Spec Sheet

Power Saving for Client Devices
The Power Save Protocol (PSP) polling feature enables devices
to maximize battery life and maintain application performance.
The implementation allows devices to conserve power between
wireless transmissions and also ensures that packets are stored
and reliably delivered when the device awakens.
Virtual AP Enables True Virtual Wireless LANS
Virtual AP enables the wireless LAN to be segmented into true
multiple broadcast domains—the wireless equivalent of
Ethernet VLANs—providing the ability to map multiple
ESSIDs (Extended Service Set Identifiers) to multiple
BSSIDs (Basic Service Set Identifiers).
Virtual AP provides complete control over broadcast traffic.
Control of broadcast traffic, including network level messages,
is extremely important because of its potential negative effect
on performance. Intelligent control of broadcast forwarding
through proxy ARP and other mechanisms ensures that only
the intended recipients receive broadcast traffic. The resulting
reduction in traffic maximizes bandwidth and network
throughput; device battery life and overall performance are
improved with the elimination of the processing of messages
intended for other recipients; and the possible compromise in
confidentiality and security of messages is eliminated since
broadcast messages can no longer reach the wrong recipients.
Load Balancing and Pre-emptive Roaming
Normal roaming does not occur until the device connection
has reached a minimum connection speed of 1 Mbps—normally
well beyond the boundaries of a cell and approximately halfway
through an adjacent cell. Two features, client load balancing
and pre-emptive roaming, work hand-in-hand to ensure that
devices roam before the connection quality erodes, providing
users with more consistent connection speeds for smooth
application performance. The WS 2000 provides the information
needed for roaming decisions, ensuring that critical wireless
connections—such as real-time voice and data connections—
are maintained.
4 9
Extensive WLAN Functionality
The comprehensive feature set of the WS 2000 provides full
control over wireless LAN traffic to provide peak performance.
Extensive wireless LAN functionality enables you to maximize
bandwidth and throughput, secure network traffic, prioritize
voice traffic, conserve power on mobile devices, and provide
dependable connection speeds for users in challenging
wireless environments.
Scalable Radio Architecture
Each WS 2000 supports up to six single or dual-band Access
Port radios (802.11b and 802.11abg) in the 2.4 and 5 GHz
frequencies—offering the broadest radio technology support in
the industry. The WS 2000 supports a total of four wireless LANs.
Access Ports: Next-Generation Wireless Access Devices
Access Ports bring a new level of simplicity to wireless
network implementation and management, as well as an
unprecedented upgrade capability. Access Ports are easily upgraded
with new features and functionality via the WS 2000, providing
excellent investment protection. A wide range of 802.11a,
802.11b and 802.11g external antenna options enables the design
of coverage patterns for the most challenging environments.
Each Access Port/radio supports up to four wireless LANs.
The Access Port AP300 supports simultaneous 802.11bg and
802.11a operations and aids in high bandwidth applications.
Support for Dynamic Frequency Selection (DFS) and Transmit
Power Control (TPC) is included with the AP300 for regulatory
compliance and radar detection and avoidance. Both the
802.11bg and 802.11a radios support four BSSIDs (which are
mapped to four ESSIDs).
Voice Prioritization
The WS 2000 provides voice prioritization capabilities for
devices such as VoIP phones, guaranteeing priority for voice
traffic during periods of network congestion.
Network Address Translation (NAT) with Application
Layer Gateway (ALG)
With NAT, the IP addresses of client devices in the internal
network are invisible to the external world. Identity is
protected, while the client devices connect to the Internet
through the WS 2000 as if directly on the Internet. The
WS 2000 supports three different NAT configurations:
䊳
One-to-One—A pool of available public IP address can
be used to map to an individual (internal) client IP address.
One-to-one NAT translates the IP address on behalf of
the client.
䊳
Many-to-One—The IP addresses for a group of mobile
clients in the internal network can be mapped to a group
with a single public IP address. The WS 2000 allows
the range of IP addresses in each of the three subnets to be
mapped to the same (or different) public IP address.
䊳
Port Forwarding—This inbound network policy allows
communication from the public network to a computer
on the internal network via a specified port. Essentially,
this allows the creation of a tunnel through the firewall,
between the computer on the LAN and the Internet.
This is useful, for example, to run a Web Server (Port 80)
or FTP Server (Port 23) using a single IP address. The
WS 2000 also allows the port translation and forwarding
of all unspecified ports to a specific IP address on the
internal network.
Application Layer Gateways (ALGs) enable applications
that embed addressing information in the payload (such
as FTP, Quicktime, Real Networks, Net2Phone and
Netmeeting), and protocols (such as PPTP, L2TP, IKE
and IPSec) to work when NAT is enabled. ALGs for over
40 different applications and protocols are supported.
WAN Connectivity
The integrated uplink 10/100 Ethernet Port enables the
WS 2000 to connect to a WAN access device (such as
a DSL or Cable modem, or Frame Relay Access Device),
enabling client devices to share Internet connectivity.
In addition, the WS 2000 provides support for industry-standard
PPP (Point-to-point) and PPPoE (PPP over Ethernet)
protocols. The PPPoE protocol enables multiple LAN users to
connect to the Internet through a single DSL modem.
Ease of Management
The WS 2000 is easy to configure, and even easier to manage. The
configuration of any WS 2000 can be easily replicated for fast and
simple deployment of additional WS 2000 Wireless Switches. The
configuration file can be exported to a text file and directly
imported into the WS 2000, or published to a remote FTP or TFTP
server that is accessible to your WS 2000 Wireless Switches. Firmware
can be easily updated as well, either via FTP or TFTP servers.
Support for different interfaces is provided to ensure a
maximum flexibility in configuring and managing the
WS 2000:
䊳
Command Line Interface (CLI)—Designed with
well-known industry semantics and provides
complete baseline management through the Telnet
or Serial interfaces.
䊳
Web-based Management—Provides anytime-anywhere
management with an intuitive, web-based (Java) GUI
that supports step-by-step, easy configuration of all
the system features.
䊳
Simple Network Management Protocol (SNMP)—The
SNMP implementation in the WS 2000 provides support
for commands for updating configuration and firmware
files and allows for remote monitoring of system health
and key RF parameters. Supported MIBs include:
• MIB II (RFC 1213)
• Ping and Traceroute MIB (RFC 2925)
• Symbol MIB (802.11 related)
The WS 2000 provides several key RF statistics that help in
real-time monitoring of the network health. These statistics
(such as throughput, percentage of retries, average signal strength
and SNRs on per MU, Access Port, and Switch basis) are
updated frequently and available via all supported interfaces
(CLI, Web, SNMP). Key system traps are also supported. Traps
can be configured when any of the key system performance
parameters fall outside the user configured bounds. The traps
can be forwarded to any enterprise management system and
provide early notification of network problems related to Access
Port adoption, Mobile Unit association and system resets.