/13/2006

Added DDTS CSCsf21970

M0

11/15/2006

AddedDDTS CSCin95789, CSCsd81137, CSCse22145, CSCse41442, CSCse70275, CSCse71420, CSCsf96043, CSCsg12020, and CSCsg15392.

N0

02/23/2007

Added DDTS CSCsd92433, CSCse99087, CSCsg03171, CSCsg62359, and CSCsh27840.

O0

04/04/2007

Added DDTS CSCsd41578.

Added the section "Performing a Disruptive Upgrade on a Single Supervisor MDS Family Switch".

P0

08/24/2007

Added DDTS CSCsd83775.


Contents

This document includes the following sections:

Introduction

System Requirements

Upgrading Your Cisco MDS SAN-OS Software Image

New Features in Cisco MDS SAN-OS Release 2.1(2e)

Limitations and Restrictions

Caveats

Related Documentation

Obtaining Documentation

Documentation Feedback

Cisco Product Security Overview

Obtaining Technical Assistance

Obtaining Additional Publications and Information

Introduction

The Cisco MDS 9000 Family of Multilayer Directors and Fabric Switches provide industry-leading availability, scalability, security, and management, allowing you to deploy high performance storage-area networks with lowest total cost of ownership. Layering a rich set of intelligent features onto a high performance, protocol agnostic switch fabric, the Cisco MDS 9000 Family addresses the stringent requirements of large data center storage environments: uncompromising high availability, security, scalability, ease of management, and seamless integration of new technologies.

The Cisco MDS 9000 Family SAN-OS is the underlying system software that powers the Cisco MDS 9500 series, 9200 series, and 9100 series multilayer switches. The Cisco SAN-OS provides intelligent networking features such as multiprotocol and multitransport integration, virtual SANs (VSANs), advanced security, sophisticated debug analysis tools, and unified SAN management.

System Requirements

This section describes the system requirements for Cisco MDS SAN-OS Release 2.1(2e) and includes the following topics:

Components Supported

Determining the Software Version

Components Supported

Table 2 lists the software and hardware components supported by the Cisco MDS 9000 Family.


Note To use the Cisco Storage Services Enabler package, Cisco MDS SAN-OS Release 1.3(5) or later must be installed on the MDS switch.


Table 2 Cisco MDS 9000 Family Supported Software and Hardware Components  

Component
Part Number
Description
Applicable Product

Software

M95S1K9-2.1.2E

MDS 9500 Supervisor/Fabric-I, SAN-OS software.

MDS 9500 Series only

M92S1K9-2.1.2E

MDS 9216 Supervisor/Fabric-I, SAN-OS software.

MDS 9200 Series only

M91S1K9-2.1.2E

MDS 9100 Supervisor/Fabric-I, SAN-OS software.

MDS 9100 Series only

License

M9500ENT1K9

Enterprise package.

MDS 9500 Series

M9200ENT1K9

Enterprise package.

MDS 9200 Series

M9100ENT1K9

Enterprise package.

MDS 9100 Series

M9500FIC1K9

Mainframe package.

MDS 9500 Series

M9200FIC1K9

Mainframe package.

MDS 9200 Series

M9100FIC1K9

Mainframe package.

MDS 9100 Series

M9500FMS1K9

Fabric Manager Server package.

MDS 9500 Series

M9200FMS1K9

Fabric Manager Server package.

MDS 9200 Series

M9100FMS1K9

Fabric Manager Server package.

MDS 9100 Series

M9500EXT1K9

SAN Extension over IP package for IPS-8 module.

MDS 9500 Series

M9200EXT1K9

SAN Extension over IP package for IPS-8 module.

MDS 9200 Series

M9500EXT14K9

SAN Extension over IP package for IPS-4 module.

MDS 9500 Series

M9200EXT14K9

SAN Extension over IP package for IPS-4 module.

MDS 9200 Series

M9500EXT12K9

SAN Extension over IP package for MPS 14+2 module.

MDS 9500 Series

M9200EXT12K9

SAN Extension over IP package for MPS 14+2 module.

MDS 9200 Series

M9500SSE1K9

Storage Services Enabler package.

MDS 9500 Series with ASM or SSM

M9200SSE1K9

Storage Services Enabler package.

MDS 9200 Series with ASM or SSM

Chassis

DS-C9509

MDS 9509 director, base configuration (9-slot modular chassis includes 7 slots for switching modules and 2 slots for supervisor modules—SFPs1 sold separately).

MDS 9509 only

DS-C9506

MDS 9506 director (6-slot modular chassis includes 4 slots for switching modules and 2 slots for supervisor modules—SFPs sold separately).

MDS 9506 only

DS-C9216-K9

MDS 9216 16-port semi-modular fabric switch (includes 16 1-Gbps/2-Gbps Fibre Channel ports, power supply, and expansion slot—SFPs sold separately).

MDS 9216 only

DS-C9216A-K9

MDS 9216A 16-port semi-modular fabric switch (includes 16 1-Gbps/2-Gbps Fibre Channel ports, power supply, and expansion slot—SFPs sold separately).

MDS 9216A only

DS-C9216i-K9

MDS 9216i 16-port semi-modular fabric switch (includes 14 1-Gbps/2-Gbps Fibre Channel ports, 2 Gigabit Ethernet ports, power supply, and expansion slot—SFPs sold separately).

MDS 9216i only

DS-C9140-K9

MDS 9140 fixed configuration (non-modular) fabric switch (includes 8 full rate ports and 32 host-optimized ports).

MDS 9140 only

DS-C9120-K9

MDS 9120 fixed configuration, non-modular, fabric switch (includes 4 full rate ports and 16 host-optimized ports).

MDS 9120 only

Supervisor modules

DS-X9530-SF1-K9

MDS 9500 Supervisor/Fabric-I, module.

MDS 9500 Series only

Switching modules

DS-X9016

MDS 9000 16-port 1-Gbps/2-Gbps Fibre Channel module (SFPs sold separately).

MDS 9500 Series and 9200 Series

DS-X9032

MDS 9000 32-port 1-Gbps/2-Gbps Fibre Channel module (SFPs sold separately).

Services modules

DS-X9308-SMIP

8-port Gigabit Ethernet IP Storage Services module.

DS-X9304-SMIP

4-port Gigabit Ethernet IP Storage Services module.

DS-X9032-SSM

MDS 9000 32-port 1-Gbps/2-Gbps Fibre Channel Storage Services Module (SSM).

DS-X9560-SMC

Caching Services Module (CSM).

DS-X9302-14K9

14-port Fibre Channel/2-port Gigabit Ethernet Multiprotocol Services (MPS-14/2) module.

LC-type fiber-optic SFP

DS-SFP-FC-2G-SW

2-Gbps/1-Gbps Fibre Channel — short wavelength SFP.

MDS 9000 Family

DS-SFP-FC-2G-LW

2-Gbps/1-Gbps Fibre Channel — long wavelength SFP.

DS-SFP-FCGE-SW

1-Gbps Ethernet and 1-Gbps/2-Gbps Fibre Channel—short wavelength SFP.

DS-SFP-FCGE-LW

1-Gbps Ethernet and 1-Gbps/2-Gbps Fibre Channel — long wavelength SFP.

DS-SFP-GE-T

1-Gbps Ethernet SFP

CWDM2

DS-CWDM-xxxx

Gigabit Ethernet and 1-Gbps/2-Gbps Fibre Channel SFP LC interface xxxx nm, where xxxx = 1470, 1490, 1510, 1530, 1550, 1570, 1590, or 1610 nm.

MDS 9000 Family

DS-CWDM-MUX-4

Add/drop multiplexer for four CWDM wavelengths.

