Cisco AIR-AP1121G-x-K9 Full English Product Description
1. Short Official Part & License Label
AIR-AP1121G-x-K9: Cisco Aironet 1121G Autonomous Indoor Wireless Access Point, Single-Band 2.4 GHz 802.11g / 802.11b, Runs Cisco IOS Autonomous Firmware, Integrated 2.2 dBi Diversity Dipole Antennas, 10/100BASE-T Ethernet, Supports PoE 802.3af or Local DC Power, Enterprise WLAN Security Suite, End-of-Sale Legacy Autonomous Access Point.
(The suffix "x" denotes regulatory domain: A=USA, E=Europe, K=Korea etc.)
2. Full Product Overview
The Cisco AIR-AP1121G-x-K9 belongs to the Aironet 1100 Series, a legacy single-band indoor autonomous wireless access point designed for small-to-medium enterprise office wireless deployments. Operating as a standalone autonomous AP running Cisco IOS software, it doesnotrequire a wireless LAN controller by default. Optionally, it can be converted via software image upgrade to lightweight CAPWAP mode (AIR-LAP1121G-x-K9 variant) for operation with Cisco AireOS WLCs.
It incorporates a single 2.4 GHz radio supporting IEEE 802.11g (up to 54 Mbps OFDM) with full backward compatibility for 802.11b DSSS clients. Integrated diversity dipole antennas optimize RF coverage inside offices, retail spaces and branch locations. The platform supports standard Power over Ethernet (802.3af) to eliminate separate power adapters, simplifying ceiling and wall mounting deployments.
This access point delivers enterprise-grade wireless security, multi-SSID segmentation, QoS, and basic wireless mobility. It integrates seamlessly into existing Catalyst switched networks as a wireless overlay.
Lifecycle Status: AIR-AP1121G-x-K9 reached End-of-Sale (EoS) and End-of-Support (EoS). Supported autonomous IOS releases are frozen; no new feature development. Successor models include 1130AG, 1240AG and modern Catalyst Wi-Fi 6 access points.
Key Differentiator vs AIR-LAP1121G-x-K9: AIR-AP1121G ships with autonomous IOS firmware for standalone operation; AIR-LAP1121G is factory lightweight CAPWAP mode requiring a wireless controller. It is single-band 2.4GHz only, unlike dual-band 1130AG series.
3. Complete Hardware Physical & Interface Specifications
Form Factor & Mechanical
-
Form Factor: Compact indoor wall/ceiling mount plastic enclosure
-
Dimensions: 205 mm × 104 mm × 38 mm (8.1” × 4.1” × 1.5”)
-
Unit Weight: 0.32 kg (10.5 oz)
-
Mounting: Standard keyhole slots for ceiling tile rail or wall bracket mounting
Rear Panel Interface Layout
-
1× RJ45 10/100BASE-T Ethernet port, supports 802.3af PoE input
-
DC power barrel jack (33–57 VDC, optional external power supply)
-
Reset pushbutton for factory default restoration
Top Panel LED Indicators
-
Ethernet: Link and traffic activity
-
Status: Operational health and client association status
-
Radio: Wireless transmit/receive activity
Power & Environmental Parameters
-
Power Options: IEEE 802.3af PoE or external 48VDC power injector
-
Typical power consumption: 10 W
-
Operating Temperature: 0°C to 40°C (32°F to 104°F)
-
Storage Temperature: -20°C to 65°C (-4°F to 149°F)
-
Humidity: 10%–90% non-condensing relative humidity
-
Regulatory Certifications: UL 60950, CE, FCC Class B, Wi-Fi Alliance certified
Radio Hardware Specifications
-
Frequency Band: 2.402–2.484 GHz (varies by regulatory domain suffix)
-
Supported Standards: IEEE 802.11g (OFDM), IEEE 802.11b (DSSS)
-
Data Rates: 54, 48, 36, 24, 18, 12, 9, 6 Mbps (802.11g); 11, 5.5, 2, 1 Mbps (802.11b)
-
Transmit Power: Software configurable, maximum 100 mW (regulated by domain)
-
Antennas: Built-in dual 2.2 dBi diversity dipole antennas (non-removable)
-
Max simultaneous SSIDs: Up to 16 BSSIDs
4. Core Autonomous IOS WLAN Feature Suite
1. Wireless Connectivity & RF Management
Adjustable transmit power, dynamic rate shifting, antenna diversity, beacon interval configuration, DTIM control, 802.11g protection mode for mixed b/g client environments.
2. Multi-SSID Virtual WLAN Segmentation
Multiple independent SSIDs, separate VLAN tagging per SSID, closed network mode, SSID broadcast enable/disable.
3. Comprehensive Enterprise Security
-
Encryption: WEP 40/128-bit, WPA, WPA2 (AES/TKIP)
-
Authentication: Open, Shared Key, 802.1X, LEAP, PEAP, EAP-TLS
-
Security features: MAC address filtering, SSID isolation, rogue AP detection, broadcast key rotation
4. Voice & Video QoS
Wi-Fi Multimedia (WMM) traffic prioritization, 802.1D CoS mapping, traffic classification for voice over Wi-Fi deployments.
5. Mobility Features
Wireless Domain Services (WDS) for inter-AP layer 2 roaming, proxy Mobile IP support.
6. Management & Diagnostics
-
Administration: Embedded HTML web GUI, IOS CLI via Telnet/SSH
-
Monitoring: SNMPv2, syslog, client association table, radio statistics
-
Firmware upgrade via TFTP
7. High Availability Operations
Configurable fallback parameters, watchdog monitoring, automatic crash logging stored in onboard flash memory.
5. Typical Deployment Scenarios
-
Standalone autonomous 2.4GHz wireless coverage for small offices, retail stores and branch locations
-
Legacy non-controller enterprise wireless overlay networks
-
Supplemental 2.4 GHz coverage for IoT devices requiring older 802.11b/g connectivity
-
Lab environments for legacy Cisco autonomous IOS wireless configuration training
-
Legacy CUWN migration staging before upgrade to lightweight controller-managed architecture
6. Short Sales Listing Tagline
Cisco AIR-AP1121G-x-K9 Legacy Aironet 1121G Autonomous Indoor Access Point, Single-Band 2.4GHz 802.11b/g, Runs Cisco Autonomous IOS, Integrated 2.2 dBi Diversity Antennas, 10/100BASE-T with 802.3af PoE Support, Multi-SSID VLAN Tagging, WPA/WPA2 Enterprise Security, Standalone Operation or Convertible to Lightweight CAPWAP Mode, End-of-Sale Legacy 2.4GHz Enterprise Wireless Access Point
|
