3000 Series Low Latency Switches
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Specifications
- Software Release: Cisco NX-OS Release 10.3(8)M
- Supported Platforms: Cisco Nexus 3000 Series
- Image Type: 64-bit image only
Product Information
The Cisco Nexus 3000 Series NX-OS Release 10.3(8)M is a
PSIRT-only release with no new software features, bug caveats, or
hardware updates. It supports a 64-bit image format and is
compatible with specific devices in the Cisco Nexus 3500 and 3600
Series.
Product Usage Instructions
Supported Hardware
The supported hardware includes switches such as Cisco Nexus
3524-XL, Cisco Nexus 3548-XL in the 3500 Series, and devices like
Cisco Nexus 3636C-R and Cisco Nexus 36180YC-R in the 3600
Series.
Image Compatibility
The supported 64-bit image filename begins with nxos64-msll (for
example, nxos64-msll.10.3.8.M.bin) and is compatible with Cisco
Nexus 3600 series fixed switches and Cisco Nexus 3500-XL series
switches.
Power Supplies and Fans
Power supplies such as AC and DC variants like N2200-PAC-400W,
N2200-PDC-400W are supported along with fan options like
NXA-FAN-30CFM-B, NXA-FAN-30CFM-F.
FAQ
Are there any new software features in Release 10.3(8)M?
No, there are no new software features included in this
release.
What is the supported image type for the Cisco Nexus 3000
Series?
The supported image type is a 64-bit image only; the 32-bit
image is no longer supported.
Which devices are supported by Cisco NX-OS Release
10.3(8)M?
The release supports devices in the Cisco Nexus 3500 and 3600
Series, including specific switch models.
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Cisco Nexus 3000 Series NX-OS Release Notes
Release 10.3(8)M
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Note: The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product.
Introduction
Cisco NX-OS Release 10.3(8)M software is a PSIRT-only release with no features or bug caveats. Changes to this document:
Date
Description
July 7, 2025
Cisco NX-OS Release 10.3(8)M became available.
New and Enhanced Software Features
New Software Features
Cisco NX-OS Release 10.3(8)M does not include any new software features for the Cisco Nexus 3000 Series.
New Enhanced Features
Cisco NX-OS Release 10.3(8)M does not include any new enhanced features for the Cisco Nexus 3000 Series.
Hardware Features
Cisco NX-OS Release 10.3(8)M does not include any new hardware features for the Cisco Nexus 3000 Series. This release does not include any EPLD updates.
Release Image
Cisco Nexus 3000 Series platforms support only 64-bit image. The 64-bit Cisco NX-OS image filename begins with “nxos64-msll” (for example, nxos64-msll.10.3.8.M.bin) and this image is supported on Cisco Nexus 3600 series fixed switches and Cisco Nexus 3500-XL series witches. 32-bit image is no longer supported.
Open Issues
There are no open issues for Cisco Nexus 3000 Series in Cisco NX-OS Release 10.3(8)M.
Resolved Issues
There are no resolved issues for Cisco Nexus 3000 Series in Cisco NX-OS Release 10.3(8)M.
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Device Hardware
The following tables list the Cisco Nexus 3500 and Cisco Nexus 3600 Series hardware that Cisco NX-OS Release 10.3(8)M supports. For additional information about the supported hardware, see the Hardware Installation Guide for your Cisco Nexus 3500 and Cisco Nexus 3600 Series devices.
Cisco Nexus 3500 Switches
Product ID
Description
N3K-C3524P-XL
Cisco Nexus 3524-XL switch
N3K-C3548P-XL
Cisco Nexus 3548-XL switch
Cisco Nexus 3500 Series Fans, Fan Trays, and Power Supplies
Product ID
Description
N2200-PAC-400W
Cisco Nexus 2000 or 3000 400W AC power supply, forward airflow (port side exhaust)
N2200-PAC-400W-B
Cisco Nexus 2000 or 3000 400W AC power supply, reverse airflow (port side intake)
N2200-PDC-400W
Cisco Nexus 2000 or 3000 400W DC power supply, forward airflow (port side exhaust)
N3K-PDC-350W-B
Cisco Nexus 2000 or 3000 350W DC power supply, reverse airflow (port side intake)
NXA-FAN-30CFM-B
Cisco Nexus 2000 or 3000 individual fan, reverse airflow (port side intake)
NXA-FAN-30CFM-F
Cisco Nexus 2000 or 3000 individual fan, forward airflow (port side exhaust)
Cisco Nexus 3600 Switches
Product ID
Description
N3K-C3636C-R
The Cisco Nexus 3636C-R is a 1 rack unit (RU) switch with 36 100-Gigabit QSFP28 ports, 40-Gigabit QSFP, 2 management ports, 1 console port, and 1 USB port. The switch supports both port-side exhaust and port-side intake airflow schemes. The switch has two power supplies, one for operations and the other for redundancy. Both power supplies must be either AC power supplies or DC power supplies.