DS-CWDM-MUX-8

Add/drop multiplexer for eight CWDM wavelengths.

DS-CWDMCHASSIS

Two slot chassis for CWDM add/drop multiplexer(s).

Power supplies

DS-CAC-2500W

2500-W AC power supply.

MDS 9509 only

DS-CDC-2500W

2500-W DC power supply.

DS-CAC-4000W-US

4000-W AC power supply for US (cable attached).

DS-CAC-4000W-INT

4000-W AC power supply international (cable attached).

DS-CAC-1900W

1900-W AC power supply.

MDS 9506 only

DS-CDC-1900W

1900-W DC power supply.

DS-CAC-845W

845-W AC power supply.

MDS 9200 Series only

DS-CAC-300W

300-W3 AC power supply.

MDS 9100 Series only

CompactFlash

MEM-MDS-FLD512M

MDS 9500 supervisor CompactFlash disk, 512 MB.

MDS 9500 Series only

Port analyzer adapter

DS-PAA-2

A standalone Fibre Channel-to-Ethernet adapter that allows for simple, transparent analysis of Fibre Channel traffic in a switched fabric.

MDS 9000 Family

CD-ROM

M90FM-CD-212=

MDS 9000 Management Software and Documentation CD-ROM, spare.

MDS 9000 Family

1 SFP = small form-factor pluggable

2 CWDM = coarse wavelength division multiplexing

3 W = Watt


Determining the Software Version


Note We strongly recommend that you use the latest available software release supported by your vendor for all Cisco MDS 9000 Family products.


To determine the version of the Cisco MDS SAN-OS software currently running on a Cisco MDS 9000 Family switch using the CLI, log into the switch and enter the show version EXEC command.

To determine the version of the Cisco MDS SAN-OS software currently running on a Cisco MDS 9000 Family switch using the Fabric Manager, view the Switches tab in the Information pane, locate the switch using the IP address, logical name, or WWN, and check its version in the Release column.

Upgrading Your Cisco MDS SAN-OS Software Image

The Cisco MDS SAN-OS software is designed for mission-critical high availability environments. To realize the benefits of nondisruptive upgrades on the Cisco MDS 9500 Directors, we highly recommend that you install dual supervisor modules.

You can nondisruptively upgrade to Cisco MDS SAN-OS Release 2.1(2e) from any SAN-OS software release beginning with Release 1.3(x). If you are running an older version of the SAN-OS, first upgrade to Release 1.3(x), and then upgrade to Release 2.1(2e).


Note If you are upgrading to Cisco MDS SAN-OS 2.1(2e) from any prior SAN-OS software release, you should issue the copy running-config startup-config command immediatedly after you upgrade to Release 2.1(2e) and before you issue any other commands. The fix for caveat CSCei02126 that is included in this release removes any corrupted snmpTargetParamsName entries from the running configuration. But the startup configuration may still have the corrupted TargetParamsName entries. Therefore, it is mandatory that you issue the copy running-config startup-config command immediatedly after you upgrade to Release 2.1(2e) to clean up the corrupted snmpTarget entries from the startup configuration.


When downgrading from Cisco MDS SAN-OS Release 2.1(2e) to Release 1.3(x), you might need to disable new features in Release 2.1(2e) for a nondisruptive downgrade. Issuing the install all command from the CLI, or using Fabric Manager to perform the downgrade, enables the compatibility check. The check indicates if the upgrade can happen nondisruptively or disruptively depending on the current configuration of your switch and the reason.

Compatibility check is done:
Module  bootable          Impact  Install-type  Reason
------  --------  --------------  ------------  ------
     1       yes  non-disruptive       rolling
     2       yes      disruptive       rolling  Hitless upgrade is not supported
     3       yes      disruptive       rolling  Hitless upgrade is not supported
     4       yes  non-disruptive       rolling
     5       yes  non-disruptive         reset
     6       yes  non-disruptive         reset

At a minimum, you need to disable the default device alias distribution feature using the no device-alias distribute command in global configuration mode. The show incompatibility system bootflash:1.3(x)_filename command determines which additional features need to be disabled.

If you are upgrading from Cisco MDS SAN-OS Release 2.1(1x) to any image later than Release 2.1(2) and have IVR enabled, review CSCei88345 in the Cisco MDS 9000 Family Release notes for Cisco MDS SAN-OS Release 2.1(2b) for upgrade instructions.


Note Refer to the "Determining Software Compatibility" section of the Cisco MDS 9000 Family Configuration Guide for more details.


Performing a Disruptive Upgrade on a Single Supervisor MDS Family Switch

Cisco MDS SAN-OS software upgrades are disruptive on the following single supervisor Cisco MDS Family switches:

MDS 9120 switch

MDS 9140 switch

MDS 9216i switch

If you are performing an upgrade on one of those switches, you should follow the nondisruptive upgrade path listed in this section, even though the upgrade is disruptive. Following the nondisruptive upgrade path ensures that the binary startup configuration remains intact.

If you do not follow the upgrade path, the binary startup configuration is deleted because it is not compatible with the new image, and the ASCII startup configuration file is applied when the switch comes up with the new upgraded image. When the ASCII startup configuration file is applied, there may be errors. Because of this, we recommend that you follow the nondisruptive upgrade path.

New Features in Cisco MDS SAN-OS Release 2.1(2e)

There are no new features available for this release.

Limitations and Restrictions

This section lists the limitations and restrictions for this release.

VSFN Compatibility

For the latest VSFN compatibility information, refer to the Cisco MDS SAN-OS Release Compatibility Matrix for VERITAS Storage Foundation for Networks Software.

iSCSI Proxy Initiators

No more than 250 iSCSI proxy initiator sessions can be active on an IPS port.

Caveats

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, "O" indicates an open caveat and "R" indicates a resolved caveat.

Table 3 Open Caveats and Resolved Caveats Reference 

DDTS Number
Software Release (Open or Resolved)
2.1(2d)
2.1(2e)

Severity 1

CSCsd29338

O

R

Severity 2

CSCeh73149

O

O

CSCeh92604

O

O

CSCei02126

O

R

CSCei18830

O

O

CSCei19822

O

O

CSCei53783

O

O

CSCsc16506

O

R

CSCsc75056

O

O

CSCsc76467

-

O

CSCsc95884

O

R

CSCsd41578

O

O

CSCsd45429

O

O

CSCsd47064

O

O

CSCsd78967

O

O

CSCsd79954

O

O

CSCse65400

O

O

CSCse89151

O

O

CSCsh27840

O

O

Severity 3

CSCef56229

O

O

CSCeg27584

O

O

CSCeg37598

O

O

CSCeg53114

O

O

CSCeh33548

O

O

CSCeh41099

O

O

CSCeh51924

O

R

CSCeh75500

O

O

CSCeh88814

O

O

CSCei32317

O

O

CSCei57342

O

O

CSCei58652

O

O

CSCei71686

O

O

CSCei86399

O

O

CSCei91968

O

R

CSCin95686

O

O

CSCin95789

O

O

CSCsb89732

O

O

CSCsb90192

O

R

CSCsc09732

O

O

CSCsc20106

O

O

CSCsc23435

O

R

CSCsc24966

O

R

CSCsc28722

O

R

CSCsc31424

O

R

CSCsc33788

O

O

CSCsc40012

O

O

CSCsc48919

O

O

CSCsc57865

O

R

CSCsc60283

O

O

CSCsc68084

O

R

CSCsc72994

O

O

CSCsc93936

O

O

CSCsc97070

O

O

CSCsc98796

O

R

CSCsd02008

O

R

CSCsd07246

O

O

CSCsd12831

O

O

CSCsd21093

O

R

CSCsd22920

O

O

CSCsd25790

O

O

CSCsd30165

O

O

CSCsd34882

O

O

CSCsd53429

O

O

CSCsd58774

O

O

CSCsd60578

O

O

CSCsd70927

O

O

CSCsd72822

O

O

CSCsd73494

O

O

CSCsd75284

 

