REST API Limitations: Configuring VPC Domains
REST API Limitations: Configuring VPC Domains In the r...
What Is the Cisco C9K-MEM-16GB=?
The Cisco C9K-MEM-16GB= is a 16GB DDR4 memory module designed for Catalyst 9000 Series switches, including the Catalyst 9300, 9400, and 9500 models. As detailed on Cisco.com, this module expands the switch’s control-plane memory, enabling advanced features like granular telemetry, encrypted traffic analytics, and large-scale policy enforcement without compromising forwarding performance.
Key Technical Specifications
- Capacity: 16GB DDR4-2400 MT/s memory, optimized for high-throughput control-plane operations.
- Compatibility: Supported on Catalyst 9200/9300/9400/9500/9600 switches with available memory slots.
- Latency: Operates at CL17 (CAS Latency 17), balancing speed and stability for real-time processing.
- Cisco Validated: Tested for thermal resilience (0°C to 40°C) and vibration resistance in enterprise racks.
Addressing Core User Concerns
Q: Why upgrade from the default 8GB module?
The 16GB module doubles available memory, allowing Cisco IOS XE to handle complex tasks like SD-Access segmentation, NetFlow collection, and AI-driven threat detection simultaneously. Cisco.com notes that 8GB modules may bottleneck networks with >10,000 ACLs or >500 VLANs.
Q: Is it compatible with older Catalyst 3850/4500 switches?
No. The C9K-MEM-16GB= is exclusive to Catalyst 9000 platforms, which use a different memory architecture.
Q: Can it be installed without downtime?
Yes. The module supports hot-swapping in dual-supervisor Catalyst 9400/9500 chassis, ensuring zero service disruption. For fixed switches like the 9300, a brief reboot is required.
Deployment Scenarios
- High-Security Campuses: Enables Cisco TrustSec and MACsec encryption at scale without memory exhaustion.
- AI-Driven Networks: Supports Cisco DNA Analytics for predictive issue resolution in large retail or healthcare environments.
- Service Provider Edges: Manages BGP/OSPF tables with >1 million routes, critical for 5G backhaul or ISP edge nodes.
Procurement and Installation
The “C9K-MEM-16GB=” is available through ITMall.sale, with discounts for bulk Catalyst 9000 upgrades. Cisco.com recommends verifying switch compatibility via the Cisco Feature Navigator tool before purchase.
Final Perspective
In an era where network complexity grows exponentially, the C9K-MEM-16GB= isn’t a luxury—it’s insurance against obsolescence. Skimping on memory forces admins to choose between security, visibility, or scale—a compromise no modern enterprise should accept. For teams future-proofing their infrastructure, this module is the silent enabler of next-gen networking.