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This document highlights minimum, recommended, and latest code versions for Dell Technologies Enterprise and Data Center Infrastructure products. Dell carefully evaluates and monitors code deployment data to ensure that product releases meet our stringent expectations to provide our customers with reliable products and solutions.
Updated: July 27, 2026
ID: 000205512
After upgrading to Fabric OS (FOS) 9.1.1c, unable to run inline commands from UNIX or Linux server to the switch with the "fosexec" commands.
Updated: May 19, 2026
ID: 000218645
Affected products after NX OS 9.4.2a upgrade:
Cisco MDS 9000 NX-OS and SAN-OS Software, Cisco MDS 9100 Series Multilayer Fabric Switches, Cisco MDS 9200 Series Multiservice Switches, Cisco MDS 9300 Series Multilayer Fabric Switches, Cisco MDS 9500 Series Multilayer Directors, Cisco MDS 9700 Series Multilayer Directors
Updated: May 23, 2026
ID: 000353884
This article provides steps to back up and restore Zones using DCNM.
Updated: May 19, 2026
ID: 000217625
This issue is seen when the audit logs are getting filled for the switches, receive notification email alerts from the switches, or when any switch is idle for some time and no events are generated.
Updated: May 18, 2026
ID: 000215691
This KB provides steps to collect switch #show tech-support through DCNM.
Updated: May 18, 2026
ID: 000215515
The purpose of Smart Zoning is to reduce the amount of administrative overhead that is required to add new hosts to the SAN with the addition of a few keywords.
Updated: May 16, 2026
ID: 000206541
Learn how the MyService360 services analytics dashboard integrates the Dell AIOps (formerly CloudIQ) Health Score into the Install Base views. This integration streamlines services and product health management by IT admins using the MyService360 and Dell AIOps portals. Verify supported products by portal and access helpful Dell AIOps resources.
Updated: May 16, 2026
ID: 000206380
Downgrade from 8.5.1 to earlier 8.x versions fails to execute due to compatibility error in snmp config.
Updated: May 16, 2026
ID: 000206287
Domain IDs uniquely identify a switch in a Virtual Storage Area Network (VSAN). A switch may have different domain IDs in different VSANs. The domain ID is part of the overall Fibre Channel (FC) ID.
The configured domain ID can be preferred or static. By default, the configured domain ID is 0 (zero) and the configured type is preferred. Domain IDs can range from 1 to 239.
The 0 (zero) value can be configured only if you use the preferred option.
Updated: May 15, 2026
ID: 000203078
End devices unable to communicate - FCNS rejecting to all FC CT queries with 'logical busy'. Because end devices cannot get proper responses to their queries, they will not be able to communicate with one another.
Updated: May 13, 2026
ID: 000197900
Connectrix MDS : 97xx Chassis information missing with error message %PLATFORM-2-PS_UNSUPPORTED
Updated: May 09, 2026
ID: 000185047
SCG, Base64 encoding, Cisco, ESRS script, password Base64 Encoding
Updated: May 08, 2026
ID: 000183204
On a zone activation, all HBAs zoned to a VPLEX front-end port are logged out and lose a path.
Updated: May 07, 2026
ID: 000181952
How to perform NX-OS upgrade on the MDS switches
Updated: May 07, 2026
ID: 000180494
Connectrix: IP_FCMAC_CNT_STATS_ERRORS_RX_BAD_WORDS_FROM_DECODER on admin down port
Updated: May 05, 2026
ID: 000167889
Device manager UI is showing the fan status indicator as amber, even though the switch shows all fans up.
Updated: May 01, 2026
ID: 000064633
Both power supply fans reported failed on MDS 9396S.
Updated: April 18, 2026
ID: 000063322
"Interface fcx/y Slowport Count = ## Credit Delay" messages are streaming in "show logging" log from 16 Gbps switches.
Updated: April 17, 2026
ID: 000052588
NPV on MDS 9396S - Traffic stopped on NP uplink Port-channel member
Updated: March 13, 2026
ID: 000029052
MDS switch with CFS ipv4/ipv6 enabled reloads unexpectedly.
Updated: March 05, 2026
ID: 000181696
Here are the steps to configure the tx-/rx-datarate policy on an MDS switch.
These steps are not disruptive.
They do not affect the production traffic; they only change when the switch records information.
After this there will be a new active policy that has the same two counters as the previous slowdrain policy with the additional tx-/rx-datarate counter.
Any ports that go to 80% Tx or Rx utilization for 10 seconds will get an alert.
Note: This is a common request TAC makes when customers are concerned about performance in a fabric.
Updated: February 24, 2026
ID: 000189878
End device FC port directly attached to an MDS Fabric switch goes to errored state after ISSU/ISSD activity.
Conditions:
This issue applies to the following fabric switches only:
Cisco MDS 9132T
Cisco MDS 9148S
Cisco MDS 9148T
Cisco MDS 9220i
Cisco MDS 9396S
Cisco MDS 9396T
Further, the ISSU/ISSD is between any two of the following Cisco NX-OS versions:
8.4(1), 8.4(1a)
8.4(2), 8.4(2a), 8.4(2b), 8.4(2c)
8.5(1)
Updated: February 24, 2026
ID: 000192572
Disable Single Bit Error-Correcting Code (ECC) errors from being logged in Syslog.
Updated: February 18, 2026
ID: 000035897
Connectrix: Cisco MDS Isolation of interface (reason: merge requires domains that are not allowed)
Updated: October 20, 2025
ID: 000055689
Dell Connectrix MDS Cisco remediation is available for CLI vulnerability that could be exploited by malicious users to compromise the affected system.
Updated: October 13, 2025
ID: 000379436
MDS-9396S Switch logged module ASIC error, FC ports not impacted.
Updated: September 29, 2025
ID: 000056270
Dell Connectrix (Cisco) MDS DCNM remediation is available for an NX-OS vulnerability that may be exploited by malicious users to compromise the affected system.
Updated: September 18, 2025
ID: 000201621
Dell Connectrix (Cisco) remediation is available for multiple Spring vulnerabilities that may be exploited by malicious users to compromise the affected system.
Updated: September 18, 2025
ID: 000201622
Dell Connectrix Cisco MDS 9000 Switches remediation is available for the Cisco Discovery Protocol service of Cisco NX-OS Software that may allow an unauthenticated, adjacent attacker to cause the service to restart, resulting in a denial of service (DoS) condition.
Updated: September 18, 2025
ID: 000201287