O

CSCsd76429

O

O

CSCsd79938

 

O

CSCsd81137

O

O

CSCsd81725

O

O

CSCsd81725

O

O

CSCsd82449

O

O

CSCsd83775

O

O

CSCsd89872

O

O

CSCsd92429

 

O

CSCsd94019

 

O

CSCsd94718

O

O

CSCsd93011

 

O

CSCse14032

 

O

CSCse22145

O

O

CSCse41442

 

O

CSCse70275

O

O

CSCse71420

O

O

CSCse84811

O

O

CSCse88606

O

O

CSCse99087

O

O

CSCsf21970

O

O

CSCsf96043

O

O

CSCsg03171

O

O

CSCsg12020

O

O

CSCsg15392

O

O

CSCsg62359

O

O

Severity 6

CSCsd92433

-

O


Resolved Caveats

CSCeh51924

Symptom: SNMP service might stop and restart because of a corrupted snmpTargetParamsEntry in the snmpTargetParamsTable. This corrupted entry is created when there is a null string in object snmpTargetParamsName as its index.

Workaround: Enter a name in the snmpTargetParamsName with at least one character when creating an snmpTargetParamsEntry.

CSCei02126

Symptom: If snmpTargetAddrName and snmpTargetParamsName are set to NULL in the SNMP host/target creation, then the SNMP process crashes and may cause a switchover to the standby supervisor module.

Workaround: When using third party tools or any other SNMP tool, set snmpTargetAddrName and snmpTargetParamsName to non-NULL values.

CSCei91968

Symptom: In a fabric with more than one switch, CFS or syslog can crash because of a PSS-FULL condition. This happens because of memory leakage in the persistent storage service (PSS) records stored by the CFS module.

CFS internal distributions cause a PSS leakage during one of the following events:

An application registration and deregistration. (This is at the rate of 1 PSS record or 60 bytes per event.)

An ISL Link flap. (This is at the rate of two PSS records per CFS registered application. For 10 CFS registered applications, a 1000 flaps would cause a leak of about 1 MB.)

In a stable fabric, application and regular CFS distributions do not result in PSS memory leakages.

Workaround: None. A switchover will help in cleaning up these records but the usage of the partition remains the same (dev/shm partition). However, CFS will reuse the freed space for further PSS storage.

CSCsb90192

Symptom: The CFS process crashes while processing a discovery response containing null data.

Workaround: None.

CSCsc16506

Symptom: The following syslog message is displayed:

Transmit Flow Control is seen for too long

followed by link flap of the affected port. This applies only in E port mode and TE port mode of operation on Storage Services Modules (SSM) (DS-X9032-SSM) interfaces and occurs only when class-F packets are dropped due to a timeout condition. Typically, the packet timeout happens when there is serious congestion in the network, forcing the packets to stay in the switch for more than the timeout period.

Workaround: Avoid configuring in E port mode or TE port mode on the Fibre Channel interfaces.

CSCsc95884

Symptom: The install all command may fail on an SSM when you downgrade from Cisco SAN-OS Release 3.0(1) to any SAN-OS 2.x release earlier than SAN-OS Release 2.1(2d) on a system with at least one SSM.

Workaround: Power down the SSM before you downgrade the SAN-OS software. After the downgrade, power up the SSM with the new boot variable set to the appropriate Release 2.x SSI image.

CSCsc23435

Symptom: In some cases, services modules with FCIP interfaces that are configured on a Cisco MDS 9216i Switch may experience an overflow of packets on their FCIP interfaces. The overflow of packets causes packet drops, resulting in an error log and a possible system reload. This symptom affects the following hardware:

8-port Gigabit Ethernet IPS Services module (DS-X9308-SMIP)

4-port Gigabit Ethernet IPS Services module (DS-X9304-SMIP)

MPS-14/2 module (DS-X9302-14K9)

MDS 9216i Switch (DS-C9216i-K9)

Workaround: None.

CSCsc24966

Symptom: The following commands can sometimes hang the terminal during execution:

show tech-support commands

tac-pac

Workaround: If you are connected through an SSH or Telnet session, shut down the session and restart a new one.

CSCsc28722

Symptom: Upgrading from a Cisco SAN-OS Release 1.3(x) image to a Release 2.x image can disrupt ongoing traffic because spurious RSCNs are generated during the upgrade. Hosts that have registered for the RSCN, using SCR, will receive these spurious RSCNs and hence the disruption. However, upgrading from Release 2.0(x) to Release 2.1(x) will not disrupt any traffic.

Workaround: Suppress the RSCNs on a per interface basis during the upgrade using the rscn suppress interface fc slot/port hidden command.


Note This configuration must be removed right after the upgrade, otherwise hosts that are registered for RSCN will never receive any RSCNs from then on.



Note This configuration will go into the running-config. Because the running-config will be saved to the startup-config during upgrade, ensure that the configuration is removed and saved after upgrading.


Follow these steps:

1. Issue the show rscn scr-table command to identify the port registered for RSCN.

2. Issue the show flogi database command to identify the Fibre Channel interface of the port.

3. Issue the config t command to enter configuration mode.

4. Issue the rscn suppress interface fc slot/port hidden command to suppress RSCNs on all affected interfaces.

5. Begin the upgrade progress as you normally would.

6. Issue the no rscn suppress interface fc slot/port hidden command to allow RSCNs on all affected interfaces.

7. Issue the exit command to return to EXEC mode.

8. Issue the copy running-config startup-config command to save the running-config to the startup-config.

CSCsc31424

Symptom: Issuing a no shutdown command on an interface causes the following message to display:

fc1/1: (error) port channel config in progress - config not allowed 

The following steps may reproduce the problem:

1. Remove a port from a PortChannel.

switch# config t
switch(config)# interface fc slot/port
switch(config-if)# no channel-group group-number

2. Cause a system switchover.

switch(config-if)# end
switch# system switchover


Note This problem does not always occur.


Workaround:

1. Configure a new PortChannel and add the interface.

switch# config t
switch(config)# interface fc slot/port
switch(config-if)# channel-group group-number

Where the PortChannel group-number does not exist.

2. Remove the new PortChannel.

switch(config-if)# exit
switch(config)# no interface port-channel group-number

3. Disable the interface.

switch(config)# interface fc slot/port
switch(config-if)# no shutdown

CSCsc57865

Symptom: A device alias cannot be renamed using Fabric Manager. Fabric Manager is polling the description of the device and not the name or alias for the device.

Workaround: Use the CLI to rename the device alias.

CSCsc68084

Symptom: Fabric Manager generates the following exception in the Fabric Manager log when trying to activate a zone set:

java.util.AbstractList$Itr.remove(Unknown Source) 

This problem occurs under the following circumstances:

You activate a new zone set in a VSAN using the Fabric Manager zoning dialog

The existing active zone set is not null.

One of the configured zones has a common zone member with one of the active zones (with the same zone name).

Workaround: None.

CSCsc98796

Symptom: If tape acceleration is enabled and the FCIP link is under a heavy load, an FCIP link can flap when a status frame is returned from the tape device with a check condition. This includes expected check condition status frames such as the early warning for end-of-media frames.

Workaround: None.

CSCsd02008

Symptom: During certain timing conditions, such as when a disk takes a long time to register FC4-type and FC4-feature information, IVR may not propagate the FC4-type and FC4-feature information to other VSANs and the information is missing from the name server.

