User's Manual Part 1

6 Introduction to the Extricom Wireless LAN System


 IEEE 802.11i support
Extricom’s products support WEP-64, WEP-128, WPA-TKIP, WPA2-AES (CCMP)
encryption. The authentication modes supported include: RADIUS (802.1x) and WPA
Pre-Shared Key (PSK).


 Power save
Full power conservation management is enabled for associated mobile devices over unicast,
multicast, and broadcast frames. For multicast and broadcast frames, the DTIM (Delivery
Traffic Indicator Message) period is configurable.


 Centralized configuration
New switches are added to the network via a single Web interface either manually by the user,
or automatically using an Extricom protocol.


 System redundancy
Extricom enables full redundancy by connecting two switches in parallel to different APs over
the same area. The switchover parameters are user-configurable, and the Active to Standby
switchover is seamless to the user.


 SNMP
The Extricom system supports SNMP V2 based on standard and private MIBs, enabling the
user to configure the switch using SNMP Set operations, read switch status using SNMP Get
operation and determine the status of the system, including the status of APs and Redundancy
statuses using SNMP Traps.


 Rogue AP Detection
The Extricom system supports Rogue AP detection and reporting without the need for
additional hardware. By using one radio in each of the multi-radio APs, the Extricom Rogue AP
solution delivers the benefits of a dedicated security sensor network, without the costs of such a
physical overlay.


 Multiple RADIUS & RADIUS Redundancy
The Extricom system supports multiple RADIUS servers per ESSID, enabling the user to set
redundancy between these RADIUS servers.


 Network Time Protocol (NTP)
The Extricom system supports synchronization of the system clock over the network, thereby
ensuring accurate local time keeping with reference to radio and atomic clocks located on the
Intranet and/or Internet.


 Fast Handoff (Opportunistic Key Caching)
WLAN clients roaming between APs of the same channel blanket within a single switch’s
coverage area will experience Zero-latency mobility . Clients roaming between different
Extricom WLAN switches are subject to the 802.11i handoff mechanism. In addition to this, the
Extricom system speeds up 802.11i handoff between Extricom switches by use of Extricom’s
inter-switch protocol. This technique enables the client to avoid repetitive 802.1x
authentications, thereby enabling faster transition between Access Points connected to different
switches with minimal session interruption.