C9115AXI-S – Wi-Fi 6 4×4:4 AP – Internal Antennas – 2.5G PoE Uplink

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C9115AXI-S Description

The C9115AXI-S is a Cisco Catalyst 9115AX Series indoor Wi-Fi 6 access point with integrated antennas for controller-managed branch and campus rooms in the S regulatory domain. The access point has dual 2.4 GHz and 5 GHz radios with 4x4 MIMO and four spatial streams, antenna gain of 3 dBi on 2.4 GHz and 4 dBi on 5 GHz, and a 100/1000/2500 Multigigabit Ethernet uplink. Full 4x4 operation needs 802.3at power at 20.4W, while 802.3af at 13W limits it to 2x2 radios and a 1G link.

Quick Specs

Parameter

Specification

Product ID

C9115AXI-S

Product type

Indoor Wi-Fi 6 wireless access point

Access point series

C9115AXI-S Catalyst 9115AX Series

Ordering pattern

C9115AXI-x with x as the regulatory-domain suffix

Management model

Controller-based access point

Software support

Cisco Unified Wireless Network Software Release 8.9 or later and Cisco IOS XE Software Release 16.11 or later

Supported controllers

Cisco Catalyst 9800 Series, Cisco 3500, 5520, 8540, and Virtual Wireless Controller

Wireless standard

Wi-Fi 6 / IEEE 802.11ax

Radio and MIMO profile

Dual-band 2.4 GHz and 5 GHz radios with 4×4 MIMO and four spatial streams

Antenna design

Four integrated dual-band internal antennas on C9115AXI models

Ethernet interfaces

1 x 100/1000/2500 Multigigabit Ethernet RJ-45, RJ-45 console, and USB 2.0

PoE feature mode

802.3at supports 4×4 radios, 2.5G link, USB, and 20.4W max PoE draw; 802.3af reduces radios to 2×2, link to 1G, disables USB, and lists 13W max PoE draw

Radio Design

Dedicated 2.4 GHz radio and 5 GHz radio

Application Scenarios

Branch Office Ceiling Coverage

A branch office with a single wiring closet can cover its floor with ceiling-mounted access points whose internal antennas need no separate antenna planning.

Hotel Guest Floors

Along guest-room corridors, the AP provides dual-band Wi-Fi 6 coverage and uplinks to the floor switch at up to 2.5G.

Library And Study Spaces

In a campus library, the AP’s four spatial streams serve many laptops and phones at once, and a supported Catalyst 9800 controller manages its configuration.

Product Comparison

Parameter

C9115AXI-S

C9115AXE-S

C9115AXI-R

Regulatory domain

S

S

R

Wi-Fi standard

IEEE 802.11ax (Wi-Fi 6)

IEEE 802.11ax (Wi-Fi 6)

IEEE 802.11ax (Wi-Fi 6)

Spatial streams

4×4 MIMO, four spatial streams

4×4 MIMO, four spatial streams

4×4 MIMO, four spatial streams

Antennas

Four integrated dual-band antennas

Four RP-TNC connectors for external dual-band antennas

Four integrated dual-band antennas

Antenna gain

3 dBi (2.4 GHz), 4 dBi (5 GHz)

External antennas up to 6 dBi (2.4 GHz and 5 GHz)

3 dBi (2.4 GHz), 4 dBi (5 GHz)

Interfaces

1 x 100/1000/2500 Multigigabit Ethernet

1 x 100/1000/2500 Multigigabit Ethernet

1 x 100/1000/2500 Multigigabit Ethernet

Maximum PoE draw (802.3at)

20.4W

21.4W

20.4W

Weight

1.98 lb

2.43 lb

1.98 lb

C9115AXI-S and C9115AXE-S share the -S regulatory suffix, 4×4 MIMO and the 2.5G Multigigabit uplink, but C9115AXI-S has four integrated dual-band antennas (3 dBi on 2.4 GHz, 4 dBi on 5 GHz) while C9115AXE-S has four RP-TNC connectors certified for external antennas up to 6 dBi. Sites whose RF plan needs directional or higher-gain antennas should order C9115AXE-S, which also draws 21.4W at 802.3at against 20.4W and weighs 2.43 lb against 1.98 lb. C9115AXI-R is the same internal-antenna body with the -R suffix, so it replaces C9115AXI-S only when the installation country maps to the R domain; the table lists no other difference between the two.

Ordering Checklist

  • Controller model: If C9115AXI-S joins a CW9800 controller, pick CW9800L, CW9800M, CW9800H1 or CW9800H2 and run IOS XE 17.14.1 or later (17.18.2 or later on CW9800L). CW9800L needs a higher IOS XE release than CW9800M, CW9800H1 and CW9800H2.
  • AP subscription: Order one Cisco DNA subscription or Cisco Networking Subscription (LIC-CW-E Essentials or LIC-CW-A Advantage) for each AP; the unified LIC-CW SKUs need IOS-XE 17.15.x or later. The CW9800 controller boots without a license, but every AP it manages needs its own subscription.