Workaround: Perform the following steps on all IVR-enabled switches before activating the IVR zone set:

1. Use a hidden command to set an internal flag.

switch# config t
switch(config)# ivr knob set 0x4

2. If the IVR zone set is already active, disable and reenable the disk interface.

switch(config)# interface fc slot/port
switch(config-if)# shutdown
switch(config-if)# no shutdown
switch(config-if)# exit
switch(config)#

3. Save the running configuration to the startup configuration.

switch(config)# exit
switch# copy running-config startup-config

4. Verify the correct propagation of the FC4-type and FC4-feature.

switch# show fcns database vsan vsan-id

CSCsd21093

Symptom: Sometimes, IP-ACL show commands may time out and appropriate error messages are seen on the CLI screen. Also, DNS queries corresponding to IP addresses configured in ACL filter specifications are sent from the switch to the DNS server whenever a show ip access-list command is issued.

Workaround: No complete workaround for this problem exists. Partial workarounds include:

Disable DNS lookups on a switch using the no ip domain-lookup command in configuration mode. This command is a generic command that disables DNS lookups, which affects the IP-ACL manager and all the other IP services.Use this command with caution.

Selectively disable the DNS lookups before issuing IP-ACL show commands and turn it back on after the show command is completed.

CSCsd29338

Symptom: The port manager might crash and a switchover might occur when FICON is configured and the MDS switch is interoperating with a CNT device. This occurs when a port is UP, a link failure happens, and the remote node ID (RNID) retry timer is activated.

Workaround: None.

Open Caveats

CSCeh73149

Symptom: The VSAN suspend/resume operations facilitate network level reconfiguration and are not often used. The operations should not be used on a SANTap related VSAN.

Workaround: If VSAN suspend/resume operations must be used, first unprovision SANTap prior to using VSAN suspend/resume.

CSCeh92604

Symptom: Enabling IVR NAT on the same switch where write acceleration is enabled over a PortChannel with multiple FCIP links might result in frames not transferring from the source to the destination.

Workaround: Do not have all of the following on the same switch:

IVR NAT enabled

PortChannel of multiple FCIP links that can potentially carry IVR NAT traffic

FCIP write acceleration enabled

However, any two of the above three configurations are supported on the same switch.


Note IVR in non-NAT mode can be configured with FCIP PortChannels and FCIP write acceleration on the same switch.


CSCei18830

Symptom: Removing zones from an active zone set may generate a system message that the zone activation has failed because of an Accept Change Authorization (ACA) failure.

Workaround: None required. The IVR retries the activation and eventually the zone set activation succeeds.

CSCei19822

Symptom: An active IVR zone set on the local switch is not propagated when the commit session contains any other configuration changes.

Workaround: For Cisco SAN-OS Release 2.1(2) and later, perform an implicit commit without any changes. In the case of a merge failure and the IVR zone set is not active on remote switches but is active on a local switch, issue an implicit commit from the local switch to propagate the active zone set to the remote switches.

For releases prior to Release 2.1(2), the workaround is different. Add either a dummy member to an existing zone or add a dummy zone with dummy members to the currently active IVR zone set, and then reactivate the IVR zone set. Then issue the commit command, which will propagate the active zone set to other switches.

CSCei53783

Symptom: An iSCSI host cannot log in to one IPS port after many supervisor module switchovers.

Workaround: None.

CSCsc75056

Symptom: Installing an invalid license file may cause an MDS switch to reload.

Workaround: Recover the switch from the console port. Then request another license file from Cisco. Install the unaltered license file.


Note Do not edit or modify an MDS license file as this makes the file invalid.


CSCsc76467

Symptom: The IPFC manager fails when it receives an FARP packet for a nonexistent VSAN interface. This situation may occur when a host bus adapter (HBA) on a host directly registers as an IPFC interface.

Workaround: None.

CSCsd41578

Symptom: When a port continuously flaps, the Fibre Channel Name Server may crash and cause a supervisor switchover.

Workaround: Use a different port or check the host bus adapter (HBA) port.

CSCsd45429

Symptom: When performing a switchover, upgrade, or downgrade, logs may be incorrectly synced between supervisor modules. As a consequence, the syslog process is left with some inconsistencies that may cause one or more of the following symptoms:

A process may fail while displaying logs for a show logging command. After three failures of the syslog process, the switch forces a switchover.

Certain small sections of the log may appear out of order, either preceded by or followed by broken log lines, or both. For example, a few lines referring to 2006 Jan 17 may appear embedded between other log lines that refer to 2006 Jan 20, with a broken line before and after the entry.

Null characters (ASCII code 0) may appear in the log. These characters cause empty lines to be displayed when using the show logging command and appreciably slow down the log output over slow console connections.

Workaround: Clear the logs immediately after performing a switchover, upgrade, or downgrade by issuing the following command as soon as the switchover, upgrade, or downgrade successfully completes:

switch# clear logging logfile


Note When you execute the clear logging logfile command, old logs are lost. If you need to keep a copy of the old logs, redirect the output of the show logging command to a file before the switchover, upgrade, or downgrade to copy the output to a safe location.


CSCsd47064

Symptom: The Forwarding Information Base (FIB) process may fail if an IVR zone set push from the Fabric Manager fails because of an SNMP timeout and various switches send conflicting active IVR zone sets.

Workaround: There are two ways to address the problem:

Examine the output of the show interface mgmt 0 command to see if there is a duplex mismatch that may cause an SNMP timeout.

Use the ivr distribute command to enable Cisco Fabric Services (CFS) distribution for IVR zone or zone sets and the topology through Inter-Switch Links (ISLs).

CSCsd78967

Symptom: If you remove a port from a port channel or shutdown a member port of a port-channel, the ConnUnitPortStatus/State trap is not sent.

Workaround: None.

CSCsd79954

Symptom: A VSAN that is connected to a McDATA switch with interop mode 1 participates in IVR. The VSAN has devices that are zoned for IVR with a device with domain IDs not within the 97 to 127 range. A loss of connectivity between the hosts and storage devices that are zoned for IVR and the devices in a normal zone might occur.

Workaround: None.

CSCse65400

Symptom: If a module reloads or reinitializes on its own because of an error, and the port channel has one of its member ports on this module, in rare cases, the peer port of this member port will not forward traffic after the module comes back up.

Workaround: Issue the shutdown/no shutdown command sequence on the port channel. If the problem still persists, issue the shutdown/no shutdown command sequence on the affected ports.

CSCse89151

Symptom: If you have more than 800 zones in an active zoneset for a single VSAN, your MDS 9000 switch might reload if you move from basic zoning to enhanced zoning and then read the active zoneset information.

Workaround: Lower the number of zones in an active zoneset for a single VSAN to less than 800.

CSCsh27840

Symptom: While using an FCIP link for remote SPAN, it is possible that the FCIP link may flap.

Workaround: Do not use FCIP links for Remote SPAN.

CSCef56229

Symptom: If an iSCSI initiator is configured differently on multiple switches, iSNS might report more targets to the initiator than the initiator can access. An iSCSI initiator would get a target error if it attempts to establish a connection.

Workaround: None.

CSCeg27584

Symptom: Creating a role that has the VSAN policy "deny" requires an Enterprise License on the switch. If such a role is created on a switch that does not have the license, the switch exhibits different behavior when distribution is turned on as compared with distribution is turned off, as follows:

If distribution is turned off, creation of the role is rejected.

If distribution is turned on, creation of the role succeeds but the VSAN policy continues to be "permit."

Workaround: None.

