Overview
These release notes describe hardware support, software behavior, and operational constraints for Catalyst 9600 Series switches running IOS XE Bengaluru 17.5.x.
Important Notes
Unsupported Features
This release does not support breakout cables, application visibility, StackWise Virtual, or IPsec VPN functionality.
Hidden Commands
Certain internal commands are available for diagnostic and troubleshooting purposes. These commands are intended for controlled use only.
Supported Hardware
System Chassis
| System Model | Description |
|---|---|
| C9606R | Six-slot modular chassis supporting redundant supervisors, power supplies, and fan trays, designed for core and aggregation deployments. |
Modules and Components
| Product ID | Role | Description |
|---|---|---|
| C9600-SUP-1 | Supervisor module | Provides centralized control, forwarding intelligence, and system management. |
| C9K-F2-SSD-240GB | SSD storage | Two hundred forty gigabyte local storage for supervisor operation. |
| C9K-F2-SSD-480GB | SSD storage | Four hundred eighty gigabyte local storage for supervisor operation. |
| C9K-F2-SSD-960GB | SSD storage | Nine hundred sixty gigabyte local storage for supervisor operation. |
| C9600-LC-48YL | Line card | Forty-eight SFP56 ports supporting fifty, twenty-five, and ten gigabit Ethernet. |
| C9600-LC-24C | Line card | Twenty-four QSFP28 ports supporting one hundred or forty gigabit Ethernet speeds. |
| C9600-PWR-2KWAC | Power supply | Two kilowatt alternating current power module. |
| C9600-PWR-2KWDC | Power supply | Two kilowatt direct current power module. |
Optics Support
Supported optical modules include SFP, SFP+, QSFP+, and QSFP28 form factors. Port speed and reach depend on the installed line card and interface configuration.
UI and System Requirements
Minimum Web UI Requirements
| Component | Requirement |
|---|---|
| Processor | One gigahertz or higher |
| Memory | One gigabyte RAM |
| Display | Minimum resolution of 1280 × 800 |
Supported Browsers
Current versions of Chrome, Edge, Firefox, and Safari are supported for web-based management access.
Licensing
License Levels
-
Network Advantage as the base feature license
-
DNA Advantage as an optional add-on license, dependent on the base license
License Types
Licenses may be permanent, term-based, or evaluation. Evaluation licenses expire automatically and cannot be extended.
Smart Licensing
Licensing is centrally managed, enabling centralized entitlement tracking, flexible activation, and license portability.
Software Images
| Release | Image Type | File Name |
|---|---|---|
| Bengaluru 17.5.1 | Standard | cat9k_iosxe.17.05.01.SPA.bin |
| Bengaluru 17.5.1 | Encrypted | cat9k_iosxeldpe.17.05.01.SPA.bin |
Limitations and Restrictions
-
Management port auto-negotiation limitations
-
Restricted copper support on high-speed interfaces
-
Mixed AC and DC power configurations require careful planning
-
Maximum of twenty concurrent NETCONF sessions
-
Secure Shell version one is not supported; version two is recommended
-
Web UI supports configuration of data VLANs only
Known Conditions
This release includes open conditions related to system initialization, supervisor switchover behavior, and specific interface operations. Resolved conditions from earlier releases are documented separately.
Compatibility
Compatibility with external management, monitoring, and authentication systems depends on aligned software versions and supported features.
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