Cisco Nexus Hyperfabric Release Notes, 2026
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Cisco Nexus Hyperfabric enables customers easily to design, deploy, and scale any number of data center fabrics located anywhere. Delivered as a fabric-as-a-service solution, it reinvents and simplifies every step of IT operations, ensuring repeatable and predictable outcomes.
Note
Software version 20250320 had its end of support on October 15, 2025. If any devices in a fabric are running this version, in the Cisco Nexus Hyperfabric GUI, you will see a banner with text similar to this example:
Fabric1 device software approaching targeted end of support
You have less than one month to upgrade your devices to a newer version go to software management.
Fabric1 is the name of your fabric. You must upgrade the software of the devices to a supported version.
Cisco Nexus Hyperfabric is a data center fabric-as-a-service solution that consists of two components:
● Cloud controller—A scalable, globally distributed multitenant cloud service that is used to design, plan, control, upgrade, and monitor fabrics using a browser or APIs.
● Cisco 6000 series switches—Installed with Cisco Nexus Hyperfabric–managed software, the 6000 series switches connect to the cloud for centralized real-time visibility and control.
This document describes the features, issues, and scale limits for Cisco Nexus Hyperfabric.
New features in January 2026
Table 1. New hardware and software features for Nexus Hyperfabric in January 2026
| Feature |
Description |
| BGP peering from host interfaces |
Establish BGP sessions between the fabric and devices within a data center's logical network subnet. This ensures routing stability and continuous connectivity even when workloads migrate to different physical hosts. For more information, see Cisco Nexus Hyperfabric — Configure BGP. |
| Splunk webhook endpoints |
You can integrate Splunk with Cisco Nexus Hyperfabric to export actionable alerts. This feature allows you to send assertion details directly to your Splunk environment using an HTTP Event Collector (HEC). Each notification includes a timestamp, criticality level, and a breadcrumb link back to the associated fabric blueprint. For more information, see Cisco Nexus Hyperfabric — Notifications. |
| Import the same fabric blueprint into organization and cloning a fabric blueprint |
You can now import a fabric blueprint into an organization that already has that fabric blueprint, but you must give the imported blueprint a new name. You can also clone a fabric blueprint to create a duplicate in the organization, but you also must give the clone a new name. For more information, see Cisco Nexus Hyperfabric — Configure Fabrics. |
| Removal of the "classic" fabric mode |
The "Classic" fabric mode has been removed. There is now only one fabric mode, which does not have a special label in the GUI. Nexus Hyperfabric automatically migrates all classic fabrics to the one (and only) fabric mode. |
This table shows which SONiC software release added support for the specified Cisco Nexus Hyperfabric features.
Table 2. Features supported by SONiC
| SONiC release |
Supported Cisco Nexus Hyperfabric features |
| 20260109 |
BGP peering from host interfaces |
Resolved issues
To see additional information about the caveats, click the bug ID to access the Bug Search Tool (BST).
Table 3. Resolved issues for Nexus Hyperfabric in January 2026
| Bug ID |
Description |
| In HF6100 switches running the Hyperfabric OS and managed by Nexus Hyperfabric, under rare conditions ARP can fail to synchronize across VTEPs for ESI port channels, leading to traffic getting dropped. |
To see additional information about the caveats, click the bug ID to access the Bug Search Tool (BST).
Table 4. Open issues for Nexus Hyperfabric in January 2026
| Bug ID |
Description |
| N/A |
There are no open issues for this month. |
Table 5. Verified scalability limits for Nexus Hyperfabric
| Feature |
Scale limits |
| Topology per fabric |
● Switches: 64
● Servers: 64
|
| Port configuration |
● Port channels per fabric: 50
● Physical ports per port channel: 4
● Breakout-enabled ports per switch: 32
● Routed sub-interfaces per physical port: 100
|
| Layer 2 scale per fabric |
● VLANs: 256
● PVST+ instances: 256
● MAC, IPv4/MAC, and IPv6/MAC endpoints (EVPN type-2 routes): 15,000
|
| IP scale per fabric |
● VRF instances: 10
● SVIs: 256
● IPv4 routes: 50,000
● IPv6 routes: 5,000
● IPv4+IPv6 routes: 55,000
● ECMP paths: 4
● Static routes: 1,000
● External BGP sessions: 20 peers per switch
◦ These are external and do not reflect the underlay BGP sessions.
● BGP import and export policies: 10
● DHCP relay VLANs: 32
|
You can access the Cisco Nexus Hyperfabric documentation from the following website:
https://www.cisco.com/c/en/us/support/data-center-networking/nexus-hyperfabric/series.html
| Document |
Description |
| Cisco Nexus Hyperfabric Release Notes |
This document. |
| Describes how to deploy Nexus Hyperfabric. |
|
| Describes the various Nexus Hyperfabric features and use cases. |
|
| Lists the licenses and notices for open source software used in this product. |
To provide technical feedback on this document, or to report an error or omission, send your comments to ciscohyperfabric-docfeedback@cisco.com.
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