CSCeg37598

Symptom: The iSNS server might crash when iSCSI is disabled and iSNS is enabled using Fabric Manager.

Workaround: None.

CSCeg53114

Symptom: WWNs assigned to iSCSI initiators by the system can inadvertently be returned to the system when an upgrade fails or a manual downgrade is performed, such as when an older iSAN software version is booted up without using the install all command. In these scenarios, the system can later assign those WWNs again to other initiators, which causes conflicts. This bug is a duplicate of CSCei17870.

Workaround: None.

CSCeh33548

Symptom: Tape devices can only be accessed over an FCIP tunnel in a PortChannel with write acceleration enabled if SID/DID based load balancing is used in the VSANs.

Workaround: Disable write acceleration or enable SID/DID based load balancing in the VSANs if you have tape device traffic going over an FCIP tunnel in a PortChannel.

CSCeh41099

Symptom: Protocol and port numbers specified in an IP-ACL assigned to an IPsec profile (crypto map) are ignored. In an interop between Microsoft's iSCSI initiator with IPsec encryption with Cisco MDS 9000 Series switches, if IPsec is configured in the Microsoft iSCSI initiator (also the IPsec/IKE initiator), the host IPsec implementation sends the following IPsec policy:

source IP - Host IP, dest IP - MDS IP,
source port - any, dest port - 3260 (iSCSI), protocol - 6 (TCP).

Upon receiving this policy, the protocol and port numbers are ignored and only the IP addresses for the IPsec policy are used. Thus, although iSCSI traffic is encrypted, non-iSCSI traffic (such as ICMP ping) sent by the Microsoft host in clear text is dropped in the MDS port.

Workaround: None.

CSCeh75500

Symptom: A device that interfaces with SANTap may request SANTap to create a session for an ITL that was previously requested, and ITL checking is not robust.

Workaround: Have the device validate the ITL and ensure that it does not send a request for a duplicate ITL.

CSCeh88814

Symptom: When SANTap is unprovisioned, the control virtual target (CVT) object is not getting cleaned up on the supervisor module.

Workaround: To ensure that cleanup occurs, first issue the no santap module slot-number appl-vsan vsan-id command to clean up the CVT, and then unprovision SANTap.

CSCei32317

Symptom: When configuring a remote SPAN (RSPAN), the Fibre Channel tunnel does not come up if it goes through more than one hop.

Workaround: Configure the Fibre Channel tunnel explicit-path option and list every IP hop between the source and destination.

CSCei57342

Symptom: If a link is isolated because of a fabric-binding database mismatch, a reactivation of the corrected fabric-binding database may not initialize the ports.

Workaround: Use the shut command followed by the no shut command to manually disable then enable the link.

CSCei58652

Symptom: When a reconfigure fabric (RCF) frames occurs on a VSAN, the ports may be left in a state where the fabric binding is incorrect.

Workaround: None.

CSCei71686

Symptom: If iSCSI is enabled before FCIP, then the qos command that is configurable under a FCIP interface is not available as an option. The reverse is true as well. If FCIP is enabled first, then the qos command is not an option for iSCSI interfaces.

Workaround: None.

CSCei86399

Symptom: A TACACS+ key that includes the less than (<) and greater than (>) characters fails when copied to an ftp server, and then copied back to the MDS switch.

Workaround: None. This issue has been resolved.

CSCin95686

Symptom: The RRD graph in the Performance Manager does not refresh on a web client opened in Mozilla or Netscape.

Workaround: Do not use a proxy server or the browser's Refresh button.

CSCin95789

Symptom: When you configure Cisco Traffic Analyzer to capture traffic on one or more interfaces on a Windows platform, the configuration web page might not show that the interface has been selected for traffic capture even though traffic capture on that interface is enabled.

Workaround: Check the logs to clarify that the correct interface has been selected.

CSCsb89732

Symptom: After an upgrade from SAN-OS Release 1.3(2a) to any release lower than SAN-OS Release 3.0(1), you may see errors like the following in the syslog file:

2005 Sep 15 17:36:55 coral %SYSMGR-3-CFGWRITE_SRVFAILED: Service "fcc" failed to store 
its configuration (error-id 0xFFFFFFFF).
2005 Sep 15 17:36:56 coral %SYSMGR-2-CFGWRITE_ABORTED: Configuration copy aborted.
2005 Sep 15 17:36:59 coral %SYSMGR-3-CFGWRITE_FAILED: Configuration copy failed 
(error-id 0x401E0000).
2005 Sep 15 17:37:43 coral %SYSMGR-3-CFGWRITE_SRVFAILED: Service "fcc" failed to store 
its configuration (error-id 0xFFFFFFFF).
2005 Sep 15 17:37:44 coral %SYSMGR-2-CFGWRITE_ABORTED: Configuration copy aborted.
2005 Sep 15 17:37:47 coral %SYSMGR-3-CFGWRITE_FAILED: Configuration copy failed 
(error-id 0x401E0000).
2005 Sep 15 17:38:31 coral %SYSMGR-3-CFGWRITE_SRVFAILED: Service "fcc" failed to store 
its configuration (error-id 0xFFFFFFFF).
2005 Sep 15 17:38:32 coral %SYSMGR-2-CFGWRITE_ABORTED: Configuration copy aborted.
2005 Sep 15 17:38:35 coral %SYSMGR-3-CFGWRITE_FAILED: Configuration copy failed 
(error-id 0x401E0000).

Workaround: After the upgrade, issue the copy running-config startup-config command before issuing the show startup-config command.

If you have already encountered this issue, perform a stateful switchover, then issue the copy running-config startup-config command.

CSCsc09732

Symptom: If there is a port software failure at the same time as a configuration change for an FCIP interface, the configuration change can fail and subsequent configuration and show commands will fail for that FCIP interface.

Workaround: None.

CSCsc20106

Symptom: On a Cisco MDS 9020 Fabric Switch, Fabric Manager displays a 4-Gbps Inter-Switch Link (ISL) as a 3-Gbps ISL.

Workaround: None.

CSCsc33788

Symptom: In rare circumstances, after you issue the install all command to upgrade an MDS switch, the upgrade may fail because the installer process fails. When this occurs, you may see a message like the following:

%CALLHOME-2-EVENT: SW_CRASH alert for service: installer
The installer failed to respond for 10 times. Exiting ...
Unable to send exit to installer. Return code -1

If you upgrade from 1.3(x) to 2.1 or from 2.0(x) to 2.1 and the upgrade fails, and if after the upgrade failure the supervisor modules are running the new software version, but some modules are running the older software version, then the next attempt to execute the install all command will trigger this problem.

You should not encounter this problem if you upgrade from 2.1 to a higher version.

Workaround: There are two ways to address this issue:

To non-disruptively upgrade all modules that are running the older software version, issue the install module module-number image command.

To disruptively upgrade the modules, issue the reload module module-number force-dnld command, or reinstall the module.

CSCsc40012

Symptom: If you use Telnet or SSH to access an MDS switch, TACACS+ authentication with the domain\username format does not work.

Workaround: Use username@domain-name.xxx.com for TACACS+ authentication over Telnet or SSH.

CSCsc48919

Symptom: When a data path on a Storage Service Module (SSM) is congested, diagnostic frames that are delivered as best effort may be dropped. The Online Health Management System (OHMS) may bring down a Fibre Channel port on an SSM when congestion occurs and declare the port as failed.

Workaround: To work around this issue, enter the following command:

switch(config)# no system health module ssm-module-number loopback failure-action

CSCsc60283

Symptom: In rare circumstances, an MDS 9000 Family switch may start displaying the following error messages in the log, several times per second:

%KERN-1-SYSTEM_MSG: eepro100: wait_for_cmd_done timeout 0x801249d2 0xf0!

