Introduction
This document is to help customers find a stable software release for the enterprise switching platforms running Catalyst 9000 series switches. The information in this document is not meant to be exhaustive & is intended to serve as a general guidance to customers especially in cases of mass deployments/upgrades. Beyond these recommendations, if customers are required to run a release to utilize newer software features or hardware, the recommendation is to select Extended Maintenance (EM) release trains wherever possible.
For customers deploying Software Defined Access, please refer to the product compatibility matrix which is available here.
For customers looking for software recommendation on Cisco Catalyst 9800 Series Wireless Controllers, please refer to this page.
Cisco IOS XE Software Support
Each Cisco IOS XE software release is classified as either a Standard Maintenance release or an Extended Maintenance release.
Standard Maintenance Release - A sustaining support lifetime of 12 months from First Customer Shipment (FCS) with scheduled rebuilds. Examples are Cisco IOS XE Software releases 16.8, 16.10, and 16.11
Extended Maintenance Release - A sustaining support lifetime of 36 months from First Customer Shipment (FCS) with scheduled rebuilds. Examples are Cisco IOS XE Software releases 16.9, and 16.12
Note: Every subsequent third release (for example, Cisco IOS XE Software release 16.6, 16.9, 16.12 etc.) will be an Extended Maintenance release.
Given that Standard Maintenance releases have much shorter support lifetimes whereas Extended Maintenance releases have longer support with more scheduled rebuilds / bug fixes, it is recommended that customers stay on Extended Maintenance releases wherever possible.
Recommendations
The recommendations stated below are current as of May 2020, and these will be updated as and when appropriate.
| Product Family |
Product Details |
Recommended IOS-XE release |
| Non Stackwise-Virtual |
Stackwise-Virtual* |
| Catalyst 9200 |
9200L MultiGigabit Ethernet switch models
(C9200L-24PXG-2Y, C9200L-24PXG-4X, C9200L-48PXG-2Y, C9200L-48PXG-4X) |
16.12.3a |
not supported |
| 9200L (all other models) |
16.9.5 |
not supported |
| 9200 (all models) |
16.12.3a |
not supported |
| Catalyst 9300 |
9300 (all models) |
16.9.5 |
not supported |
| 9300L (all models) |
16.12.2 |
not supported |
|
9300-24S, 9300-48S |
16.12.2 |
not supported |
|
9300-24UB, 9300-24UXB, 9300-48UB |
16.12.2 |
not supported |
| Catalyst 9400 |
Supervisor 1XL 25G uplinks (C9400-SUP-1XL-Y) in any 9400 chassis |
16.9.5 |
16.12.2 |
| Supervisor Engine-1 or Supervisor Engine-1XL in 9404 chassis |
16.9.5 |
16.9.5 |
| Supervisor Engine-1 or Supervisor Engine-1XL in 9407 chassis |
16.9.5 |
16.9.5 |
| Supervisor Engine-1 or Supervisor Engine-1XL in 9410 chassis |
16.9.5 |
16.12.2 |
| C9400-LC-48H line card in any chassis |
16.12.2 |
16.12.2 |
| Catalyst 9500 |
9500 high performance models
(C9500-32C, C9500-32QC, C9500-48Y4C, C9500-24Y4C) |
16.9.5 |
16.12.2 |
| 9500 with Stackwise-Virtual links on C9500-NM-8X or C9500-NM-2Q modules |
does not apply |
16.12.2 |
| 9500 (all other models) |
16.9.5 |
16.9.5 |
| Catalyst 9600 |
9600 (all models) |
16.12.2 |
16.12.2 |
| Catalyst 3650 |
3650 (all models) |
16.9.5+ |
not supported |
| Catalyst 3850 |
3850-12XS, 3850-24XS, 3850-48XS |
16.9.5+ |
16.9.5+ |
| 3850 (all other models) |
16.9.5+ |
not supported |
* StackWise Virtual requires Network Advantage License on Catalyst 9000 Switches
+ If you are not prepared for smart licensing, then 16.6.7 is the recommended version for Catalyst 3850 and 3650 Switches.
Engineering Special Releases
In certain cases, critical bugs are made available on Engineering Special (ES) builds. These builds are not available on CCO (cisco.com). If you are running into any issues specific to your environment which is not already fixed in existing cisco.com releases, please contact Cisco Customer Exprience (CX) to explore the possibility of an Engineering Special (ES) code. Engineering Special builds are meant to be deployed for a limited time frame and customers are advised to move to the next maintenance rebuild as soon as it is available on cisco.com. Engineering special builds are fully supported by Cisco Customer Experience (CX) and the Business Unit (BU).
Important Caveats
| Identifier |
Headline |
Affected Version |
Workaround Available |
| CSCvt61769 |
ISSU upgrade: ISSU fails after stage 2, Standby SUP goes into ROMMON |
16.9.5 |
Yes |
| CSCvt22238* |
C9200L/C9200 : Interface counter/MAC learning/MAC ageing does not work/ 32 prefix stuck |
16.12.1, 16.12.2, 16.12.3, 17.1.1, 17.2.1 |
Yes |
*CSCvt22238 affects only C9200 and C9200L products, and is fixed in IOS-XE version 16.12.3a
Archived Caveats in Previously Recommended Releases
| Identifier |
Headline |
Affected Version |
Workaround Available |
Fixed Version |
| CSCvk70181 |
Memory Leak under Session Manager Daemon (sessmgrd/smd) |
16.9.4 |
No |
16.9.5 |
| CSCvq78529 |
IOSd Segmentation Fault on SGT enabled stack |
16.9.4 |
Yes |
16.9.5 |
For a complete list of resolved and open caveats in any software version, refer to the release notes.
Related Information
Cisco IOS XE 16 - Release Notes - Cisco
Cisco Support and Downloads
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