Overview
This release for the Catalyst 9600 Series includes software updates in the Cupertino 17.7.x train, focusing on stability, scalability, and reliable campus core operation.
Supported Hardware
This release supports Catalyst 9600 Series chassis, supervisor engines, line cards, power supplies, and fan modules as listed below.
Catalyst 9600 Series SKUs
| Model | Description |
|---|---|
| C9606R | Six-slot chassis designed for high-density campus core deployments |
| C9606 | Six-slot modular chassis for enterprise campus networks |
| C9610R | Ten-slot chassis for large-scale aggregation and core environments |
| C9600-SUP-1 | Supervisor engine providing centralized system control and redundancy |
| C9600-SUP-2 | Enhanced supervisor engine with higher throughput and scalability |
| C9600-LC-48YL | Forty-eight port twenty-five gigabit Ethernet line card |
| C9600-LC-24C | Twenty-four port one hundred gigabit Ethernet line card |
| C9600-PWR-3KW | Three kilowatt AC power supply |
| C9600-PWR-5KW | Five kilowatt AC power supply |
Software Highlights
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Improved system stability during control-plane events
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Enhanced handling of large routing and forwarding tables
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Increased reliability of telemetry and monitoring functions
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Refined software installation and upgrade behavior
Feature Enhancements
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Expanded campus segmentation and policy-based forwarding capabilities
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Improved IPv4 and IPv6 routing scale
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Stability optimizations for high-density uplink configurations
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Enhanced hardware health monitoring and fault detection
Installation and Upgrade Notes
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In-service software upgrade is supported when upgrading from compatible earlier releases
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Configuration backup is strongly recommended prior to upgrade
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A full reload may be required when replacing supervisor hardware
Open and Resolved Issues
Resolved Issues
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Fixed intermittent control-plane synchronization problems
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Addressed forwarding inconsistencies under sustained high traffic
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Improved interface recovery following link interruptions
Open Issues
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Certain diagnostic commands may show delayed output under heavy load
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Interface statistics may temporarily display minor discrepancies
Limitations and Restrictions
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Feature availability depends on installed hardware and license level
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Some functions require aligned configuration across the system
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Mixed supervisor environments must follow compatibility guidelines
Compatibility
This release is designed to interoperate with standard authentication, monitoring, and management platforms when supported software versions are properly aligned.
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