When this situation occurs, Telnet access through the mgmt0 interface is impossible.

Workaround: Access the switch through the console port.

CSCsc72994

Symptom: If a user does not have a Fabric Manager Server (FMS) license, a demo or trial license counter for enhanced FMS features starts even when FMS enhanced features are not configured. You might see the following message:

%LICMGR-3-LOG_LIC_NO_LIC: No license(s) present for feature FM_SERVER_PKG. 
Application(s) shutdown in 119 days.

This might occur after upgrading to Cisco SAN-OS 2.1(2x). FMS status becomes InUse although none of its features were or are actually used. This starts the 120 day evaluation period counter for FMS enhanced features.


Note This does not have any impact on using the Fabric Manager or Device Manager for managing the switch for basic feature operations.


Workaround: Install a Fabric Manager Server license.

CSCsc93936

Symptom: When you attempt to copy a running configuration or startup configuration to a tftp server in a single step, the operation fails.

Workaround: Copy the configuration in two steps:

switch# copy running-config volatile:
switch# copy volatile: tftp: 

CSCsc97070

Symptom: The port software might fail if more than 250 iSCSI sessions are present on an IPS port configured for proxy initiator mode.

Workaround: Configure no more than 250 iSCSI sessions on an IPS port with proxy initiator mode configured.

CSCsd07246

Symptom: Following a successful login by a host, the show interface command lists an interface as "isolated due to port loopback." In Fabric Manager, the Device Manager shows the same information about the interface.

Workaround: None.

CSCsd12831

Symptom: You may be unable to add or delete a specific user name through the command-line interface, while you can add or delete other user names with no problem. The user name in question does not display in the output of a show user-account command; even so, it cannot be added or deleted.

In this situation, you may see an error like the following:

username <username>  password 0 <passwd>
Internal CLI error: Success error in messaging
Authentication token manipulation error
could not change password for user:<username>
no username <username>
user not present
{could not delete user <username>}

Workaround: Open a case with Cisco TAC. There are no steps you can take to correct this problem

CSCsd22920

Symptom: If the SNMP server location is configured with an empty value, then a subsequent show running-config command will only show one character for the SNMP server contact. If the SNMP server location is changed, then the show running-config command will show the number of characters in the SNMP server location plus one for the SNMP server contact.

Workaround: The string length of the configured SNMP location should be greater than or equal to the string length of the SNMP contact.

To make the string length for the SNMP location more or equal to the string length of the configured SNMP contact, a user can do one of the following:

Configure the SNMP location and SNMP contact with the same string length.

Add additional blank space in the SNMP location configuration.

CSCsd25790

Symptom: If an internal reconfiguration occurs on an MDS switch, the message that is sent to the log is the same message that is sent when external reconfigure fabric (RCF) frames are sent from the principal switch.

Workaround: None.

CSCsd30165

Symptom: On an MDS 9500 Series switch running Cisco SAN-OS Release 2.1(1b), the output of the show version command shows the wrong value for the last reset, but this does not cause any operational problems on the switch. The output may look like the following:

kernel uptime is 137 days 3 hours 49 minute(s) 32 second(s)
 Last reset at -447213060 usecs after Sun Mar 18 05:59:15 2018
   Reason: Not defined
   System version:    Service: ยง"H

Workaround: None.

CSCsd34882

Symptom: The SAN-OS software creates syslog message after a configuration change through the command -line interface The syslog message looks like this:

Vatican# 2006 Feb 8 09:00:33 Vatican %VSHD-5-VSHD_SYSLOG_CONFIG_I: Configuring console 
from pts/1 (dhcp-peg3-vl30-144-254-7-182.cisco.com) 

Using the Fabric Manager to make the same configuration change does not result in the same syslog message:

Vatican# 2006 Feb 8 09:00:56 Vatican %PORT-5-IF_DOWN_ADMIN_DOWN: %$VSAN 1%$ Int erface 
fc1/5 is down (Administratively down) 

Workaround:None.

CSCsd53429

Symptom: After you enter the ivr zone name command to configure a zone, the switch displays a message that may be misleading:

switch# config t
Enter configuration commands, one per line.  End with CNTL/Z.
switch(config)# ivr zone name abc 
fabric is locked for configuration. Please commit after configuration is done.
switch(config-ivr-zone)#

The displayed message has been changed:

switch# config t
Enter configuration commands, one per line.  End with CNTL/Z.
switch(config)# ivr zone name abc 
fabric is now locked for configuration. Please 'commit' configuration when done.
switch(config-ivr-zone)#

Workaround: None.

CSCsd58774

Symptom: The following configuration causes excessive data collisions and reduced throughput on the management port of an MDS switch Supervisor 1 module:

Management port configuration — Speed:100 Mbps, Duplex: Full
Switch port configuration — Speed: 100 Mbps, Duplex: Full

Resulting mode on management port — Speed: 100 Mbps, Duplex: Half
Resulting mode on switch port — Speed: 100 Mbps, Duplex: Full

Workaround: Because an MDS switch always autonegotiates the duplex mode and defaults to half duplex if the autonegotiation fails, you should configure the ports as follows:

Management port configuration — Speed: 100 Mbps, Duplex: Auto
Switch port configuration — Speed: Auto, Duplex: Auto

Resulting mode on MDS — Speed: 100 Mbps, Duplex: Full
Resulting mode on switch port — Speed: 100 Mbps, Duplex: Full

CSCsd60578

Symptom: A problem in Fibre Channel write acceleration on the Storage Services Module exhibited itself as a 10% to 15% performance drop once SCSI flows were established in both directions in relation to a SCSI initiator SCSI target pair.

This issue is applicable only in configurations where a bidirectional SCSI flow is established for a given SCSI initiator SCSI target pair. In other words, for a SCSI flow in one direction, a given node in a SCSI initiator SCSI target pair acts as SCSI initiator, and for the SCSI flow in the other direction, the same node acts as a SCSI target.

Workaround. None.

CSCsd70927

Symptom: Report collection in the Fabric Manager's Performance Manager stops after 48 hours. The data from the 48 hours is saved, but the connection to the database appears to be lost.

Workaround: None.

CSCsd72822

Symptom: If a switch has multiple SSMs with the SCSI flow feature enabled, an SSM may fail to come up when you perform an upgrade or reload.

Workaround: Before attempting to upgrade or reload an SSM, remove SCSI flow provisioning. Once the SSM comes back up, enable SCSI flow provisioning again.

Follow these steps:

1. Issue the following command to remove the provisioning:

switch(config)# no ssm enable feature scsi-flow force module module-number

2. Issue the following command to upgrade the SSM:

switch# install all system bootflash:m9500-sf1ek9-mz.2.1.2d.bin kickstart 
bootflash:m9500-sf1ek9-kickstart-mz.2.1.2d.bin ssi 
bootflash:m9000-ek9-ssi-mz.2.1.2j.bin

3. Issue the following command to reenable the SCSI flow feature when the SSM comes back online:

switch(config)# ssm enable feature scsi-flow module module-number

4. If the ssm enable feature scsi-flow module command fails, verify that the SSM is online using the following command:

switch# show module 

5. Once the SSM is online, issue the following command:

switch# reload module module-number

6. Repeat Step 3 to reenable the SCSI flow feature.


Note The force option should be used only in Step 1.


CSCsd73494

Symptom: If an iSCSI port receives protocol data units (PDUs) for a write command after it has been aborted by a task management function (TMF), the buffers for these PDUs may be freed twice and this can lead to a port software failure on the iSCSI port.

Workaround: None.

