ARLAN is a family of both proprietary non-802.11 and 802.11-compliant wireless networking technologies developed and marketed by Aironet Wireless Communications in the 1990s prior to Aironet's acquisition by Cisco Systems. Operating in the 900 MHz and 2.4 GHz ISM bands and offering a nominal 2.0 Mbit/s throughput, the non-802.11 DSSS products competed directly with NCR's WaveLAN technology. After acquisition, the ARLAN lineup was renamed to Cisco Aironet; the non-802.11 products were supported briefly then discontinued.
The ARLAN lineup consisted of several offerings:
| Realm | Type | Frequency | Channels | Modulation technique | Output power | Media access control | Security | Max data rate | Fallback rate | |
|---|---|---|---|---|---|---|---|---|---|---|
| US and Canada | 900 MHz | 902-928 MHz | 12 | DSSS/DQPSK | 450 mW | Modified CSMA/CA | 24-bit network ID | 860 kbit/s | 215 kbit/s | |
| Australia | 900 MHz | 915-928 MHz | 5 | DSSS/DQPSK | 450 mW | Modified CSMA/CA | 24-bit network ID | 215 kbit/s | 172 kbit/s | |
| US, Canada, Europe | 2.4 GHz | 2.400-2.4835 GHz | 5 | DSSS/DQPSK | 50 or 100 mW | Modified CSMA/CA | 24-bit network ID | 2 Mbit/s | 1 Mbit/s | |
| Japan | 2.4 GHz | 2.471-2.497 GHz | 1 | DSSS/DQPSK | 50 or 100 mW | Modified CSMA/CA | 24-bit network ID | 2 Mbit/s | 1 Mbit/s | |
| US - BR2040-EE only | 2.4 GHz | 2.400-2.4835 GHz | 5 | DSSS/DQPSK | 100 mW (4 W EIRP max) | Modified CSMA/CA | 24-bit network ID | 8 Mbit/s (2 pairs of non-interfering bridge frequency pairs) | 1 Mbit/s |