Cisco Nexus 9000 Series NX-OS Release Notes, Release 10.6(1s)F
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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.
This document provides information about the features, networking mode capabilities of the N9300 Smart Switch, and relevant documentation for Cisco NX-OS Release 10.6(1s) on the Cisco N9300 Series.
| Date |
Description |
| September 15, 2025 |
Release 10.6(1s) became available. |
Cisco N9300 Series Smart Switches
The Cisco N9300 Series Smart Switches are integrated network devices designed for scalable, secure, and efficient data center operations. They combine advanced networking and security features with hardware acceleration and software flexibility, embedding stateful security powered by Cisco Hypershield directly into the network fabric.
Cisco N9300 Series Smart Switches utilize Cisco® Silicon One® E100 ASIC for high-performance switching and DPUs for enhanced security and services. The family includes 100G and 25G switches with 800G DPU acceleration. Models such as the Cisco Nexus N9348Y2C6D-SE1U and N9324C-SE1U offer exceptional flexibility and performance, making them ideal Top of Rack (ToR) solutions for VXLAN-EVPN, BGP fabrics, and Multisite deployments. These switches can be deployed as leaf switches, border leaf, or border gateways, enabling customers to build adaptable and high-performing data center architectures.
The Cisco N9300 Series Smart Switches offer converged switching and routing services.
For product specifications, see Cisco N9300 Series Smart Switch Data Sheet.
Cisco N9324C-SE1U switch
Starting with Cisco NX-OS Release 10.6(1s), the N9300 Series Smart Switches introduces the Cisco N9324C-SE1U switch, a 1-RU solution designed to deliver high-performance networking capabilities. Its features include:
● 24 x 100G ports
● Cisco Silicon One E100 ASIC offering high-speed connectivity and scalability
● Top of Rack (ToR) solutions for VXLAN-EVPN, BGP fabrics, and Multisite deployments
● 4 DPU offering software-defined stateful services
For hardware details, see Cisco N9324C-SE1U NX-OS-Mode Switch Hardware Installation Guide.
Cisco N9348Y2C6D-SE1U switch
Starting with Cisco NX-OS Release 10.6(1s), the N9300 Series Smart Switches introduces the Cisco N9348Y2C6D-SE1U switch, a 1-RU solution designed to deliver high-performance. It features include:
● 48-port 25G + 2-port 100G + 6-port 400G switch
● Cisco Silicon One E100 ASIC offering high-speed connectivity and scalability
● Top of Rack (ToR) solutions for VXLAN-EVPN, BGP fabrics, and Multisite deployments
● 2 DPUs offering software-defined stateful services
For hardware details, see Cisco N9348Y2C6D-SE1U switch Hardware Installation Guide.
Software Features
Guides listed in the below table contains contents specific only to Cisco NX-OS Release 10.6(1s).
| Feature Type |
Description |
| Network Interfaces and Speeds |
●
Cisco N9324C-SE1U switch
o
Port Speed: 40G, 100G
o Breakout: 4 x10G, 4 x 25G, 2 x 50G
●
Cisco N9348Y2C6D-SE1U switch
o
Port Speed: 10G, 25G, 40G, 100G, 400G
o
Breakout: 4 x10G, 4 x 25G, 2 x 50G, 4 x 100G
● L3 routed, routed sub (native and PC)
● SVI support
● VLAN, access, trunk
For information on port speed and breakout, see
Port peed and breakout modes.