CSCsd75284

Symptom: When multiple tape drives are exposed to a switch over one target port, they appear as multiple LUNs behind the single target port. In this type of configuration, the FCIP link may occasionally get out of sync during error recovery, which may cause the FCIP link to flap.

Workaround: While there is no workaround that can prevent this situation from occurring, you can disable tape acceleration for this type of configuration. The write acceleration feature continues to provide some acceleration over the FCIP link.

CSCsd76429

Symptom: FCIP tape acceleration causes a flap in the FCIP link when it receives duplicate CHECK CONDITION status frames from a tape device.

Workaround: Because there is no workaround when the tape drive is functioning in this manner, we recommend that you turn off FCIP tape acceleration.

CSCsd79938

Symptom:After using the ip access-group command to configure an access list for the mgmt interface and saving the running configuration to the startup configuration, the ip access-group command is not present following a reboot of the running configuration. However, the command is in the startup configuration, and the access list is still in the configuration, but is not applied to the mgmt interface.

Workaround: Reconfigure the command or issue a copy startup-config running-config command to put the command back in place.

CSCsd81137

Symptom: Duplicate entries within an FC alias might cause an ISL isolation between your MDS 9000 switch and a Brocade switch.

Workaround: Remove duplicate entries from the Brocade switch and the link will come up.

CSCsd81725

Symptom: If many iSCSI initiators issue writes with immediate or unsolicited data to the iSCSI interface, the result may be a buffer congestion condition that may in turn lead to a B2B credit issue on the FC ports. This may cause these ports to flap.

Workaround: Disable immediate and unsolicited data on the iSCSI initiators.

CSCsd82449

Symptom: Mode 1 FCIP compression performance degrades if the Fibre Channel frames received are 1 KB in size.

Workaround: None.

CSCsd83775

Symptom: A Fibre Channel Inter-Switch Link (ISL) does not come up and it displays a fabric binding database mismatch error when fabric binding is activated. Thi s problem may be seen when a supervisor switchover occurs or is performed and this ISL comes up. The fabric binding merge activity detects an incompatible database and fails to bring up the link because an incorrect domain ID is being used by the fabric binding module. The fabric binding module on the switch where the switchover occurs would have cleared its local domain ID and be using a domain ID of zero.

Workaround: Issue the fcdomain restart vsan vsan-id command in the VSANs of interest.

CSCsd89872

Symptom: When using Cisco MDS SAN-OS Release 2.1(2e) or earlier to configure PortChannels, the following message may be displayed:

Last membership update failed: port-channel: required service is not responding 
(err_id 0x402B No port

If this issue occurs, any attempt to delete the PortChannel will fail and no additional operations can be performed on that specific PortChannel that gave the error.

Workaround: Upgrade from Cisco SAN-OS Release 2.1(2e) or earlier to Release 3.0(2a) to prevent the problem from occurring. If the problem has already occurred, an upgrade to Release 3.0(2a) will not correct the problem. Issue the write erase command and reboot the system to correct this problem.

CSCsd92429

Symptom: The output from the show tech-support details command contains the following error message:

`show system internal xbar internal all`
*** cmd parse error ***

Workaround: To obtain logs for the xbar manager, issue the following commands:

show system internal xbar internal event-history module slot

show system internal xbar internal event-history sync slot

show system internal xbar internal event-history msgs

show system internal xbar internal event-history errors

CSCsd94019

Symptom: In Fabric Manager, the Device Alias sort function does not work correctly.

Workaround: None.

CSCsd94718

Symptom: In Fabric Manager, the local zone database is not synchronized.

Workaround: None.

CSCsd93011

Symptom: When upgrading to Cisco SAN-OS Release 3.0(1) from an earlier version, the upgrade might fail if there is not enough empty space in the bootflash of the standby supervisor module. The module must be able to hold the kickstart image, the system image, and the SSI image, even though the SSI image does not need to be copied to the standby supervisor module. The upgrade process uses the size of the SSI image to calculate the space required to sync the software images onto the standby supervisor module. The SSI image might be counted as many times as there are Storage Services Modules (SSMs) in the system.

The SSI image is counted for an SSM if any of the following conditions are met:

If the SSI image has been configured in bootvar for the SSM.

If the SSI bootvar is specified on the command line when the install all command is issued.

If the SSI bootvar is manually preset, rather than specified on the command line.

Workaround: Make sure there is enough empty space in the bootflash of the standby supervisor module. The module must be able to hold the kickstart image, the system image, and the SSI image, even though the SSI image does not need to be copied to the standby supervisor module (as explained in the Symptom).

CSCse14032

Symptom: The ISNS server process terminates when ISNS-SERVER is enabled on a switch that has more than 100 iSCSI initiators.

Workaround: None.

CSCse22145

Symptom: CFS coordinated distribution events are not logged in the syslogs.

Workaround: Use the show cfs internal session-history name command to see the coordinated distribution events that are logged.

CSCse41442

Symptom: Issuing the show zone member fcid command on your Cisco MDS 9000 switch might not display the zones with that member FC ID.

Workaround: Configure zone membership by using either pWWN, pWWN + LUN, FC ID, or FC ID + LUN.

CSCse70275

Symptom: The Qlogic 2460 HBA fails to remote boot when it connects to a VT instantiated by SANTap on the SSM because the Qlogic 2460 BIOS sends a test ready unit with an invalid command reference number (CRN) and task attribute field. This same HBA can boot when SANTap and the SSM are not part of the configuration.

Workaround:Use the Qlogic 2340 HBA.

CSCse71420

Symptom: If you have multiple switches with IVR, and there is a mismatch of IVR VSAN topology and IVR zones which were corrected later, you might get an error message in the logs %FSPF-3-IPC_PROC_ERR: Error in processing IPC message : Opcode = 68, Error code = 401a0013

Workaround: None.

CSCse84811

Symptom: In a system with autocreate PortChannel configured, if there are multiple link flaps or configuration changes on a PortChannel, the PortChannel Manager process memory might run out causing the PortChannel Manager process to crash.

Workaround: Issue the write erase command and reload the switch.

CSCse88606

Symptom: Setting a value higher than 4 for the maximum number of times a packet is retransmitted before TCP closes the connection might product unexpected results. This would occur during a link FCIP tunnel recovery after a short downtime.

Workaround: Configure the TCP maximum retransmissions to values between 1 and 4 only.

CSCse99087

Symptom: A user called snmp-user can successfully log into an MDS switch through the CLI, but cannot log in through Fabric Manager or Device Manager. The login attempt fails with this error: SNMP: Unknown username

Workaround: None.

CSCsf21970

Symptom: If you issue immediate, back-to-back commands to delete and then create FCIP interfaces, the internal port service might crash.

Workaround: Wait 5 seconds between the delete and the following create command for a given FCIP interface.

CSCsf96043

Symptom:No alerts are issued for FCS errors on the sup-fc0 port even though it might affect Fibre Channel communication.

Workaround: None.

CSCsg03171

Symptom: The dynamic port VSAN membership (DPVM) failed after the number of F ports exceeded 64 and a port flap occurred.

Workaround: Keep the number of F ports in a switch below 64.

CSCsg12020

Symptom: If your switch is up for a long period of time, such as more than 100 days, zone set activation in Fabric Manager might not reflect the latest results and active-local differences may still be shown.

Workaround: Close and reopen Fabric Manager with the "Accelerate Discovery" option unchecked. This reflects the latest change, but might need to be done after every change.

CSCsg15392

Symptom: If a Generation 1 module has any port that is administratively up, but operationally down when you upgrade from SAN-OS Release 2.x to either Release 3.0(1) or Release 3.0(2x), you might experience traffic disruption on that module.

