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Core Functionality and Technical Specifications
The C9400-SUP-1= is a Supervisor Engine for Cisco Catalyst 9400 Series modular switches, acting as the control plane for chassis operations. It supports Cisco IOS XE 17.6.1 or later, enabling advanced features like SD-Access, Encrypted Traffic Analytics (ETA), and automated QoS policies. With a dual-core CPU and 8GB memory, it manages up to 7.6 Tbps system throughput, ensuring seamless coordination of line cards and network services.
Key capabilities:
- Dual supervisor redundancy: Supports Stateful Switchover (SSO) for <50ms failover during outages.
- Unified management: Integrates with Cisco DNA Center for centralized policy enforcement.
- Modular scalability: Compatible with all Catalyst 9400 chassis (9407R, 9410R, 9404R).
Addressing Critical User Questions
Q: Is the C9400-SUP-1= compatible with older Catalyst 9400 line cards?
A: Yes. It works with all existing line cards (e.g., C9400-LC-48TX=, C9400-LC-24XS=) but requires Cisco IOS XE 17.6.1 or newer to unlock full functionality like SD-Access or ETA.
Q: How does redundancy work with dual supervisors?
A: Deploying two C9400-SUP-1= modules in a chassis enables SSO, where the standby supervisor syncs runtime states (ARP tables, MAC addresses) with the active module. During failures, traffic reroutes within milliseconds without dropping sessions.
Q: What licensing is required?
A: The Network Advantage license (included) covers base Layer 3 features. For DNA Center integration, a DNA Premier subscription is required, which includes software updates and threat analytics.
C9400-SUP-1= vs. C9400-SUP-1XL: Strategic Differences
| Feature | C9400-SUP-1= | C9400-SUP-1XL |
|---|---|---|
| CPU/Memory | Dual-core, 8GB RAM | Quad-core, 16GB RAM |
| Max Throughput | 7.6 Tbps | 12.8 Tbps |
| Telemetry Support | Basic NetFlow | Advanced Model-Driven Telemetry |
| Target Use Case | Mid-sized campus cores | Large-scale data centers |
For most enterprises, the C9400-SUP-1= strikes a balance between cost and performance, while the SUP-1XL suits hyperscale environments.
Procurement and Operational Insights
The “C9400-SUP-1=” is available through itmall.sale, offering genuine Cisco hardware with full lifecycle support.
Deployment experience: In a regional hospital network, deploying dual C9400-SUP-1= modules eliminated downtime during critical system updates. However, the 8GB memory limit occasionally strained during simultaneous SD-Access and ETA operations. For organizations planning AI-driven network analytics, upgrading to the SUP-1XL might be prudent. That said, for typical campus deployments, this supervisor delivers reliable, future-ready performance without overprovisioning costs.