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Product ID N3K-C36180YC-R
Description
The Cisco Nexus 36180YC-R is a 1 rack unit (RU) switch with 48 1/10/25Gigabit SFP ports and 6 40Gigabit QSFP/100-Gigabit QSFP28 ports, 1 management port, 1 console port, and 1 USB port. The switch supports both port-side exhaust and port-side intake airflow schemes. The switch has two power supplies, one for operations and the other for redundancy. Both power supplies must be either AC power supplies or DC power supplies.
From Cisco NX-OS Release 10.3(3)F, the following AC ports are supported on Cisco Nexus 36180YC-R (N3K-C36180YC-R):
AC port-side exhaust (NXA-PAC-750W-PE)
AC port-side intake (NXA-PAC-750W-PI)
The following table provides information about spares support:
The Typical/Minimum port-side intake and fan speed percentage is 50% and the maximum port-side intake and fan speed percentage is 100%.
The Typical/Minimum port-side exhaust and fan speed percentage is 70% and the maximum port-side exhaust and fan speed percentage is 100%.
For information about N3K-C36180YC-R, see Cisco Nexus 3600 Hardware Installation Guide.
Upgrade and Downgrade
To perform a software upgrade or downgrade, follow the instructions in the Cisco Nexus 3500 Series NXOS Software Upgrade and Downgrade Guide and Cisco Nexus 3600 Series NX-OS Software Upgrade and Downgrade Guide. For information about an In Service Software Upgrade (ISSU), see the Cisco NX-OS ISSU Support Matrix.
MIB Support
The Cisco Management Information Base (MIB) list includes Cisco proprietary MIBs and many other Internet Engineering Task Force (IETF) standard MIBs. These standard MIBs are defined in Requests for Comments (RFCs). To find specific MIB information, you must examine the Cisco proprietary MIB structure and related IETF-standard MIBs supported by the Cisco Nexus 3000 Series switch. The MIB Support List is available at the following FTP sites: https://cisco.github.io/cisco-mibs/supportlists/nexus3000/Nexus3000MIBSupportList.html
Optics
To determine which transceivers and cables are supported by Cisco Nexus 3000 Series switches, see the Transceiver Module (TMG) Compatibility Matrix. To see the transceiver specifications and installation information, see Install and Upgrade Guides.
Related Content
This document describes and provides links to the user documentation available for Cisco Nexus 3000 Series documentation. To find a document online, use one of the links in this section.
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Document Title
Description
Cisco Nexus 3000 Series switch documentation
Cisco Nexus 3000 Series documentation
Cisco NX-OS Software Strategy and Lifecycle Guide
Cisco NX-OS Software Release and Image-naming Convention
Cisco Nexus 3000 and 9000 Series NXAPI REST SDK User Cisco Nexus 3000 and 9000 Series NX-API REST SDK User
Guide and API Reference
Guide and API Reference
Cisco NX-OS Licensing Guide
Cisco Nexus 9000 and 3000 Series NX-OS Switch License Navigator
Cisco Nexus Smart Licensing Using Policy User Guide
Licensing Information
Documentation Feedback
To provide technical feedback on this document, or to report an error or omission, please send your comments to nexus9k-docfeedback@cisco.com. We appreciate your feedback.
Legal Information
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: https://www.cisco.com/c/en/us/about/legal/trademarks.html. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1721R)
Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.
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Documents / Resources
 |
CISCO 3000 Series Low Latency Switches [pdf] Instructions 3600, 3500-XL, 3000 Series Low Latency Switches, 3000 Series, Low Latency Switches, Latency Switches, Switches |