Workaround: Use the shutdown command to shut all the ports operationally down and administratively up on all the Generation 1 modules before upgrading from SAN-OS Release 2.x to Release SAN-OS 3.0(x) or Release 3.0(2x). After the upgrade is complete, the ports can be brought to an administratively up state using the no shutdown command.

CSCsg62359

Symptom: If a user attempts to log in using TACACS+ authentication to an MDS switch or an SSH server configured on the switch, the login might fail if password-authentication is the first login method the user tries.

Workaround: Use the keyboard-interactive method as the first login method for SSH.

CSCsd92433

Symptom: Additional information is needed from the show tech-support command.

Workaround: None.

Related Documentation

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/

Release Notes

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

Compatibility Information

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

Hardware Installation

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

Command-Line Interface

Cisco MDS 9000 Family Software Upgrade and Downgrade Guide

Cisco MDS 9000 Family CLI Quick Configuration Guide

Cisco MDS 9000 Family 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

Installation and Configuration Note

Cisco MDS 9000 Family SSM Configuration Note

Cisco MDS 9000 Family Port Analyzer Adapter Installation and Configuration Note

Obtaining Documentation

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.

Cisco.com

You can access the most current Cisco documentation at this URL:

http://www.cisco.com/techsupport

You can access the Cisco website at this URL:

http://www.cisco.com

You can access international Cisco websites at this URL:

http://www.cisco.com/public/countries_languages.shtml

Product Documentation DVD

The Product Documentation DVD is a comprehensive library of technical product documentation on a portable medium. The DVD enables you to access multiple versions of installation, configuration, and command guides for Cisco hardware and software products. With the DVD, you have access to the same HTML documentation that is found on the Cisco website without being connected to the Internet. Certain products also have .PDF versions of the documentation available.

The Product Documentation DVD is available as a single unit or as a subscription. Registered Cisco.com users (Cisco direct customers) can order a Product Documentation DVD (product number DOC-DOCDVD= or DOC-DOCDVD=SUB) from Cisco Marketplace at this URL:

http://www.cisco.com/go/marketplace/

Ordering Documentation

Registered Cisco.com users may order Cisco documentation at the Product Documentation Store in the Cisco Marketplace at this URL:

http://www.cisco.com/go/marketplace/

Nonregistered Cisco.com users can order technical documentation from 8:00 a.m. to 5:00 p.m. (0800 to 1700) PDT by calling 1 866 463-3487 in the United States and Canada, or elsewhere by calling 011 408 519-5055. You can also order documentation by e-mail at tech-doc-store-mkpl@external.cisco.com or by fax at 1 408 519-5001 in the United States and Canada, or elsewhere at 011 408 519-5001.

Documentation Feedback

You can rate and provide feedback about Cisco technical documents by completing the online feedback form that appears with the technical documents on Cisco.com.

You can submit comments about Cisco documentation 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.

Cisco Product Security Overview

Cisco provides a free online Security Vulnerability Policy portal at this URL:

http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html

From this site, you will find information about how to:

Report security vulnerabilities in Cisco products.

Obtain assistance with security incidents that involve Cisco products.

Register to receive security information from Cisco.

A current list of security advisories, security notices, and security responses for Cisco products is available at this URL:

http://www.cisco.com/go/psirt

To see security advisories, security notices, and security responses as they are updated in real time, you can subscribe to the Product Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed. Information about how to subscribe to the PSIRT RSS feed is found at this URL:

http://www.cisco.com/en/US/products/products_psirt_rss_feed.html

Reporting Security Problems in Cisco Products

Cisco is committed to delivering secure products. We test our products internally before we release them, and we strive to correct all vulnerabilities quickly. If you think that you have identified a vulnerability in a Cisco product, contact PSIRT:

For Emergencies only — security-alert@cisco.com

An emergency is either a condition in which a system is under active attack or a condition for which a severe and urgent security vulnerability should be reported. All other conditions are considered nonemergencies.

For Nonemergencies — psirt@cisco.com

In an emergency, you can also reach PSIRT by telephone:

1 877 228-7302

1 408 525-6532


Tip We encourage you to use Pretty Good Privacy (PGP) or a compatible product (for example, GnuPG) to encrypt any sensitive information that you send to Cisco. PSIRT can work with information that has been encrypted with PGP versions 2.x through 9.x.

Never use a revoked or an expired encryption key. The correct public key to use in your correspondence with PSIRT is the one linked in the Contact Summary section of the Security Vulnerability Policy page at this URL:

http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html

The link on this page has the current PGP key ID in use.

If you do not have or use PGP, contact PSIRT at the aforementioned e-mail addresses or phone numbers before sending any sensitive material to find other means of encrypting the data.


Obtaining Technical Assistance

Cisco Technical Support provides 24-hour-a-day award-winning technical assistance. The Cisco Technical Support & Documentation website on Cisco.com features extensive online support resources. In addition, if you have a valid Cisco service contract, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not have a valid Cisco service contract, contact your reseller.

Cisco Technical Support & Documentation Website

The Cisco Technical Support & Documentation website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The website is available 24 hours a day, at this URL:

http://www.cisco.com/techsupport

Access to all tools on the Cisco Technical Support & Documentation website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register at this URL:

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


Note Use the Cisco Product Identification (CPI) tool to locate your product serial number before submitting a web or phone request for service. You can access the CPI tool from the Cisco Technical Support & Documentation website by clicking the Tools & Resources link under Documentation & Tools. Choose Cisco Product Identification Tool from the Alphabetical Index drop-down list, or click the Cisco Product Identification Tool link under Alerts & RMAs. The CPI tool offers three search options: by product ID or model name; by tree view; or for certain products, by copying and pasting show command output. Search results show an illustration of your product with the serial number label location highlighted. Locate the serial number label on your product and record the information before placing a service call.


Submitting a Service Request

Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool provides recommended solutions. If your issue is not resolved using the recommended resources, your service request is assigned to a Cisco engineer. The TAC Service Request Tool is located at this URL:

http://www.cisco.com/techsupport/servicerequest

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 engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.

To open a service request 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 list of Cisco TAC contacts, go to this URL:

http://www.cisco.com/techsupport/contacts

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)—An existing 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 operations 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 the network is impaired, while 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

Information about Cisco products, technologies, and network solutions is available from various online and printed sources.

The Cisco Product Quick Reference Guide is a handy, compact reference tool that includes brief product overviews, key features, sample part numbers, and abbreviated technical specifications for many Cisco products that are sold through channel partners. It is updated twice a year and includes the latest Cisco offerings. To order and find out more about the Cisco Product Quick Reference Guide, go to this URL:

http://www.cisco.com/go/guide

Cisco Marketplace provides a variety of Cisco books, reference guides, documentation, and logo merchandise. Visit Cisco Marketplace, the company store, at this URL:

http://www.cisco.com/go/marketplace/

Cisco Press publishes a wide range of general networking, training and certification titles. Both new and experienced users will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press at this URL:

http://www.ciscopress.com

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:

http://www.cisco.com/packet

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:

http://www.cisco.com/go/iqmagazine

or view the digital edition at this URL:

http://ciscoiq.texterity.com/ciscoiq/sample/

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/ipj

Networking products offered by Cisco Systems, as well as customer support services, can be obtained at this URL:

http://www.cisco.com/en/US/products/index.html

Networking Professionals Connection is an interactive website for networking professionals to share questions, suggestions, and information about networking products and technologies with Cisco experts and other networking professionals. Join a discussion at this URL:

http://www.cisco.com/discuss/networking

World-class networking training is available from Cisco. You can view current offerings at this URL:

http://www.cisco.com/en/US/learning/index.html