Specifications

Parameter Specification Parameter Specification
Product ID C9115AXI-S Product Type Indoor Wi-Fi 6 wireless access point
Access point series C9115AXI-S Catalyst 9115AX Series Ordering Pattern C9115AXI-x with x as regulatory-domain suffix
Management Model Controller-based access point Software Support Cisco Unified Wireless Network Software Release 8.9 or later; Cisco IOS XE Software Release 16.11 or later
Supported Controllers Cisco Catalyst 9800 Series, Cisco 3500, 5520, 8540, and Virtual Wireless Controller Wireless Standard Wi-Fi 6 / IEEE 802.11ax
Radio Design Dedicated 2.4 GHz radio and 5 GHz radio MIMO Profile 4×4 MIMO with four spatial streams on both bands
Internal Antennas Four integrated dual-band antennas on C9115AXI models 2.4 GHz Antenna Gain 3 dBi peak gain for integrated internal antennas
5 GHz Antenna Gain 4 dBi peak gain for integrated internal antennas Ethernet Uplink 1 x 100/1000/2500 Multigigabit Ethernet RJ-45
Console Port RJ-45 management console port USB Port USB 2.0
Status Indicator Multi-color status LED PoE Input Options 802.3at PoE+, 802.3bt Cisco UPOE, AIR-PWRINJ6=, 802.3af PoE, or AIR-PWRINJ5=
802.3at Feature Mode 4×4 radios, 2.5G link speed, USB enabled, and 20.4W max PoE consumption for Catalyst 9115I 802.3af Feature Mode 2×2 radios, 1G link speed, USB disabled, and 13W max PoE consumption
Power Negotiation Note LLDP/CDP should be enabled for proper power negotiation Dimensions 8.0 x 8.0 x 1.5 in. (20.3 x 20.3 x 3.8 cm)
Weight 1.98 lb. (0.9 kg) Operating Temperature 32 to 122 F (0 to 50 C)
Operating Humidity 10% to 90% noncondensing Storage Temperature -22 to 158 F (-30 to 70 C)
Operating Altitude Test 40 C at 9843 ft. Environmental Feature Shift Above 40 C ambient, radios shift from 4×4 to 2×2, Ethernet downgrades to 1G, and USB is disabled
System Memory 2048 MB DRAM and 1024 MB flash Mounting Bracket Options AIR-AP-BRACKET-1 low-profile bracket or AIR-AP-BRACKET-2 universal bracket

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Questions & Answers

  • How is C9115AXI-S classified?

    C9115AXI-S is an indoor controller-based Wi-Fi 6 access point in the Catalyst 9115AX Series. It uses the AXI internal-antenna body and carries the S regulatory-domain suffix.
  • Which radio and antenna profile does C9115AXI-S use?

    C9115AXI-S uses dedicated 2.4 GHz and 5 GHz radios with 4x4 MIMO and four spatial streams. Its four integrated dual-band internal antennas require no external RP-TNC antenna plan.
  • Does C9115AXI-S retain a 2.5G link on 802.3af?

    No, C9115AXI-S drops to a 1G link, 2x2 radios, and disabled USB when powered by 802.3af. A full 2.5G link with 4x4 radios and USB requires 802.3at power.
  • Which software releases support C9115AXI-S?

    C9115AXI-S supports Cisco Unified Wireless Network Software Release 8.9 or later and Cisco IOS XE Software Release 16.11 or later. Its controller environment must meet one of those baselines.
  • How does C9115AXI-S compare with C9115AXE-S?

    C9115AXI-S integrates its antennas, while C9115AXE-S uses four RP-TNC connectors for approved external antennas. Both are Wi-Fi 6 access points in the S regulatory domain with 4x4 MIMO and four spatial streams.
  • Which controller families work with C9115AXI-S?

    C9115AXI-S works with Cisco Catalyst 9800 Series, Cisco 3500, 5520, 8540, and Virtual Wireless Controller. Controller release support must be verified with the target software path.
  • What mounting brackets can be used with C9115AXI-S?

    C9115AXI-S supports AIR-AP-BRACKET-1 as the low-profile option or AIR-AP-BRACKET-2 as the universal bracket. The mounting surface and ceiling-clip requirement determine which installation hardware is appropriate.
  • When does country approval rule out C9115AXI-S?

    C9115AXI-S is ruled out when the installation country does not map to the S regulatory domain. A different suffix must be selected through the same C9115AXI ordering family rather than treated as an equivalent SKU.

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