Home / Shop
- Description
- Specifications
The Catalyst 9800-40 is Cisco's fixed 1RU wireless LAN controller for midsize and large enterprises, running Cisco IOS XE. Cisco rates it for up to 2,000 access points, 32,000 clients and 40 Gbps of throughput, with up to 4,096 WLANs and 4,096 VLANs. It supports centralized, FlexConnect and SD-Access fabric deployment modes, and manages Aironet 802.11ac Wave 1 and Wave 2 and Catalyst 9100 Wi-Fi 6 access points.
Uplinks are four 10G/1G SFP+/SFP ports. It ships with AC power and takes an optional redundant AC supply, with a worldwide 90 to 264 VAC input range and 381 W maximum consumption; the C9800-AC-750W-R= is the 750 W spare. The chassis measures 17.3 x 19.5 x 1.72 in and weighs 22.8 lb. High availability includes stateful switchover with 1:1 active-standby and N+1 redundancy. Minimum software is IOS XE 16.10.1.
The C9800-80 is the larger controller in the same end-of-sale notice.
Lifecycle: Cisco's amended end-of-sale notice for the C9800-40 and -80 set the last order date at December 31, 2025 and the last date of support at December 31, 2030. Cisco names the Catalyst CW9800M as the replacement for the C9800-40-K9.
More from this family: Cisco Wireless.
Related parts: C9120AXI-B, CW9166I-MR.
| C9800-40-K9 Specs | |
| Part number | C9800-40-K9 |
| Type | Catalyst 9800 wireless LAN controller, 1RU |
| Access points | Up to 2,000 |
| Clients | Up to 32,000 |
| Throughput | Up to 40 Gbps |
| WLANs / VLANs | 4,096 / 4,096 |
| Interfaces | 4 x 10G/1G SFP+/SFP |
| Power | AC, optional redundant AC (C9800-AC-750W-R=); 381 W max |
| High availability | SSO 1:1 active-standby, N+1 |
| Software | Cisco IOS XE 16.10.1 or later |
| Dimensions / weight | 17.3 x 19.5 x 1.72 in, 22.8 lb |
| End of sale / last support | Dec 31, 2025 / Dec 31, 2030 |
| Replacement | CW9800M |