• Cisco Catalyst 9800-40 Wireless Controller with ports and silver finish
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Cisco C9800-40-CA-K9 | Catalyst 9800-40 Wireless Controller, 40Gbps, 2000 APs

C9800-40-CA-K9

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Description

The Cisco Catalyst 9800-40 Wireless Controller delivers enterprise-grade WLAN management for midsize to large deployments, supporting up to 2000 access points and 32,000 clients with 40 Gbps centralized throughput. Built on Cisco IOS XE with intent-based networking capabilities, it provides seamless software updates, high availability with SSO redundancy, and integrated security features including Encrypted Traffic Analytics and SD-Access. Ideal for campus networks, hotels, dormitories, and multi-building environments requiring centralized wireless control with advanced policy segmentation and analytics.

Features

Up to 40 Gbps centralized wireless throughput
- Supports up to 2000 access points and 32,000 concurrent clients
- 4x 10 Gigabit Ethernet SFP+ ports (1G/10G capable)
- Cisco IOS XE operating system with open APIs and model-driven telemetry
- Stateful Switchover (SSO) for seamless high availability and zero-downtime upgrades
- Hot and cold patching for continuous operation during maintenance
- Wi-Fi 6 (802.11ax) ready with full Wi-Fi 5 (802.11ac Wave 2) support
- CAPWAP and DTLS encryption for secure AP communication
- RAID 1 resilient storage for controller configuration and logs
- Encrypted Traffic Analytics (ETA) for threat detection without decryption
- Software-Defined Access (SD-Access) integration for policy segmentation
- Advanced Wireless Intrusion Prevention System (aWIPS)
- Secure Boot, image signing, and hardware authenticity verification
- Supports up to 4096 WLANs for multi-tenant and large-scale deployments
- VLAN support, 802.1Q tagging, and 802.1AX link aggregation
- IPv6 support and dual-stack operation
- Cisco DNA Center integration for intent-based management and AI-driven analytics
- User Defined Network (UDN) for guest and BYOD segmentation
- Dual hot-swappable AC power supplies for redundancy
- 1RU compact form factor with front-to-rear cooling

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Datasheet

Technical Specifications

Maximum Access Points: Up to 2000
- Maximum Clients: 32,000
- Throughput: 40 Gbps centralized forwarding
- Data Ports: 4x 10GbE SFP+ (1G/10G capable)
- Maximum WLANs: 4096
- Memory: Up to 32 GB DDR3 ECC
- Storage: RAID 1 resilient storage
- Management Interfaces: 1x Gigabit RJ45, Console, USB
- Operating System: Cisco IOS XE
- High Availability: SSO (Stateful Switchover) support
- Form Factor: 1RU rack-mountable
- Dimensions (H x W x D): 1.7 x 17.3 x 19.5 inches (43.2 x 439.4 x 495.3 mm)
- Weight: Approximately 20 lb (9 kg)
- Power: Dual hot-swappable AC power supplies, redundant configuration
- Cooling: Front-to-rear airflow, 6 internal fans
- Standards Compliance: IEEE 802.11a/b/g/n/ac/ax (Wi-Fi 6), 802.3, 802.1Q VLAN, 802.1AX Link Aggregation

FAQs

Q: What is the difference between the C9800-40-K9 and C9800-40-CA-K9 SKUs?
A: The C9800-40-CA-K9 is the Canada-specific SKU with regional AC power specifications and regulatory compliance. Both models share identical hardware capabilities: 40 Gbps throughput, support for 2000 APs and 32,000 clients, 4x 10GbE SFP+ ports, and RAID 1 storage with SSO high availability.

Q: Can the Catalyst 9800-40 manage Wi-Fi 6 access points?
A: Yes, the Catalyst 9800-40 fully supports Wi-Fi 6 (802.11ax) access points, including Catalyst 9100 and Aironet Wi-Fi 6 models. It provides Wi-Fi 6 readiness dashboards in Cisco DNA Center to assess compatibility and performance gains across your wireless deployment.

Q: How does high availability work with the 9800-40 controller?
A: The 9800-40 supports Stateful Switchover (SSO) redundancy when paired with a second controller. During failover or upgrades, client sessions are preserved without disconnection. Internal redundancy is provided by dual hot-swappable AC power supplies and RAID 1 storage.

Q: What licensing is required for the Catalyst 9800-40?
A: The 9800-40 requires Cisco DNA software licenses per access point. Common tiers include DNA Essentials (basic management and security) and DNA Advantage (adds advanced analytics, AI-driven insights, and SD-Access integration). Licenses are managed via Cisco DNA Center or the Smart Licensing portal.

Q: Can the 9800-40 integrate with existing Cisco wireless infrastructure?
A: Yes, the 9800-40 integrates seamlessly with Cisco Aironet and Catalyst access points via CAPWAP protocol. It supports centralized management through Cisco DNA Center, Prime Infrastructure, or CLI/web GUI, enabling smooth migration from older controllers like the 3504, 5520, or 8540 Series.

Datasheet

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