|
| L2 |
● DHCP relay
● QinQ
● SVI support
● UDLD
● Port channels (PC), vPC
● ICAM
● RSTP. MSTP
● LACP, LLDP
|
| Unicast Routing/ L3 (IPv4 and IPv6) |
● BGP, OSPF, EIGRP, ISIS, BFD (Single Hop), VRF, RIP
● ECMP
● 8192 ECMP groups, 512-way ECMP
● IP directed broadcast
● uRPF
● Static routing
● HSRP, VRRP
● IP unnumbered (non-SVI)
|
| Multicast
|
● L2/L3 IPv4 multicast PIM (ASM, SSM)
● L3-Phy, PO, SI, SVI, vPC
● L2-PO
● IGMP snooping
● Flow path visibility
● Multicast route-aliveness
● Hitbit, route statistics (pkts, bytes)
|
| MPLS/SR
|
● SR-MPLS underlay
● SR-MPLS L3EVPN
|
| Quality of Service
|
● Classification and marking
● Queuing and scheduling
● CoPP, custom CoPP
|
| Network Security |
● AAA, RADIUS, TACACS+
● Ingress PACL
● Ingress and egress RACL (IPV4/V6)
● SSH protocol version 2
● SNMPv3
● PBR
● MACsec
|
| Telemetry and Monitoring |
● SNMPv2
● Software Telemetry
◦ DME data collection ◦ NX-API data sources ◦ Google protocol buffer (GPB) encoding over Google ◦ JSON encoding over HTTP
● sFlow
● gNMI support
● SPAN, SPAN on drop, ERSPAN
|
| VXLAN |
● VXLAN EVPN v4/v6
● Multicast/IR
● TRMv4
● DSVNI
● Multi-Site Anycast border gateway
● vPC and vPC fabric peering
● NGOAM
● L3 physical port and L3PO as fabric uplinks
● IGMP snooping with or without TRMv4
|
| IPFM |
● NBM Use cases
● Policer Scale
|
| Programmability |
● Open NX-OS automation
● Open and native YANG models
◦ NETCONF, RESTCONF, gNMI
●
TCL
|
| Upgrade |
● POAP
● GIR
● Disruptive ISSU
|
| Licensing |
● Premier, Advantage and Essentials License for appropriate features
|
Release Image
Note: Starting from 10.5(3)F, Cisco NX-OS no longer provides a separate EPLD image. Instead, the EPLD image is bundled with all NX-OS images and so the image sizes are correspondingly larger.
In Cisco NX-OS Release 10.6(1s), the following 64-bit image is supported:
● The 64-bit Cisco NX-OS image filename with “nxos64-s1-dpu” as the prefix (for example, nxos64-s1-dpu.10.6.1s.F.bin) is supported and it is mandatory on Cisco N9300 Series Smart Switches.
Note: The 32-bit image is no longer supported.
Click the bug ID to access the Bug Search Tool and see additional information about the bug.
| Bug ID |
Headline |
| Configure Replace Command Fails with Syntax Error When Changing VLAN on Access Interface |
|
| 100G speed change/100G breakout post link up requires device reload |
Resolved Issues
There are no resolved issues in this release.
Device Hardware
The following table list the Cisco Nexus 9300 Series hardware that Cisco NX-OS Release 10.6(1s) supports. For additional information about the supported hardware, see the Hardware Installation Guide for your Cisco Nexus 9000 Series device.
Table 1. Cisco N9300 Series Smart Switches
| Product ID |
Description |
| N9348Y2C6D-SE1U |
1-RU switch with 48 x 25G, 6 x 400G, 2 x 100G ports, Cisco Silicon One E100 ASIC and 2 DPUs |
| N9324C-SE1U |
1-RU switch with 24 x 100G ports, Cisco Silicon One E100 ASIC and 4 DPUs |
For information about transceivers and cables supported on a switch, see the Transceiver Module (TMG) Compatibility Matrix. For the transceiver specifications and installation information, see the Install and Upgrade Guides.
To perform a software upgrade or downgrade, follow the instructions in the Cisco Nexus 9000 Series NX-OS Software Upgrade and Downgrade Guide, Release 10.6(x).x
Note: Only Disruptive Upgrade is supported. See Disruptive Upgrade.
Note: Upgrading the Cisco N9324C-SE1U switch from NX-OS Release 10.5(3s) to NX-OS Release 10.6.1 is not recommended if the service-acceleration feature is in use. This feature is not supported in NX-OS Release 10.6.1.
| Document Title |
Description |
| Cisco Nexus 9000 Series Switches documentation |
|
| Cisco NX-OS Software Release and Image-naming Convention |
|
| Data sheet for Cisco N9300 Series Smart Switch |
|
| Cisco Nexus 9000 and 3000 Series NX-OS Switch License Navigator |
Licensing Information Note: When you downgrade from Cisco NX-OS Release 10.6(1s) to an earlier release, the features that use the ACI+NX-OS Essentials, Advantage, and add-on licenses or the Hardware Streaming Telemetry license continue to work in honor mode in the downgraded version. In addition, the output of the show license usage command continues to include entries for these unsupported licenses. |
| Cisco Nexus 9000 Series NX-OS Software Upgrade and Downgrade Guide |
Cisco Nexus 9000 Series Software Upgrade and Downgrade Guide, Release 10.6(x) |
| Cisco N9324C-SE1U NX-OS-Mode Switch Hardware Installation Guide |
Cisco Nexus 9324C-SE1U NX-OS-Mode Switch Hardware Installation Guide |
| Cisco Nexus N9348Y2C6D-SE1U NX-OS-Mode Switch Hardware Installation Guide |
Cisco Nexus N9348Y2C6D-SE1U NX-OS-Mode Switch Hardware Installation Guide |
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.
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