Cisco 2504 vs 3504 Wireless Controller
The 2504 is an end-of-life AireOS controller; the 3504 is its direct AireOS successor with double the AP and client scale, 10G uplinks and Wave 2 support. Both are now legacy versus Catalyst 9800, but between these two the 3504 is the upgrade.
Cisco 2504 Wireless Controller
Entry-level AireOS controller for small offices, scaling up to 75 access points over 1G copper ports.
- Up to 75 access points and 1,000 clients
- Four 1G copper ports (PoE-capable on two)
- 1 Gbps throughput, no internal redundancy
- End-of-sale and end-of-support; AireOS only
Cisco 3504 Wireless Controller
Compact AireOS controller for small to midsize sites, doubling AP scale with 10G uplinks and Wave 2 support.
- Up to 150 access points and 3,000 clients
- Two 10G SFP+ uplink ports
- 4 Gbps throughput with N+1 and SSO HA options
- 802.11ac Wave 2 support; supports Mobility Express
Cisco 2504 Wireless Controller vs Cisco 3504 Wireless Controller: spec comparison
| Spec | Cisco 2504 Wireless Controller | Cisco 3504 Wireless Controller |
|---|---|---|
| Max access points | 75 | 150 |
| Max clients | 1,000 | 3,000 |
| Throughput | 1 Gbps | 4 Gbps |
| Uplink ports | 4x 1G copper | 2x 10G SFP+ |
| Form factor | Desktop / 1RU | 1RU |
| Software | AireOS | AireOS |
| High availability | N+1 only | N+1 and SSO/stateful HA |
| Wi-Fi standard support | Up to 802.11ac Wave 1 | Up to 802.11ac Wave 2 |
| Mobility Express | No | Yes |
| Lifecycle status | End-of-sale / EoL | End-of-sale (final AireOS gen) |
Choose Cisco 2504 Wireless Controller if
There is no strong reason to choose a new 2504 today; only keep an installed unit running short term in a very small site with fewer than 75 APs while you plan a migration.
Choose Cisco 3504 Wireless Controller if
Choose the 3504 over the 2504 when you need more than 75 APs, 10G uplinks, Wave 2 support or stateful HA, but evaluate Catalyst 9800-L if you want a controller with a longer support runway.
Verdict
Between these two, the 3504 doubles AP and client capacity, adds 10G uplinks, Wave 2 and stateful HA, making it the clear upgrade from the 2504. That said, both are AireOS and end-of-sale, so for a forward-looking refresh consider jumping straight to a Catalyst 9800 controller.
Frequently asked questions
What is the difference between the Cisco 2504 and 3504 wireless controllers?
The 3504 supports 150 APs and 3,000 clients with 10G uplinks and 4 Gbps throughput, while the 2504 tops out at 75 APs, 1,000 clients, 1G copper ports and 1 Gbps throughput.
Is the Cisco 2504 wireless controller end of life?
Yes. The 2504 has passed end-of-sale and end-of-support milestones; the 3504 was its AireOS replacement, and Catalyst 9800 is the current IOS XE platform.
Does the 3504 support 802.11ac Wave 2 access points?
Yes. The 3504 supports Wave 2 APs and Mobility Express deployments, while the older 2504 is limited to earlier AP generations.
Should I buy a 3504 or move to Catalyst 9800?
If you must stay on AireOS, the 3504 is the better of the two. For a longer support runway and modern IOS XE features, the Catalyst 9800-L is the more future-proof choice.
More Wireless LAN Controller comparisons
Specs are for planning and may change; Uniqcli confirms the current Cisco bill of materials and pricing on your quote. Cisco, Catalyst, Nexus, Meraki, and Firepower are trademarks of Cisco Systems, Inc.; Uniqcli LLC is an independent authorized Cisco partner.